ARP Hex Bolt Kits (621-0515)

The ARP Hex Bolt Kit (621-0515) is a high-strength fastener set designed for demanding automotive, marine, and trailer applications. Made from stainless steel, these bolts are rated at 170,000 psi, offering a significant safety margin over standard Grade 8 hardware. The kit includes 1/4-inch-20 SAE bolts available in hex head or 12-point styles, with various lengths and sizes to suit different needs. These bolts are engineered for durability, corrosion resistance, and maintenance-free performance, making them ideal for both professional and enthusiast use. Their robust construction ensures reliable fastening under high-stress conditions, providing peace of mind in critical applications.

This bolt kit is suitable for a wide range of vehicles and equipment, including cars, boats, and trailers. It is designed to be a direct replacement or upgrade for existing hardware requiring 1/4-inch-20 threads. The kit's versatility allows for use in various assembly and repair tasks where high strength and corrosion resistance are essential. Installation is straightforward, with the bolts fitting standard SAE thread specifications. Whether for restoration, performance upgrades, or routine maintenance, these stainless steel bolts ensure secure, long-lasting fastening in demanding environments.