4. U-Bolts

U bolts are used for upholding round objects such as pipes, tubes to the wall or any other surface.

5. Wood Screws

Wood screws are used in wood and come in various head shapes which can be selected according to the requirement.

6. Machine Screws

Machine Screws are accompanied with a nut or tapped hole.

7. Self-Tapping Screws

Also known as self-tappers, these screws are mostly used in metal sheets.

8. Socket Screws

Socket screws feature a smooth shank and has an Allen head which are fastened using an Allen key only. Socket screws are available in a different head shape like button, socket cap and counter sunk.

9. Grub Screws

Grub screws are a special type of screw which are found to have no head. These screws are used at the places where there needs to be no movement or rotation between two parts.

B) Nuts: ( Types of Fasteners )

Nuts are used with a bolt to join two or more mechanical parts together. The most commonly known nut is a hexagonal nut, but there are various other types of nuts which are used according to the site requirement.

1. Hex Nuts

Hexagonal nuts have an internal thread in them. These are the most common type of nuts, and are used in almost all types of industries with various applications.

2. Lock Nuts

Lock nuts are used to lock the nut in place without clamping any another object.

3. Nylon Insert Nuts

Well known as Nylon nut, these nuts have a nylon insert which does not let the nut loose due to the effect of vibration.

4. Shear Nuts

Shear nuts have a hexagonal gripping point which snaps off during the maximum torque, leaving just the nut which is quite difficult to remove.

5. Wing Nuts

Wing nuts are commonly used in applications where the nut needs to be removed frequently. These nuts have two external “wings shaped face” which allows for easy manual turning.

C) Washers: ( Types of Fasteners )

Washers are the units which are commonly used between the head of a bolt, screw, nut and any material which is being clamped. The main function of a washer is to increase the bearing area of the head and meanwhile also protect the material from any sort of damage. There are numerous types of Washers, with different uses and functions.

1. Flat Washers

Flat washers are the most common type of washers which are used to evenly distribute the load of the bolt, screw or nut.

2. Spring Washers

Spring washers or locking washers are designed to resist the bolt, screw or nut from losing with the effect of vibration.

3. Cup Washers

Cup Washers are mostly used in conjunction with a wood screw depending upon the requirement of the site.

4. Repair Washers

Commonly known as Penny or Fender Washers. These washers have a small diameter hole and are designed to create a greater bearing surface in order to prevent pull-through.