Crinkle, Cup, Internal Tooth, Full Washers, Form A
Brass, Fibre, TPE, Stainless Steel, Copper
4.5 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
4.85 mm, 10.5 mm, 21 mm, 12.5 mm, 6.5 mm
5.8 mm, 0.7 mm, 0.5 mm, 0.6 mm, 8.1 mm
M6, M3 (Form A), M5 (Form A), M12, M8
ASME B18.21.1, BS 4463, ASME B18.8.1, BS 4320B, BS 4320