Internal Tooth, Mudguard, Cup, Full Washers, Form A
301 Stainless Steel, Copper, TPE, Steel, Brass
8.8 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
17 mm, 5.3 mm, 5.36 mm, 2.25 mm, 6.5 mm
1.2 mm, 2.5 mm, 0.8 mm, 1 mm, 0.28 mm
M3.5, M5, M3 (Form A), M2, M5 (Form A)
DIN 6797A, BS 4320B, BS 4463, ASME B18.8.1, ASME B18.21.1