Internal Tooth, Nylon Washers, Crinkle, Full Washers, Form A
Steel, 301 Stainless Steel, Copper, TPE, Brass
4.51 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
3.2 mm, 5.36 mm, 17 mm, 21 mm, 6.5 mm
0.5 mm, 1.8 mm, 1 mm, 8.1 mm, 1.2 mm
M2.5, M3 (Form A), M2, M24, M5 (Form A)
BS2870 CZ108, BS 4320C, ASME B18.22.1
ASTM F844, ASME B18.8.1, BS 4320B