The Mutual Screw Mantra


Mutual Screw holds hundreds of industries together
year after year through fair and foul weather.
Started in Manhattan in 1947,
eight decades later we’re a national hardware heaven!

Full service delivery right to the door
of your lumberyard, job site or hardware store.
A distributor and supplier of all major brands,
our products are made in America, not in Japan.

No complicated accounting or billing,
we’ll take care of it all if you’re willing
to stop buying from every supplier under the sun
because when it comes to hardware, you only need one.

We’re much more than screws, bolts and drill bits,
anchors, fasteners and ravishing rivets
stocked in stainless steel, bronze and brass,
the best of the present, future and past –

we also carry abrasives, brushes and dies,
we’re true one stop shopping for painting supplies.
In terms of metal masonry,
none compete with our deals
on filing, grinding and sharpening stones,
sanding belts and buffing wheels.

If you’re looking for lubricants for automotive parts,
Mutual Screw is the place to start.
From air conditioning accessories to diagnostic devices,
we stock so much, no one can compete with our prices!

We’ve got janitor carts for buckets and mops,
cleaners and disinfectants with spray bottle tops,
hand towel dispensers, buckets and brooms,
trash bags and trash cans for every room.
Our products are green, so they don’t hurt the earth,
protecting the environment improves everyone’s net worth.

Whenever handling hazardous equipment,
you need gloves that are chemical-and-cut-resistant.
Our gloves are made of neoprene, Kevlar and leather,
they’re even insulated for cold winter weather.
We’ve got gloves for welding, gloves for chores,
terry cloth electric liners and much much more.

Your personal safety is our utmost concern,
which is why we have kits for emergencies like burns,
and hard hats, safety signs, contaminant detectors,
dust masks, safety mats, hearing and eye protectors.

Mutual Screw has got more than you might think:
tools for tubs, faucets and sinks,
circular saw blades, concave milling cutters,
reamers and router bits like no other.

We’ve just scratched the surface of our inventory;
on our website, you can view its entire glory.
We aim for excellence at everything we do
to please our customers old and new
because whenever you choose Mutual Screw,
it’s beneficial to us and beneficial to you.

A Brief Introduction to the Hilti Screws

Hilti screws are now-a-days, one of the most searched hardware items in the Internet. The Hilti Company is one of the leading fastener manufacturers in the world and their products are counted among the top-selling hardware supplies in the world market.

Hilti screws Company

They have proved to be a great support for the international construction industry through their cutting-edge technology and high-end quality. Their products as well as their services enable the construction industry and even hardware industries with creative solutions and advanced benefits. Their head office is located at Schaan in the Principality of Liechtenstein.

They are active in more than 120 countries and their strength is up to 22,000, featuring skilled and proficient employees.

Hilti screw Kit and a Drilling Machine

The Hilti Corporation or the Hilti Group manufactures and markets the fasteners and all sorts of related machines, such as the anchoring systems, drilling machine, screw fastening systems etc. The company’s products, which are already a hit among the construction world, these are even highly opted by the hardware and wooden manufacturing companies as well.

The company focuses mostly upon its anchoring systems, various kinds of screws and bolts, hammer drills, installation systems and fire stops, but their buck does not just stop here. Their extended best-selling products also include tools, such as laser levels, electric drills, power saws, heavy angle drills and much more in the list.

However, this company is more popular because of its Hilti screws, which are available in almost all ranges and sizes, suiting almost every field and industry.

Some of its best-selling fasteners are mentioned below. Continue reading!

Sheet Metal Ductwork Screws

The S-MS HVAC zip screws are a combination of sharp as well as self-drilling screws. They are tailor made to attach sheet metal pieces, ranging from 18 to 28 gauges. They adopt the Hyper Thread technology to deliver the off-angle fastening capability, even in heavy-duty gauge sheet metal. These are also capable of being driven up to 30 degrees.

This advanced technology offers a tapered point and a shank for continuous driving with almost no metal filings. According to the Hilti Group, this specialized off-angle fastening quality in gauges ranging from 18 to 28 cuts off the installation time at much ease, while those enabled with high-profile heads and limited metal filings increase safety.

These specialized screws are made up of carbon steel along-with zinc electroplating and are available in two sizes. While the #10 S-MS is used for applications falling between 18 and 26 gauge and are driven with a 5/16-inch drive, the other type, the #8 S-MS is used for applications falling between 20 and 28 gauge and are driven with a 1/4-inch drive.

Hilti Sheet metal ductwork screws

Sheet Metal Zip Screws

The S-MS HVAC zip screws also adopt the above mentioned technology to produce off-angle tightening, even in heavy-gauge sheet metal. This applied technology enables these screws with a tapered end and shank for consistent driving without metal filings.

They help join metal sheets up to two layers of 18-gauge and the heads of such fasteners help reduce any stress from base material supplanting. These are specially designed to fasten sheet metal ranging between 18 and 28 gauge, plus these are self-piercing and can be easily driven even at 30 degrees.

Types and Benefits of Twinfast Screws

Whenever it comes to fixing two objects or fastening something we always look for a screw, which is the most essential product in the world of hardware supplies. The Phillips Truss Zinc Twinfast Screws are usually used with studs. These are the most commonly used metal pieces, be it in factories or homes. We usually need them on frequent basis.

When it comes to domestic use, we can even manage with nailing or gluing, which are easy, quicker and even require less effort, but both of these methods leave behind a permanent joint, which cannot be easily dismantled. Moreover, none of these techniques are going to render durability and strength. Therefore, the screw is the winner, which not only sustains durability, but can be easily removed whenever required.

Twinfast WoodscrewNow choosing the right type of fastener is necessary. You should select depending upon the type of your job. However, it can be bit complicated, as there is a huge variation, when it comes to materials, sizes, head styles, plated finishes and thread types. And if you’re thinking of going for a popular online store say Mutual Screw then twinfast screws are available in wide ranges. So you need to decide as per your basic requirements and then should go for a particular model. Buy Twinfast Screws from the main website.

These metal objects are available in two common head slot styles; the cross head style and the traditional slotted head style. However, in market three cross head style screws are available, which can be quite confusing to identify. The Phillips Truss Head Zinc Plated one is in much demand these days, which are usually available in 8 X 2-1/2 sizes. You can fetch them online at only $57.13 for 500 pieces. The Philips screws are mostly used on machines and self-tapping and are fitted to objects manufactured on the Continent and in the Far East.

Such kinds of fasteners are specifically designed for light gauge metal studs and wooden studs. If you do an online research, you’ll come across numerous websites, dealing with twinfast screws. However there are some web stores, which purely sell on bulk amounts, mostly to various manufacturers.

All You Wanted to Know About Finish Nuts

Finish nuts are usually hexagonal nuts, having six sides, as this kind of shape is the easiest to grasp. These nuts are small threaded metallic blocks and mainly help in securing bolts. These nuts along-with bolts fasten machine parts for assembly in step by step fashion.

These are also known as “hex nuts” because of their hexagonal-shaped heads.


The hex finished nuts are available in ASTM A563-A grade and are compatible with low carbon steel bolts, including SAE grade 2, ASTM A307, ASTM F1554 grade 36 and AASHTO M183. Besides, these rivets are also available in SAE grade 5 and grade 8 nuts in a finished pattern.

Dimensions of Hex finish nut

The sides of these nuts help in easily attaching to pliers and wrenches, so as to grip the nut and apply the required torque to it. Some of these metal pieces are hot-dip galvanized and thus add 2.2 to 5 mils of thickness to the threaded portion of a fastener.

The galvanized finished nuts are tapped flabby to adjust with the corrosion-resistant coating characteristic on the bolts.

Dimensions of Galvanized finished nuts


The Besson factory was the first to manufacture these nuts in 1568. In those days, these nuts were mostly used to festoon sleighs and carriages. Later in 1770, handmade wing nuts were created in North America for the same purpose.

Besson Factory

In the year 1818, Micah Rugg of Southington Township, Connecticut, designed the first nut and bolt manufacturing machine in North America, thereby paving the path for broader production of these fasteners.


Although the nuts and bolts industry witnessed better advancements, but the use of these finish nuts are still in extensive use. No other nut can beats its usability and sheer versatility.


The hex finish nuts are usually made from steel, which has been specially designed with the help of a steel cutting machine. The entire manufacturing process is relatively fast, and thousands of nuts can be produced within a matter of minutes.

These days, nuts are available in steel, stainless steel, grade 5 black oxide, aluminum alloy, grade 2 zinc plated, grade 5 zinc yellow, brass, nylon patch, L9 Cad yellow, metric hex, silicon bronze, MS51971 Hex Nuts (Coarse Thread), MS51971 Hex Nuts (Coarse Thread) etc.

However, steel hexagonal nuts are used more than any other frequently used type.

Models and Sizes of Steel Hexagonal Nuts

The hex finished nuts are generally coated with a rust-proof material, so to prevent it from rusting. Nuts, which are rust-proofed, can be used for both indoor and outdoor purposes.


#Grade 2

Grade 2 Finish Nut

The Grade 2 type finish nut is a hexagonal shaped threaded fastener, with thickness of 0.875 D, where D is the normal nut size and a width of 1.5 D across the flats. These rivets are usually made up of low carbon steel. This is the most versatile and widely used design in the nut industry and can be used with any low carbon bolt, which is not heat-treated. The bolts should have a minimum tensile strength of 74,000 psi or less.

Diameter Graph of Grade 2 type finish Nut

Their composition includes the following:

  • Carbon: 0.47%
  • Phosphorus: 0.12%
  • Sulphur: 0.23%
  • Coarse thread: 90,000 psi
  • Fine thread: 80,000 psi

#Steel Hot-Dip Galvanized

Steel Hot Dip Galvanized finish nut

This kind of finished nut is also a 6-sided internally threaded fastener, with a thickness of 0.875 D, where D is the normal nut size and a width of 1.5 D across the flats. These are also made from low-carbon steel, featuring a  galvanic zinc coating.

These are used with low carbon bolts and screws, by applying a minimum tensile strength of 74,000 psi or less, so as prevent the fastener from moisture, salt and other such corrosive conditions.

Dimensions of Hot Dip Galvanized finish nuts

Their composition includes the following:

  • Carbon: 0.47%
  • Phosphorus: 0.12%
  • Sulphur: 0.23%
  • Rockwell B68 – C32
  • Coarse thread: 68,000 psi
  • Fine thread: 60,000 psi

#Stainless Steel, 18-8 & 316

Stainless Steel 18-8 & 316 finish nut

Such types of six-sided threaded fastener are hexagonal in shape, with thickness of 0.875 D, where D is the normal nut size and a width of 1.5 D across the flats and are made from austenitic alloys.

These rivets are used with stainless steel bolts and screws, by using a specified minimum tensile strength, which is either equal to or less than the specified stress of the mating nut.

Detailed Specification Chart of finished Hex nuts

Both types of stainless nuts are corrosion resistant, as they are made up of 316 stainless steel. Thus, they have greater resistance power as well as superior strength at raised temperatures.

Dimensions of all types of finished nuts

The composition of 18-8 stainless steel finish nuts include the following:

  • Austenitic alloys of 303, 303Se, 304, XM7
  • Chromium: 18%
  • Nickel: 8-10%
  • Rockwell B95 – C32

All You Wanted to Know about Metric Nyloc Nuts

A metric nyloc nut, which is also known as polymer insert lock nut, nylon insert lock nut or elastic stop nut, is a kind of fastener, which combines a nylon component and a nylon collar insert to efficiently padlock the rivet into accurate position on the bolt.

Metric nyloc Nuts



The insert is positioned at the end of the nut and its inner diameter is bit smaller than the entire diameter of the screw. The polymer insert spreads elastically over the threads of the screw without cutting the threads into the nylon. Moreover, it clamps the nut in two ways. Firstly, it pushes the end part of the screw threads against the head of the nut threads, thereby enhancing the friction between the two. Secondly, the nylon component employs a compact force against the rivet itself.



The nylon component of the nyloc nut has a smaller inside diameter than the actual nut, thereby locking the fastener in place by gripping the nylon firmly around the bolt when fastened. Unlike a common locking washer, this particular metal piece stops the nut from loosening due to vibration, as the nylon is firmly wedged into the threads, thereby offering enough resistance to movement.

X section of a Lock Nut Bolt joint



One common issue associated with common nuts and bolts is that they can get loose over time due to the effect of the vibration. Therefore, you can go for chemical thread-locking melanges, which help in lessening the development of loosening these metal objects. However, this process is quite time-consuming and in case of difficult-to-reach areas, it’s nearly impossible to acquire desired results.

The metric nyloc nut on the other hand, enables a bolt to be fastened conveniently without fear of getting loose under any condition. Also, you won’t face any problem in employing this nut than a conventional non-locking nut.

However, always remember that these nuts cannot be threaded tightly only by using your fingers. Instead, you’ll require a suitable wrench to tightly secure them.


Did you know?

The metric nyloc nuts can maintain their locking ability even at 250°F (121 °C) and that ‘Nyloc’ is a registered trade name of Forest Fasteners.

In Australia it is a registered trade mark of Exafast Pty Ltd.


Bulk no of Metric Nylon nuts


Advanced Features

In the market, these nuts are sold at a bit higher price as compared to a standard nut. This higher range had once become a concern, as these locking rivets were used as a one-time use supply i.e. once such rivets were used on bolts then they had to be discarded and new pieces were used whenever the fastener was removed.

In order to overcome such issues, these nuts were then highly advanced in terms of nylon formula. Today, modern nylon-type locking nuts can be conveniently reused several times without any risk of failure, thereby enabling these fasteners a feasible option even in most critical fastening areas.


Things to keep in mind 

Although these round objects can be reused in several applications still it’s recommended to go for fresh nuts, especially in case of critical fastener connections. Even the slightest risk of failure can slap manufacturer with a ban with the usage of old locked nuts in all critical applications, including rod bolts, cylinder head bolts and bearing cap bolts. The advanced nylon formulas easily enable the nyloc nuts to be applied in various internal engine applications without concern.


Useful Tip

The World Wide Web is always a great medium to look for some potential metric bolt and nut providers. You can read testimonials online and can also search via local listings such as Google Places, Yahoo Local, Yelp etc. as these is a huge repository of reliable web stores, such as Mutual Screw on the net.



Types and Uses of Sheet Metal Screws

What is a sheet metal screw?

Sheet Metal Screws

A sheet metal screw is a kind of hardware supply, which is used for tightening metal objects. This kind of fastener features a threaded shank along-with a flat/rounded head.

Unlike wooden rivets, which are threaded only partially, the above mentioned screw’s shank is entirely threaded. The tip and the threads are quite sharp, thereby enabling them to easily get cut through the hard metal surface or any other type of surface.

Fine threaded Sheet Metal Screw


These types of fasteners are used to fasten one metal object with another and are also used to attach metal object with a wooden, plastic or any other kind of surface. These are usually represented by a series of 3 unique numbers, which explain the diameter, length and thread count of each screw. For instance, a fastener listed as 6-30 x 1″ explains that its diameter is of 8 and is 1 inch long and that it consists of 32 threads.

Diagrammatic View of fine Threaded Sheet Metal Screw

The diameter of such type of rivet is determined by referring a chart developed by the American National Standards Institute (ANSI), where a size of 8 may be similar to a number of various sizes depending on the type of screw.


Commonly there are two types of metal sheet screws available in the market. While standard units feature a pointed tip, which is ideal for cutting into the metal surface, the thread-cutting or self tapping screws feature a notched tip, which can easily cut into the metallic surface without pre-drilling. But pre-drilling is required for the standard types, featuring a pointed tip.

Different types of Sheet Metal Screws

The heads of such fasteners are available in several different types and are chosen, determining the type of the job requirement. The round/pan headed screws protrude above the surface after their installation. The flat or oval shaped fasteners sit smoothly on the top of an object, thereby reducing wind resistance and enhancing the application of the installation.

In addition to, these types of fasteners can have Phillips, square or flat slots, depending upon the type of the tool used for installation.

Type A Type z and Lf-tapping Sheet Metal Screws


The head plays a relevant role in applications of sheet metal screws. The shaft of these fasteners is threaded all the way up to the head, thereby allowing better retention to other materials.

Pan Head

Pan Head Sheet Metal screw

The pan head types feature either Phillips-head or slotted-head varieties. These type of rivets are characterized by their protruded head, raised above the surface of the material, which is supposed to be fastened. These types are available in zinc-plated, white-coated, black-coated and non-coated stainless steel.

Oval Head

Oval Head Sheet Metal Screw

The oval head types of sheet metal screws resemble the regular flat head screws, but have slight variation. These rivets feature more girdles on top, which help in providing a more finished appearance. These screws are also available in stainless steel and also in zinc-plated. their heads can be either Phillips-head or slotted head.

Flat Head

Flat Head Sheet Metal screw

Flat head screws, which feature both Phillips and slotted-head styles, are considered as the best countersunk for any kind of material. These are available in various coatings and finishes.


Self Drilling type Sheet Metal Screw

Self-drilling types are available in pan head and flat head designs. They are quite similar to the regular screws, except for the additional feature of a drill point at the tip. These can be screwed only by Phillips head screwdrivers and are made up of zinc-plated and stainless steel.

Hex Washer

Hex Washer type Sheet Metal Screw

Hex washer screws are another commonly used type of sheet metal screws. These rivets are enabled with a hexagonal head and a washer so as to secure the shaft. These come in zinc-plated and stainless steel. They are available in a standard self-drilling type and are sometimes enabled with an additional bonded neoprene washer.


Uses Of Sheet Metal screw

The sheet metal screws are used to connect two different pieces of metal. These rivets are also used for quick and strong fastening of metal to aluminium, plastics, hard rubber and even plywood.

Eye Bolts: Types and Usage

When you have got something to fix or any household task to do then you must be sure that you have got the appropriate tools. If your supply needs require an eye bolt then you should also be certain that you’ve fetched the right model. Here’s a quick breakdown. Do have a read!

If you’re doing a straight line pull then you’ll need a regular size of a lifting eye bolt. This would be in fact the anchor point so as to fasten a wire pipe and any appropriate geared apparatus, which is attached to the end point. The galvanized stainless steel object enables less corrosion on the bolt, which could have affected the vigor and durability of the metal object.

You should always look for an eye bolt that is made up of stainless steel and is welded from marine grade steel, so that it can easily withstand any kind of environs, be it harsh, wet or humid. The welding of the bolt enables it to be used as a heavy duty ballast point. However, if it’s used on commercial purpose then the manufacturer should always consider the working load limits.

If you are required to do any kind of angular lifting then you should always go for a shoulder eye bolt, so as to safely execute the task. The shoulder bolt is actually a ‘collar’ type present between the shank and the eye. This helps maintain the durability and strength of the bolts. When you are doing an angular lifting then always be sure to go through the user manual, regarding placement of the bolt, washers and threading for maximum output.

However, you can go for bolts, which are not welded, if you will be doing any lighter duty task. Such stainless steel eye bolts are usually made up of marine grade steel and is quite resistant. This is also cheaper anchor point and it’s mandatory to always go through the instruction manual before using this light-weighed object.

The regular bolts can always be tailored made as per the client’s requirement and suiting the environmental conditions of their jobs.

Different Types of Bolts

Different types of bolts are available online, so as to fit into various industry requirements. Following are the most commonly used types of bolts, used in various applications and sectors. Do have a look!

Countersunk Bolts parts definition

#Anchor Bolts

Anchor bolts are used to fasten various kinds of  objects or structures to concrete. These bolts are available in various designs, which suitably fit into almost every industry requirement. These types of rivets are enabled with a threaded end, to which a nut and washer are fastened for the external load.

Anchor Bolt

These fasteners are extensively used in all sorts of fields, ranging from nuclear power plants and standard buildings to dams and home renovations. They help in firmly fixing implanted plates to a concrete foundation, featuring a structural steel element.

One of the simplest forms is the cast-in-place anchor, which is the strongest type of fastener. It features a standard bolt with a hexagonal head, which is fixed in a wet concrete before it sets. It is used in heavy-duty machines mounted on poured concrete floors.

Cast in place Anchors


  • Rust-resistance
  • Sturdiness
  • High consistency

Other commonly used designs features a bent bolt along-with a hook at the end. Click here to know more about these bolts.

#Roof Bolts

A roof bolt usually comprises of a shaft for injection into a pre-drilled hole, mostly in a mine roof.

Schematic Diagram of Roof Bolt

The head of such bolts is counter-balanced with respect to the longitudinal axis of the shaft so that when the rivet is rotated by means of its head, the shaft creates a circle of greater diameter an offset between 0.08″ and 0.25″. Usually, the counterbalance should be between 0.10 and 0.16 inches.

This kind of method is implemented, so that at least 90% of the bolts produced so far have their head central axis equipoised with the longitudinal axis of the shaft by 0.08″.

Roof Bolt

A typical mechanical roofing bolt incorporates a 3-leaf mechanical expansion shell.

While installing, the expansion shell gets activated by employing torque over the nut end, thereby forcing the shell to expand and get engaged in the hole.

Anchor Bolt with a Threaded Rod


  • Enables a versatile system for rock reinforcements
  • Renders immediate support for installing 300 mm from the face
  • Easy installation and production time saving
  • Cost effective support method
  • Less prone to blast damage on the face
  • Easily gets along-with mechanical equipment

#Hex Socket Bolts

Hex Socket bolts

These are six-sided bolts, specially designed to meet various industry standards. The hex socket feature is shown in all SAE hex bolts, ASTM A307 grade A bolts. There are heavy hex socket bolts available in the market, which are required for A307 grade B, A325 and A490, requiring a hex pattern.

These are used in various applications, including wood, steel and construction supplies required for bridges, docks, buildings and highway structures. These rivets are also known as headed anchor bolts.

Dimensions of Hex Bolts


  • Standard: DIN912
  • Size: M6-M64
  • Material: carbon steel,stainless steel
  • Surface treatment: self color, zinc plated, H.D.G

#Elevator Bolts

Elevator Bolts

These bolts were introduced in mid-18th century. In those days, these were used to fasten the lift buckets with a belt, so that the grains could be lifted to be stored in the vertical grain cabinets of the lift. Today, these rivets are rather used in broad applications, which are altered to transporter systems.


Features of Elevator bolts

  • Material: General Carbon Steel, Carbon Steel with zinc plated, Stainless Steel
  • Intensity of Bolt :  Class 4-8
  • Model: Standard Bolt, Flat Countersunk Bolt, Fang Bolt (Tooth Bolt), Belt Bolt.
  • Standard: GB, ISO, ANSI, DIN, BSW, JIS
  • Dimension: M3-M22
  • Length: 10 mm-600 mm
  • Grade: 4.8, 6.8, 8.8, 10.9, 12.9

Visit here to know more about these bolts.


T Bolts

T-bolts enable a durable and convenient connection. These fasteners swivel into the required position, so that they can be easily fixed soon after a structure is assembled. These are used in building, instruments, automobiles, furniture etc. These rivets are available in aluminum, brass, carbon steel, stainless steel and copper. These are also available in zinc plate, black, chrome plate, HDG etc.

T Bolt Types


  • These can be installed anywhere along the profile’s T-slot and rotates into position
  • Their grooves “bite” into proile to lock the T-bolt into position, offering ESD
  • protection and resistance to vibration
  • Huge contact surface improves gripping of the str

Truss Head Machine Screw: Ideal for Electronic Items

The truss head machine screw is mostly used in electronic items extensively. You would have seen this kind of fastener on the Vanagon pop top.

Machine Screws

Such type of rivet is a combination of Phillips and Slot type and is designed in a way, so that it can easily go through a hole, which is pre-tapped to create a mating thread for the rivet. This is actually a customized fastener, which can be designed as per customer’s requirement.

Although the truss head screws cannot withstand weight as compared to pan or round heads, still they are used in areas where minimal clearance exists above the head. The adjusted screws enable little gap along-with an additional large bearing surface. Such rivets are mostly used to fix metal lathe with metal studs.

Apart from truss head, the machine screws are available in various types, suiting various industrial applications. These blunt-ended specially designed rivets can be easily inserted into a suitable nut as well as in a tapped hole.

A Truss Head Machine Screw

These metal pieces are also referred as bolts, although they can be easily identified as regular screws.

The different types of machine screws are as follows:

Phillip Flat and Slotted Flat Machine Screw

Such types of rivets are wimbled into the pre-tapped hole, thereby rendering a flush finish. The head of such rivets are cone shaped and are usually thin, as compared to round head types.

Slotted Round and Phillip Round Machine Screw

Such fasteners feature a domed head, which looks like just half of a sphere. This smooth domed head renders a great finish and is available in both Phillips and slotted drives.

Such screws require a flat screwdriver or bit to be unscrewed. And these can be easily fastened and loosened even in blind locations.

Phillip Oval and Slotted Oval Machine Screw

Such screws are wimbled without a complete flush finish and their head is also dome shaped but with a cone underneath. They also proved great finish both in Phillips as well as slotted drives and such types of fasteners work well for various applications in furniture, metal and other materials. These are available in stainless steel, brass, zinc plated steel etc.

Slotted Ovel machine Screws

Phillip Truss Head Machine Screw 

Such fasteners offer a unique wider head than other designs. The low profile of such fasteners is an added benefit for machinery. A Phillips screwdriver is used to fasten them, thereby making it more difficult to strip.

Slotted Hex Machine Screw

Such kinds of fasteners are available with different tips, including a thread cutting, blunt end and self-tapping tip. As the head of such fasteners is built with six flat sides, creating a hex shape, it can be easily tightened or loosened with a common wrench.

This fastener may or may not feature a washer, and they require a flat-headed or slot screwdriver for their fastening or removal.

Among all those rivets, the truss head machine screw is one of the most sought-after screws in the hardware industry.

Features and Uses of Plow Bolts

Plow bolts are special types of fasteners, which are used for creating mechanical bearings, which need a smooth surface where the bolt heads can efficiently pop out. These fasteners got their names, as they were explicitly used in manufacturing of plow in olden days. Today, their applications have broadened to other areas as well.

They are now used in heavy construction equipment, such as the road graders, snowplows and scoop shovels. These rivets are usually exposed to wear and tear conditions and therefore, it is always necessary to choose the right kind of bolt, best suiting your job. As we all know about the undying love between nuts and bolts, so how come a plow bolt can work without its nut.

Plow bolts, which are also known as carriage bolts are mostly used when the surface, where the bolt’s head protrudes needs to be smooth. Earlier, they were used for only in plows and hence, they got this name. These days, these are used in various applications.

A lot of heavy-duty supplies require the use of this kind of bolt. Snowplow is one such example, as its effective blade renders a smooth surface against the pavement to get rid of the snow. If the heads of the bolts are not flat, then they can gouge the ground and wear much quicker.

The bolt features a huge head on one end and a barrel-shaped shaft with an external thread at the other end. It’s a circular bar, thereby enabling the nut to be advanced during rotation procedure. The head of the rivet is countersunk along-with a square and short neck to save the object from turning around whenever the nut is fastened. The nut, on the other hand is hexagonal in shape, featuring a hole with an internal thread best suiting the thread of plow bolt.

These rivets are managed for tightening or losing by applying appropriate torque to the nuts. When a nut is rotated in a clockwise direction, it then advances along the thread of the bolts, thereby fixing the object in the surface. The mating surface efficiently sustains the force, which is being applied upon it. This powerful resistance helps prevent the mechanical connection from loosening over the time.

The head of such kind of rivet is mostly flat or features a slight dome shape, thereby ensuring a smooth surface necessary for the functioning of the fastener. Another primary feature of this metal object is that its head has a low profile and because the head is often flushed with the mating surface, it is more likely prone to damage.

The plow bolts are available in variety of metric as well as in standard sizes. The pattern and the size of such fasteners highly rely upon the type of the environment in which they are going to be used.

They are manufactured from stainless steel, carbon steel, and different metal alloys for high-wear resistance. The material used is often heat-treated or hardened to render improved wear resistance, thereby extending the useable life of the bolt.