1/2"-13 x 1-1/2" Grade 8 Bolts (50-Pack) – Heavy-Duty Hex Bolts with Prevailing Torque All Metal Lock Nuts – High-Strength SAE J429 Anti-Vibration 1.5" Coarse Thread Bolts

These 1/2"-13 x 1-1/2" (1.5") long Grade 8 (G8) Bolts are engineered for applications where strength, reliability, and vibration resistance matter most. Each pack combines 50 high-strength Grade 8 (G8) hex bolts, and 50 all metal prevailing torque locking hex nuts. Designed for use in automotive repairs, trailer builds, agricultural equipment, shop machinery, and structural assemblies, this kit eliminates the need to source parts separately—saving time while ensuring proper fit and performance. Whether you’re a professional mechanic, fabricator, or serious DIYer, this fastener kit delivers the confidence of industrial-grade hardware in a convenient, ready-to-use package.

• Complete All Metal Lock Nut High Temp 50-packs: Includes 50 Grade 8 hex bolts, 50 all metal prevailing torque lock nuts— everything you need for strong, vibration-resistant fastening in one convenient pack. Bolts 1/2" x 1.5" long. Nuts fit 1/2" bolts.
• High-tensile SAE J429 Grade 8 bolts. Bolts: Threads are made to the requirements of ASME B1.1. ASME B18.2.1 Dimensional Requirements. SAE J429 Material and Strength Level. ASTM A564 Material and Strength Level. ASTM F788 Surface Discontinuities. ASME B18.18 Inspection and Quality Assurance. Nuts: IFI 100/107 for Grade C, Rc 26/36 for fasteners up to a Grade 8 strength level.
• Utimate Anti-Vibration All Metal Locking System: Work in high-temperature environments. Perfect for equipment that sees constant vibration or cyclic loads, and has a high temp.
• Precision-Matched Components: All fasteners are 1/2"-13 UNC for reliable fit and consistent clamping force across every assembly — no mismatched hardware, no guesswork.
• Built for Pros & Serious DIYers: Whether you’re repairing equipment, building fixtures, or assembling heavy components, this kit delivers industrial-grade reliability in a compact, easy-to-store format.