R & D AND INNOVATION
What are the Advantages of Hexagon Socket Screws?
In our daily life, if you carefully observe the connecting parts-screws on mechanical equipment, you will find that much mechanical equipment uses hexagon socket screws. What are the advantages of hex...
What is a Stepped Weld Nut? What is the Difference with a Hexagonal Nut?
What is a step weld nut?The stepped weld nut is a stepped nut suitable for welding outside the nut. Generally, it is made of weldable materials and thicker and suitable for welding. Welding is equival...
Mechanical Properties of Bolts
1. Grade: The strength grades of metric bolts mainly include: 3.6, 4.6, 4.8, 5.6, 5.8, 6.8, 8.8, 9.8, 10.9, 12.9, a total of 10 performance grades.The distinction and meaning of high-strength bolts: b...
What are the Process Structures of Fastener Threads?
There are four common process structures of fastener threads, namely: chamfer, screw tail, undercut and drill angle.1. ChamferIn order to facilitate the assembly of internal and external threads and p...
Fastener Screw Processing Process Steps
The process of fastener screw manufacturing includes: plate element-annealing-pickling-cold heading-thread rolling-heat treatment-electroplating-packaging.1. Plate ElementRefers to the original wire r...
Brief Introduction of the Different Classification of Fasteners and Screws
As a common part of fastener, screw is widely used, and its types can be divided into many kinds according to different ways.1. Fastener screws are divided into machine screws and self-tapping screws ...
What are the Differences between Fastener Bolts and Screws?
Bolts and screws are our common connection fasteners, which mainly play the role of connection and fixing in various fields and equipment. The difference between fastener bolts and screws:1. The defin...
Types and Causes of Surface Defects of Fastener Nuts-II
3. BurstBurst is also a crack on the metal surface.Causes for bursting: during the forging process, due to surface defects of the raw materials, bursting may occur, such as on the outer surface of the...
Types and Causes of Surface Defects of Fastener Nuts-I
Fastener nuts are common parts of connectors. For the use of fastener nuts, common surface defects are: cracks (quenching cracks, forging cracks and slag cracks, cracks in the locking part of the all-...
Fastener Nuts: Marking, Standard, Process
Nut marking methodMarking of the nut: name, standard number, nominal diameter × pitch-material-surface treatmenta. Name: use the standard name specified by the national standard, such as nuts.b....
Common Classification of Fasteners and Screws
Common classification of fasteners and screws1. Self-tapping screwsAccording to the standard, the reference standard for American self-tapping screws is ANSI/ASME B18.6.4, and the metric reference sta...
Eight Common Misunderstandings of Fasteners
Use coarse teeth instead of fine teethThere are many important connecting parts on the machine, such as the drive shaft, and most of the bolts are fine thread. If there are missing parts during mainte...