Internal Tooth, Plain Washer, Mudguard, Full Washers, Form A
Fibre, Brass, Steel, TPE, Stainless Steel
28 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
4.85 mm, 2.1 mm, 13 mm, 6 mm, 6.5 mm
0.4 mm, 0.5 mm, 1.5 mm, 0.3 mm, 0.16 mm
M4, M2.5, M3 (Form A), M16, M5 (Form A)
DIN 127B, DIN 7603, BS 4320, BS 4320B, BS 4463