Sems Screws 3/8″

SEMS are threaded fasteners which combine and captivate one or more washers onto a screw. They are assembled with speed and precision, eliminating costly hand assembly and improving production efficiency and quality. The screw and washer are permanently attached, but the washer remains free spinning.
Virtually any type of screw (Tapping, Machine, Thread Cutting, etc) can be combined with a variety of washers to suit any application. Sizes range from #2 through 38″ (M2 through M10). The applicable standard is ANSI B18.13.
Washer Types available for SEMS: Tooth (Internal, External and Combination), Helical Split, Flat, Conical, Terminal and Proprietary Designs (Square Cone, Split Flat Combo).
DRIVE STYLES: Tamper Resistant, One Way, Spanner
HEAD STYLES: Round