Loose Bolt, Nut, Insert Lock Nut, Fixing Nut, Serrated Flanged Nut
Full Hex, K-Nut, Lock nut, Flanged, Hex
Ceramic, Steel, Nylon, Stainless Steel, Brass
A4, 316 A4, Grade 8, A4 316, A2 304
19 mm, 3.2 mm, 9.9 mm, 5.5 mm, 17 mm
M2.5, 9/16-18", 4-40"(NM), 5/8-11", M8
6.6 mm, 28 mm, 10 mm, 5.1 mm, 5 mm