Tight Tolerance Shoulder Screws
Tight tolerance shoulder screws mean to have two or more steps of the screw, this kind of screw needs to open mold to produce, so there is very little on the market, generally customized according to customer needs. Manufacturer of shoulder screws customization : Shenzhen Shi Shi Tong Metal Products Co., Ltd., located in Shenzhen, China, is famous for its high quality, high tight tolerance.
Shoulder Screws Standard :
BS 4168-7-1982 Metric socket hexagon cheese head shoulder screws.
GB /T 946-1988 Slotted raised cheese head shoulder screws.
DIN 923-1986 Slotted pan head screws with shoulder.
If you have a tight tolerance shoulder screws requirement for tight tolerance, it is recommended that you find a reliable screw manufacturer to do the shoulder screw you want. The shoulder screws can be produced by the mold closing machine, which can reduce the cost of automatic lathe and reduce the cost more effectively. Shoulder screw is one of the superior products of Shi Shi Tong screw factory. annie.li@szsst88.com