hex double ended / bolt screw
Customized

1. Material: Steel, Alloy steel, Stainless steel 
2. Finish: according to you need (Cr3+Z,Cr3+ZY,CR3+BZ,CR+ Real Yellow Zinc,  Passivation, ZnFe, ZnNi, ...etc.)
3. Process Capability: Diameter M3 to M8 Length:3 to 50mm 
4. High quality and competitive prices
5. Prompt delivery time
6. Country of Origin: China / Taiwan
7. Rohs/Reach Compliant/Halogen Free Compliance

Bolts generally refer to screws with a relatively large diameter, and they can also have no heads, such as stud bolts.

Usually, it is not called "stud bolt", but is called " Double-ended stud ". The most commonly used form of double-ended studs has threads at both ends and a polished rod in the middle.

The main purposes of stud bolts are as follows:
1. It is used for the accessories that need to be installed for the main body of large equipment, such as: sight glass, mechanical seal seat, reduction frame, etc. At this time, stud bolts are used, one end is screwed into the main body, and the other end is equipped with a nut after the attachment is installed. Because the attachment needs to be removed frequently, the thread will wear quickly, and it is very convenient to use stud replacement.

2. When the thickness of the connecting body is large and the bolt length is very long, stud bolts will be used at this time.

3. It is used to connect thick plates and places where it is inconvenient to use hexagonal bolts, such as: concrete roof truss, roof beam suspension monorail beam suspension, etc. Double-headed screws need to be prevented from loosening.

In actual work, external loads such as vibrations, changes, and high-temperature creep of materials will reduce friction. The positive pressure in the thread pair disappears at a certain moment, and the friction force is zero, thereby loosening the threaded connection. After repeated action, the threaded connection will relax and fail. Therefore, it is necessary to prevent loosening, otherwise it will affect normal work and cause accidents.