External Tooth, Tap Washer, Cup, Full Washers, Form A
Stainless Steel, Steel, TPE, Vulcanised Fibre, Brass
4.51 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
4.85 mm, 12.2 mm, 5.3 mm, 16.2 mm, 6.5 mm
1.8 mm, 0.4 mm, 0.28 mm, 8.1 mm, 1.5 mm
M4, M3 (Form A), M5 (Form A), M2, M3
DIN 6798J, ASME B18.8.1, BS 4463, DIN 7603A, BS 4320B