A screw, or bolt, is a type of fastener, typically made of metal, and characterized by a helical ridge, known as a male thread (external thread) or just thread, wrapped around a cylinder. Some screw threads are designed to mate with a complementary thread, known as a female thread (internal thread), often in the form of a nut or an object that has the internal thread formed into it. Other screw threads are designed to cut a helical groove in a softer material as the screw is inserted.
Stainless Steel Knurled Thumb Hexagon Socket Cap Screw
|Standard:||DIN,ASTM/ANSI JIS EN ISO,AS,GB|
|Material||Stainless Steel: SS201, SS303, SS304, SS316,SS316L,SS904L|
Zinc(Yellow,White,Blue,Black),Hot Dip Galvanized(HDG)
phosphorization,Black Oxide,Geomet,Dacroment,anodization,Nickel plated,Zinc-Nickel plated
|Busy season:15-25days,Slack seaon:10-15days|
screws, Example: ISO7380,DIN7981,DIN7982,DIN916,DIN913,