Category: Bolts

Absolutely Stunning Home Decor Pieces Made Up of Nuts and Bolts

With the Thanksgiving turkey and all the frills now rigidly behind us, it’s now time to linger over the next big holiday observance. While December at Yorkshire Park is going to be packed like sardines with colorful events to enliven your creativity and festive spirit, there are other places in the world, which would be hosting art form in a unique way this Christmas. You would have been decorating your house with the usual Christmas decorative items for years. This year, you can do something different.

Nuts Bolts Sculpture 1

How about going for some recycled nuts and bolts decorative items? While the seasonal decorative items are only meant for the month of December, the metallic items can permanently take a place in your house. While they not only give a funky look to your decor, but can make your house stand out in the neighborhood. Doesn’t it sound bit weird – decorative items made from scrap metals and bolts? Well, it’s interestingly true. It’s a well-known factor that creativity can come in any form. It is not necessary that it should be hand-crafted or machine made, it can dumbfound you nevertheless.

Nuts Bolts Sculpture

You can even create splendid designs out of scrap metals, nuts, bolts, hinges, forks and locks. Portland-based amazing sculptor and welding artist Brian Mock has given life to his metallic creations. He effortlessly tunes the metal pieces into life-like cocks, dogs and even genuine replicas of double-neck Gibson electric guitars. His creativity is quite discrete, ranging from fancy to functional.

Brain explains his work in his own words:

“I am intrigued by the challenge of creating an entirely unique piece from an eclectic collection of discarded objects. Giving these old, common items a new and extraordinary life as one sculpture is an artistically challenging yet gratifying process.”

Nuts Bolts Sculpture  2

Brian at his workshop
Now you would have got an idea about the multifarious uses of such hardware supplies. Gone are the days, when fasteners like screws, nuts and bolts were bought only for fastening objects or for any manufacturing industries. These days, even artists like Brian are seen shopping fasteners, so that they can seamlessly club them to create a splendid sculpture, as you can see in the image.

These days, the hardware supply companies are not only selling their products to the manufacturing companies, but now artists and sculptures have also become their esteemed clients. Earlier, only manufacturers used to purchase fasteners in bulk amounts, but now these metal pieces are now bought in huge amounts, only to be used for conceiving such wonderful home decors.

This Christmas, you can think bit unique and can bring home such decorative metal pieces to enhance the look of your house. You do not mind spending huge bucks in shopping delicate home décor pieces, which are made up of porcelain and ceramic. But you can get these pieces at quite affordable prices, plus such types of show pieces are durable enough to become a permanent home décor item in your home.

You can even volunteer to flaunt your skills by trying out our hand in creating such kind of metallic creation. All you need is to go online and shop some quantity of nuts, bolts and other fasteners, which you think can be of help. And then under the guidance of an online video, you can start creating your own studio.

Few Tips Help Buy Accurate Metric Tap Bolts

Machines as well as components, which are joined with screws and bolts, feature distinct torque specifications. Fasteners, such as metric tap bolts, are manufactured specifically to go through a nut/hole, which is pre-tapped to create a mating thread for that fastener. These rivets are designed to be conveniently used by any pneumatic tools or a wrench.

Metric Tap Bolt

How to identify metric tap bolts

People looking for these types of bolts may easily get confused with the American bolts. They are quite different in the measuring technique. While American bolts use the number of threads/inch as a measurement, the metric bolts use the distance between the threads.

Metric Bolts marked with Numbers to Indicate their Relative strength

These bolts are normally measured in millimeters as the standard reporting unit.

How to measure

The shank diameter of this bolt should be measured first, which is the distance from one side of the bolt to the other through the center

Metric grade to SAE grade Comparison

The number of threads should now be counted. Now the distance should be divided by the number of threads. For instance, if 10 threads make one centimeter, the thread length should be of 1 mm

The length of the bolt should be measured i.e. from the start of the head to the end of the bolt

Metric tap Bolt and Nut Technical Specifications

Now note the reading as such – diameter x distance between threads x length. For e.g. if a bolt has diameter of 2 cm, 1 mm between the threads and length of 25 mm then it would read as  “2x1x25”

Torque Specifications

Like other fasteners, the metric tap bolts are also enabled with torque specifications. The torque refers to the total amount of force, which is required to turn the nut and bolt around a fixed point.

Internal and External Thread Graph of Metric tap Bolt

In the metric system, bolts are usually expressed as per their diameter, the distance between their threads. For e.g. a fastener with a size of 12×1.75×30 suggests that the fastener is 12 mm in diameter with a length of 30 mm and 1.75 mm of distance between the threads.

In the metric nuts, these bolts are categorized under various grades. However, the metric nuts do not have any identification marks and are rather listed by thread spacing and diameter.

Different Heads and Sizes of Metric tap Bolts

Low Grade Specification

A low grade 6 mm metric tap bolt features maximum torque values ranging between 3 to 5 foot-pounds. Similarly, a 8 mm bolt will feature torque ranging between 8 and 12 foot-pounds. And a 10 mm metric bolts will feature torque between 15 and 22 foot-pounds.

8.8 Grade mark Metric Hex Bolt

8.8 Grade Specification

A 14 mm metric tap bolt with a grade of 8.8 will require 101 foot-pounds of torque. A 16 mm of bolt will require 146 foot-pounds of torque. An 18 mm bolt requires 201 foot-pounds of torque and a 20 mm bolt requires 285 foot-pounds of torque.

Typical ISO bolt and nut Markings

FYI: The bolt torques are flexible and depends heavily on the lubrication of the bolt. The above mentioned specifications are for dry and unlubed metric bolts.

Dimensions of metric tap bolts


The shank or the threaded portion of the bolt is defined by the size. The shank’s diameter is usually used as the primary measurement. the length of the shank varies greatly with the width. Those two measurements are determined by suppliers like Mutual screw, to help customers identify the metric tap bolts.

Internal and external thread graph and specifications of Metric bolts

An M10x20 metric bolt is enabled with a 10 mm shank which is 20 cm long.


The diameter between the flat sections of the head is always 1.8 times more than the diameter of the shank. An M10 metric bolt with a 10 mm of shank will have a 16 mm of hex head. the shank size can be calculated by measuring the head’s dimension and dividing it by 1.8.

Specification Requirements of Metric Tap Bolts

How to buy metric tap bolts

These bolts are usually sold based on their length, width, thread size and diameter. Some of these rivets are also labeled as per their strength. In our store, these items are sold as per their size and coarse thread.

Before purchasing these rivets, always make sure your measurements are in metric units.

Mutualscrews Metric tap bolt

Few tips to help buy accurate bolts

#Always determine the diameter of the product, you’re willing to buy for your requirement

#The thread distance is the second factor to be considered

Various Sizes of Metric Tap Bolts

#After you’re done with diameter and the thread distance, it’s now time to look for the accurate length, your job requires.

Features and Types of Black Carriage Bolts

Black carriage bolts are mainly used in fixing two wooden pieces and these are also known as plow bolts. These types of fasteners feature a domed head followed by a square base right beneath the top. These square necks prevent the fastener from spinning when the nut is applied. These are also available with ribbed neck.

Black Carriage Bolts

These fasteners, along-with timber bolts feature no drive and machine threads, which are used for a nut. Instead they feature a rivet, flaunting a square shoulder beneath their domed top, which withstands the spinning when the nut is fastened.

These metal pieces are used in deck construction and also in other outdoor furniture manufacturing projects. We, at Mutual Screw and Supply are indulged in providing a wide range of black carriage bolts, which are again available in various models and specifications. These items are manufactured using high standard quality material and are highly durable and sturdy by nature. Our range of fasteners is ideal for usage in automobile, engineering and allied industries.

The square neck of such bolt is inserted into the wood as the nut is fastened, thereby ensuring a very secured fitting. These metal rivets are available in various diameters and the most commonly used appliances in wood manufacturing industries. These are made up of different materials and are available in various grades of steel, thereby matching various industrial applications.

The square neck of such bolt is inserted into the wood as the nut is fastened, thereby ensuring a very secured fitting. These metal rivets are available in various diameters and the most commonly used appliances in wood manufacturing industries. These are made up of different materials and are available in various grades of steel, thereby matching various industrial applications.

Some of the most commonly used carriage bolts are described below:

Steel black oxide and oil carriage fasteners – These are medium sized carbon oxidized bolts used in heavy duty automotive processing.

Zinc plated types – These moderate rivets are specially used to prevent rusting.

Stainless steel black 18-8 bolts – These are ideal for marine applications and exterior usage and are therefore manufactured from a specific alloy of steel, which features a high corrosion resistance.

The black carriage bolts are thus available in various categories, flaunting distinct specifications.