Cup, Plain Washer, Mudguard, Full Washers, Form A
Brass, Steel, 301 Stainless Steel, Copper, TPE
4 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
5.3 mm, 5.36 mm, 2.25 mm, 4.36 mm, 6.5 mm
0.28 mm, 0.6 mm, 0.4 mm, 1.1 mm, 0.16 mm
M3 (Form A), M6, M24, M5 (Form A), M12
BS 4320, DIN 7980, ASME B18.22.1
ASTM F844, BS 4320G, DIN 7603A