Internal Tooth, External Tooth, Plain Washer, Full Washers, Form A
A2/304 Stainless Steel, Brass, Fibre, Steel, TPE
3/4" X 3" X 1/4", 7.99 mm, 15.5 mm, 6.9 mm, 11.88 mm
5.3 mm, 5.36 mm, 2.25 mm, 13 mm, 6.5 mm
1.6 mm, 0.4 mm, 2.5 mm, 0.3 mm, 2.2 mm
M5, M5 (Form A), M20, M4, M2
BS 4320, DIN 6797A, BS 4320B, DIN 6797J, BS 4463