square head machine bolt
Rax Industry square head machine bolt which is also called galvanized machine bolt is one kind of square head bolt, used on pole lines, overhead lines, or transmission lines. It is designed to fasten the steel cross arm or U channel onto the pole.
The usual diameter of the square head machine bolt is 3/8inch, 1/2inch, 5/8inch, and 3/4inch. The length of the square head machine bolt is according to the application. The widely used length is 2inch, 3inch, 10inch, 12inch, 14inch.
Rax Industry square head machine bolt is assembled with one square nut.
As a professional manufacturer, supplier, and exporter, Rax Industry can support all sizes of square head machine bolts, We can also customize them according to your designs.
If you would like to know the detailed square bolt dimensions, pls check the detail.
Machine bolt specifications:
According to the different way of galvanizing, the square head bolts galvanized is divided into hot-dip galvanized and electric galvanized.
Rax Industry square head machine bolt is hot-dip galvanized. The hot-dip galvanized square head machine bolts can keep a long time free from rusty.
The electric galvanized looks more smooth and bright on the surface, but the low ability to anti rusty.
The kinds of square head machine screws are metric, UNC, UNF. There is a chamfer at the end of the machine bolt. The square head machine bolts with chamfer will be easy to install.
Square Bolt Dimensions
1 /2 Inch Diameter
Minimum Tensile Strength: 35,000 Kg
| Catalog no. | Bolt Length inch(mm) | Thread Length Inch(mm) | Approximately Weight (Kg./1100 Pcs.) | Standard Pkg. Qty. 1 Carton |
| JY-A0112-1.5 | 1-1/2 (38) | 1-1/4 (32) | 7.70 | 250 |
| JY-A0112-02 | (50) | 1-3/4 (44) | 8.70 | 200 |
| JY-A0112-2.5 | 2-1/2 (63) | 2-1/4 (58) | 10.00 | 200 |
| JY-A0112-03 | (75) | 2-3/4 (69) | 11.00 | 200 |
| JY-A0112-04 | (100) | (75) | 13.00 | 200 |
| JY-A0112-05 | (125) | (75) | 15.00 | 200 |
| JY-A0112-06 | (150) | (75) | 17.00 | 100 |
| JY-A0112-08 | (200) | (100) | 21.00 | 100 |
| JY-A0112-10 | (250) | (100) | 25.00 | 100 |
| JY-A0112-12 | (300) | (150) | 29.00 | 100 |
| JY-A0112-14 | (350) | (150) | 33.00 | 75 |
| JY-A0112-16 | (400) | (150) | 37.00 | 75 |
| JY-A0112-18 | (450) | (150) | 41.00 | 80 |
5/8 Inch Diameter
Minimum Tensile Strength: 5,680 Kg.
| Catalog no. | Bolt Length inch(mm) | Thread Length Inch(mm) | Approximately Weight (Kg./1100 Pcs.) | Standard Pkg. Qty. 1 Carton |
| JY-A0158-05 | 5 (125) | (150) | 25.00 | 100 |
| JY-A0158-06 | (150) | (150) | 29.00 | 60 |
| JY-A0158-08 | (200) | (150) | 35.00 | 65 |
| JY-A0158-10 | (250) | (150) | 42.00 | 50 |
| JY-A0158-12 | (300) | (150) | 48.00 | 50 |
| JY-A0158-14 | (350) | (150) | 53.00 | 50 |
| JY-A0158-16 | (400) | (150) | 61.00 | 50 |
| JY-A0158-18 | (450) | (150) | 68.00 | 50 |
| JY-A0158-20 | (500) | (150) | 74.00 | 50 |
| JY-A0158-22 | (550) | (150) | 81.00 | 50 |
| JY-A0158-24 | (600) | (150) | 86.25 | 50 |
| JY-A0158-26 | (650) | (150) | 93.50 | 10/ bundle |
| JY-A0158-28 | (700) | (150) | 96.50 | 10/ bundle |
3/4 Inch Diameter
Minimum Tenslle Strength: 8,340 Kg.
| Catalog no. | Bolt Length inch(mm) | Thread Length Inch(mm) | Approximately Weight (Kg./1100 Pcs.) | Standard Pkg. Qty. / Carton |
| JY-A0134-08 | 8 (200) | 4 (100) | 51.00 | 51.00 |
| JY-A0134-10 | 10 (250) | 4 (100) | 61.00 | 61.00 |
| JY-A0134-12 | 12 (300) | 6 (150) | 71.00 | 71.00 |
| JY-A0134-14 | 14 (350) | 6 (150) | 80.00 | 80.00 |
| JY-A0134-16 | 16 (400; | 6 (150) | 90.00 | 90.00 |
| JY-A0134-18 | 18 (450) | 6 (150) | 100.00 | 100.00 |
| JY-A0134-20 | 20 (500) | 6 (150) | 110.00 | 110.00 |
| JY-A0134-22 | 22 (550) | 6 (150) | 116.00 | 116.00 |
| JY-A0134-24 | 24 (600) | 6 (150) | 122.00 | 122.00 |
| JY-A0134-26 | 26 (650) | 6 (150) | 128.00 | 128.00 |
7 /8 Inch Diameter
Minimum Tensile Strength: 11,550 Kg.
| Catalog no. | Bolt Length inch(mm) | Thread Length Inch(mm) | Approximately Weight (Kg./1100 Pcs.) | Standard Pkg. Qty. / Carton |
| JY-A0178-14 | 14 (350) | 6 (150) | 6 (150) | 25 |
| JY-A0178-16 | 16 (400) | 6 (150) | 6 (150) | 25 |
| JY-A0178-18 | 18(450) | 6 (150) | 6 (150) | 25 |
| JY-A0178-20 | 20(500) | 6 (150) | 6 (150) | 25 |
| JY-A0178-22 | 22(550) | 6 (150) | 6 (150) | 25 |
Dimension Measurement of Square Head Machine Bolt
Square Head Machine Bolt before Packing
Related Products
Square Head Machine Bolt Buying Guide
Machine bolts have come a very long way. Nowadays they come in different shapes and one of them is the square head machine bolt. Also, these bolts have a wide area of applications. Probably you interact with square head machine bolts on a daily basis.
Are you planning to buy square head machine bolts in China? Read through this article. We will guide you on everything that you need to know about square head machine bolts for sale.
- Chapter 1: What is a Square Head Machine Bolt?
- Chapter 2: Application of Square Head Machine Bolts
- Chapter 3: How square head machine bolts are used on pole Line?
- Chapter 4: Square Head Bolt Dimensions
- Chapter 5: Materials for Square Head Machine Bolt
- Chapter 6: Manufacturing Process Of Square Head Bolt
- Chapter 7: Surface Treatment of Square Head Bolt
- Chapter 8: Reliably square head machine bolt manufacturer
- Chapter 9: Conclusion
- Chapter 10: Frequently asked questions? (FAQs)
What is a Square Head Machine Bolt?
Simply defined, a square head machine bolt is a type of fastener that has a round threaded shank which is crowned by square.
As you can see, the name is derived from the shape of the head. You will also find a hex head machine bolt whose head is hexagonal. A round head bolt has a circular head
Square head screws go hand in hand with square head screwdrivers. No other type of screwdriver can be used on these screws.
Normally, square head bolts are supposed to be joined to different components that make up a power line.
A bolt can either be partially threaded or fully threaded. It all depends on where you are planning to use the bolt.
Application of Square Head Machine Bolts
Square head machine bolts have a wide range of applications in different industries.
You will find them in factories, farming, construction among many other industries.
Given that they are square-shaped, it is very easy to fix them in tight areas where other bolts will give you a hard time.
In the mechanical engineering arena, square head machine bolts and nuts are used for building and repairing different types of machines.
They enable engineers to make different joints, some of which are impossible to make with other bolts.
In the construction industry, galvanized square head bolts in conjunction with square head nuts are used for the restoration of houses. They are also used in adding different fixtures on the walls.
Square nuts and bolts are commonly used in the automotive industry. Different parts of a vehicle can be joined together using the square head fasteners.
The bolts are usually found on DIY furniture products. They allow you to join different components of furniture so that you end up with a complete piece of furniture.
How square head machine bolts are used on the pole line?
One of the most common applications of the square head machine bolt is in powerlines.
The bolts are used for completing connections between different components of a pole line transmission system.
The square head bolts are used to connect the conductor and the insulator onto the pole.
Square head machine bolts are also used for connecting anchor rods to the pole.
Since the anchor rods support the bolt to the ground, they need to be firmly attached to the pole in order to provide adequate support.
Square Head Bolt Dimensions
What is the ideal size of a square head machine bolt?
The bolts come in different dimensions and there are three main ways of denoting the dimensions of a bolt.
The dimensions are usually denoted in terms of diameter, length, and thread count.
-The Head diameter
This is the measurement across the flat surface of the head.
The diameter of the square head machine bolt is denoted in terms of inches.
Commonly used diameters are 3/8 inch, 5/8inch, and 3/4inch.
You should get the correct head diameter for your application.
The Head diameter
-Thread Count
This is the total number of threads on a square head machine bolt.
All the square head machine screws have specific thread counts.
Before buying square head bolts for sale, ensure that their thread count is in tandem with where you will use it.
Apart from the thread count, another metric that is used to measure threads is thread pitch.
This is the distance between individual threads.
It is usually expressed in terms of millimeters.
If the thread pitch of the square head carriage bolts is 1.5mm, it means that the distance between each thread is 1.5mm.
Thread Count
-Length of the square bolt
The length of a square bolt is denoted by the distance from the surface of the material to the extreme end of the fastener bolt.
For fasteners whose heads sit right surface, the length is measured right from the head to the end.
Length of the square bolt
The dimension is just one of the square head bolt specifications that you should be keen on.
Before you buy, get every information from the square bolt suppliers regarding the square head bolt dimensions.
Materials for Square Head Machine Bolt
It is quite obvious that you would like to know the type of materials that are used to manufacture square head lag screws and bolts.
Most of these bolts are made of carbon steel.
This material has quite a number of impressive properties that make it ideal for bolts.
Carbon steel is resistant to corrosion and can sustain immense physical pressure during the installation process.
Carbon steel is also durable especially when we compare it with other metals.
Manufacturing Process Of Square Head Bolt
The main process in making the square head machine bolt is hot forged.
The main raw material in making the square head machine bolt is steel rod. It’s rare for Rax Industry to make stainless steel machine bolt.
After the steel rod raw materials were inspected by the QC team, the long steel rod will be cut into the little right size.
One side of the square head machine bolt will be heated by the high frequency furnace.
When the black color steel rod turns into red. The red part steel rod will be put into the molding machine. After the steel rod was taken out from the molding machine, the square head formed.
The next step is to make the chamfer at the end of the square head machine bolt. Then the half-finished square head machine bolts go through the thread rolling machine.
The final step is to be dipped into the compounded hot liquid. When finished making the square head machine bolt, the workers will pack them into cartons or woven bags to wait to load into containers.
Square Head Bolt Coatings
In addition to the materials, square bolts have different coatings.
The purpose of the coatings is to enhance the looks of the bolts while at the same time providing some levels of protection.
The most common coatings for the galvanized machine bolts include zinc plating, chrome, and hot dip galvanizing.
Rax Industry: Reliably square head machine bolt manufacturer
Rax Industry accepts OEM or ODM manufacturing. Rax Industry will press the customers’ logo on the head of the square bolt.
Rax Industry does every step very carefully and experienced. All the size of the raw material is standard, without a lower standard. Before sending it to do the galvanized, the workers will select the distorted out. In this way, all the square head machine bolts can pass the inspection.
According to different customer requirements, the workers will spray oil on the square head machine body, to make it more smooth when installing the nut.
As a professional square head bolt supplier, Rax Industry will try our best to make the perfect square bolt and the super service. If you have any inquiries, never hesitate to contact us.
Conclusion
Now you know what to do when buying square head machine bolts for sale.
Carry out a deep analysis to know the exact machine bolt that you want.
You should also choose a reputable square head machine bolt manufacturer who will supply the best product.
As you can see, square head fasteners are used almost everywhere. They are preferred because it is very easy to work with them.
Frequently asked questions? (FAQs)
Square head machine bolt is a type of fastener that has a round threaded shank which is crowned by a square. It is also called galvanized machine bolt. In the power system, they are designed to fasten the steel cross arm or U channel on to the pole. In the mechanical engineering arena, square head machine bolts are used for building and repairing different types of machines. In the construction industry, galvanized square head bolts in conjunction with the square head nuts are used for the restoration of houses. The usual diameter of the square head machine bolt is 3/8inch, 1/2inch, 5/8inch, 3/4inch.What is a square head machine bolt?
What is the application of square head machine bolts?
What are the common sizes of square head machine bolts?