Mudguard, External Tooth, Internal Tooth, Full Washers, Form A
Copper, TPE, Nylon, Stainless Steel, Steel
4 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
3.2 mm, 5.3 mm, 2.25 mm, 4.36 mm, 6.5 mm
8.1 mm, 1.1 mm, 1.5 mm, 0.16 mm, 0.28 mm
M24, M5 (Form A), M5, M4, M6
DIN 125A, BS 4320B, BS 4320:1968, ASME B18.22.1
ASTM F844, BS 4320G