Plain Washer, Mudguard, Crinkle, Full Washers, Form A
301 Stainless Steel, Fibre, TPE, Ceramic, Brass
12 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
2.6 mm, 4.85 mm, 5.3 mm, 2.25 mm, 6.5 mm
0.6 mm, 3.5 mm, 0.28 mm, 0.4 mm, 2.5 mm
M2, M10, M12, M5 (Form A), M5
DIN 6797A, BS 4320B, BS 4320:1968, BS 4320G, BS 4320