Plain Washer, Cup, Crinkle, Full Washers, Form A
Brass, Fibre, Stainless Steel, 301 Stainless Steel, TPE
12 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
4.85 mm, 6 mm, 21 mm, 5.36 mm, 6.5 mm
1.4 mm, 5.8 mm, 1.8 mm, 0.4 mm, 0.28 mm
M3 (Form A), M12, M24, M5 (Form A), M2
ASME B18.22.1
ASTM F844, DIN 7980, ASTM F436, DIN 7603A, BS 4320B