25 Jul 4 Pack of 1/2″-13 x 5-1/2 Grade 8 Heavy Duty Hex Bolts Plus Washers & Nylon Nuts
Nuts and washers fit 1/2" bolts. SAE J429 Material and Strength Level. ASTM A564 Material and Strength Level. ASTM F788 Surface Discontinuities. Washers: SAE NT hardened RC 38-45, which is compatible with a Grade 8 fastening system....