Plain Washer, Mudguard, Crinkle, Full Washers, Form A
Fibre, Stainless Steel, Brass, Steel, TPE
28 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
21 mm, 2.2 mm, 5.36 mm, 2.25 mm, 6.5 mm
3.5 mm, 0.6 mm, 8.1 mm, 1.5 mm, 2 mm
M6, M3 (Form A), M5 (Form A), M12, M5
BS 4320:1968, DIN 7980, ASTM F436, DIN 125A, BS 4463