Drywall Screw

Flat washers; DTI Washer (Direct tension indicators; Fender washer (Large Series Flat Washer); Washers for nut assemblies.

SB

Standard

Fine/Coarse Threaded, Self-Drilling/Bugle Head and Gypsum Board screws

Grade

Carbon Steel

Size range

M3.5 TO M4.2

Coating (surface)

Black Phosphate