Thru-Hardened Steel

Select Material
Extra Thick - Zinc Yellow - USA
Heavy Duty Thru-Hard Washers USS - Zinc Yellow
Gr-5 & Gr-8 Applications - Zinc Yellow
Thru-Hardened Flat Washers USS - Zinc Yellow
Gr-9 Applications - EcoGuard Gray/Silver
USS Thru-Hard Flat Washers for Gr-9 Applications