Loose Bolt, Fixing Nut, Half, Insert Lock Nut, Serrated Flanged Nut
Full Hex, K-Nut, Lock nut, Hex Full, Flanged
Brass, Stainless Steel, Bright Zinc Plated Steel, Ceramic, Nylon
Grade 8, A4 316, A4, 316 A4, A2 304
8 mm, 30 mm, 3.2 mm, 9.9 mm, 17 mm
5/16-18", 1/4-20"(NE), M4, 5/8-11", 4-40"(NM)
2.29 mm, 4.1 mm, 6.6 mm, 28 mm, 5.1 mm