Plain Washer, Tap Washer, Cup, Full Washers, Form A
Fibre, Vulcanised Fibre, TPE, Stainless Steel, Copper
4.51 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
2.5 mm, 1 mm, 0.3 mm, 2.2 mm, 0.28 mm
M20, M24, M5 (Form A), M6, M2
BS 4320B, DIN 7980, BS 4320:1968, DIN 125A, ASTM F436