Mudguard, Nylon Washers, Internal Tooth, Full Washers, Form A
301 Stainless Steel, Steel, Nylon, Stainless Steel, Brass
12 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
21 mm, 6.4 mm, 12.5 mm, 2.25 mm, 6.5 mm
1 mm, 1.2 mm, 1.8 mm, 3.5 mm, 0.7 mm
M3 (Form A), M5 (Form A), M12, M4, M5
DIN 6797J, BS 4320:1968, DIN 6798J, ASME B18.22.1
ASTM F844, BS 4320B