ZTF 528Pcs Grade 8 Bolts and Nuts Assortment Kit, SAE Hex Bolt Hardware Set

528-Piece Comprehensive SAE KitThis heavy-duty fastener assortment includes 528 pieces of Grade 8 SAE hex bolts, matching hex nuts, flat washers, and lock washers. Featuring popular fractional sizes (1/4"-20, 5/16"-18, and 3/8"-16), it provides a complete, all-in-one hardware solution for your workshop. | Grade 8 High Tensile Carbon SteelForged from premium-grade carbon steel and finished with a durable yellow zinc plating. This superior construction delivers exceptional tensile strength, heavy load-bearing capacity, and outstanding resistance to rust and corrosion. | Precision Threads & Secure FitManufactured to rigorous SAE industry standards with clean, uniform threading and burr-free cutting. Bolts and nuts pair together smoothly and tightly, ensuring maximum anti-loosening performance under high-vibration conditions. | Versatile Professional & DIY UsesAn essential toolkit for automotive repairs, machinery maintenance, construction projects, agricultural equipment, and household fixes. Perfect for professional mechanics, engineers, contractors, and DIY enthusiasts. | Upgraded Compartmentalized CaseHoused in a heavy-duty, impact-resistant storage organizer with a transparent lid and clear size labels. Individual grid compartments keep every bolt and nut neatly sorted, preventing mix-ups and saving valuable time.