Internal Tooth, Nylon Washers, Plain Washer, Full Washers, Form A
301 Stainless Steel, Stainless Steel, Copper, Brass, TPE
4.51 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
4.36 mm, 2.6 mm, 4.85 mm, 13 mm, 6.5 mm
1 mm, 0.6 mm, 8.1 mm, 0.8 mm, 0.28 mm
M4 (Form A), M2.5, M6 (Form A), M3 (Form A), M5 (Form A)
BS 4320B, BS 4320:1968, BS 4320, DIN 7980, DIN 7603A