In the hardware industry, fasteners such as nut columns, bolts, nuts, rivets, etc. are used in the fields of outer box machines and high-speed rail. What is the difference between them?

Standard fasteners are divided into twelve categories, and the selection can be determined according to the use occasions and functions of the fasteners.

1. Stud

Studs are mostly used to connect one of the connected parts with a large thickness and need to be used in places where the structure is compact or the bolt connection is not suitable due to frequent disassembly. There are equal-length and unequal-length studs, and the unequal-length studs are suitable for occasions where one end is screwed into the body of the component for connection or fastening.

2. Nuts

There are hex nuts, square nuts, slotted nuts, lock nuts and special purpose nuts: such as wing nuts, cap nuts, knurled nuts and insert nuts.

3. Screws

1.Machine screws: Divided into many varieties due to different head shapes and groove shapes. There are several types of head types: cylindrical head, pan head, countersunk head and semi-sunk head.

2.Set screws: Set screws are used to fix the relative position of parts. The head has a slot, a hexagon socket and a square head.

3.Hexagon socket head cap screws: The socket head cap screws are suitable for occasions where the installation space is small or the screw head needs to be embedded.

4.  Special-purpose screws: such as set screws, captive screws and eye screws.