Spherical Flat Cylindrical Head Steel Screws

Item: non standard Spherical Head Steel Screws Standard: ISO, PIN and as required Size: M3-M100 MOQ: 50 000pcs Head type: round, spherical head, ball head Type of drive insert: Slotted, Philips socket, Square socket, Hexagon recess, Indented hexagon, Special cross recess, Pozidrive cross recese, Slotted square socket Grade：4.8/ 8.8/ 10.9/ 12.9 Ect Thread size: M1.6-M160, standard or custom Material:Low carbon steel/medium carbon steel/stainless steel/metal alloy/brass/aluminum/copper/customazition Length:1-500mm, 1/16” – 16” Surface treatment:as required Heat treatment: quenching，annealing, surface carburization other service: OEM, ODM, Customized available on products and package.