Spring, Crinkle, Nylon Washers, Full Washers, Form A
Fibre, Brass, Steel, TPE, Stainless Steel
12 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
16.2 mm, 2.25 mm, 21 mm, 4.36 mm, 6.5 mm
1.8 mm, 0.28 mm, 1.6 mm, 1.1 mm, 2.2 mm
M2, M3 (Form A), M12, M24, M5 (Form A)
BS 4320, ASME B18.8.1, ASME B18.22.1
ASTM F844, BS 4320B, DIN 7603A