3/4"-10 x 3 Grade 8 Bolts (4-Pack) – Heavy-Duty Hex Bolts Includes Flat Washers & All Metal Prevailing Torque Lock Nuts – High-Strength SAE J429 3.0" Coarse Thread Yellow Zinc

3/4"-10 x 3 Grade 8 Bolts (4-Pack) – Heavy-Duty Hex Bolts Includes Flat Washers & All Metal Prevailing Torque Lock Nuts – High-Strength SAE J429 3.0" Coarse Thread Yellow Zinc

• Complete 4-packs: Includes 4 Grade 8 hex bolts, 4 hardened flat washers, 4 all metal prevailing torque hex lock nuts — everything you need for strong, vibration-resistant fastening in one convenient pack. Bolts 3/4" diameter x 3.0" long. Nuts and washers fit 3/4" bolts. Bolts and nuts coarse threaded. Yellow Zinc finish.
• Grade 8 Strength for Demanding Jobs: High-tensile SAE J429 Grade 8 bolts deliver superior load capacity and shear strength, making this kit ideal for automotive, trailer, machinery, and structural applications. 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. 150,000 psi min tensile strength. Hardness 33/39.
• Vibration-Resistant Locking System: Washers: SAE NT Hardened washers Rc 38/45 help prevent loosening under torque, shock, and movement — perfect for equipment that sees constant vibration or cyclic loads. PER ASTM F-436. Nuts: Grade C, the material properties and strength requirements are per IFI 100/107, 150,000 psi proof load strength, hardness Rc 26/34. The performance requirements (locking ability) per IFI 100/107.
• Precision-Matched Components: All fasteners are 3/4"-10 UNC Coarse threaded 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.