Internal Tooth, Lock Washer, Plain Washer, Full Washers, Form A
Fibre, Stainless Steel, TPE, Steel, Nylon
4.5 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
4.85 mm, 6.4 mm, 2.25 mm, 21 mm, 6.5 mm
1.8 mm, 3.5 mm, 8.1 mm, 1.2 mm, 1.1 mm
M3, M24, M5 (Form A), M6, M12
BS 4320G, DIN 6797J, ASME B18.22.1
ASTM F844, BS 4463, ASME B18.21.1