Internal Tooth, Plain Washer, Lock Washer, Full Washers, Form A
Ceramic, A2/304 Stainless Steel, Fibre, TPE, Copper
4.51 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
4.85 mm, 13 mm, 5.3 mm, 16.2 mm, 6.5 mm
0.7 mm, 1.2 mm, 0.6 mm, 1.8 mm, 1.1 mm
M20, M24, M5 (Form A), M2, M4
BS 4320:1968, ASME B18.8.1, DIN 125A, ASME B18.22.1
ASTM F844, BS 4320B