Crinkle, Cup, Internal Tooth, Full Washers, Form A
Fibre, TPE, Steel, Nylon, Brass
12 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
2.1 mm, 3.2 mm, 12.5 mm, 16.2 mm, 6.5 mm
0.5 mm, 1.1 mm, 0.8 mm, 3 mm, 0.28 mm
M20, M10, M8, M5 (Form A), M5
ASME B18.22.1 ASTM
F844, DIN 7980, BS 4320G, BS 4320B, DIN 125A