Cup, Mudguard, Crinkle, Full Washers, Form A
301 Stainless Steel, TPE, Nylon, Copper, Brass
28 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
12.2 mm, 17 mm, 16.2 mm, 2.25 mm, 6.5 mm
0.7 mm, 1.8 mm, 1.2 mm, 1.1 mm, 0.3 mm
M3 (Form A), M16, M2, M5, M5 (Form A)
DIN 125A, BS 4320:1968, ASME B18.8.1, ASME B18.21.1, BS 4320B