Place of Origin
Shanghai, China
Model Number
self drilling screw
Name
Roofing Screws Hex Sems Screws Oem With Epdm Washer
Finished
zinc plated(clear/bule/yellow)+wax,black/grey phosphate,nickel, ruspet
Head type:
hex , flat, pan, truss, round, hex washer, Oval, pan framing, bugle
MTR:
Carbon Steel,314,316,etc
Material:
C1022+ heat treatment, SS304, SS316
Standard No:
ASME B18.6.4 & SAE J78 DIN7504K, DIN7504P,DIN7504N