ARP Bulk Fasteners
When your build demands precision fasteners beyond application-specific kits, ARP offers thousands of fastener kits tailored to specific engines and vehicle applications, but sometimes you just need some high-quality fasteners for a different project. The company's bulk fasteners line delivers the same aerospace-inspired engineering that powers Formula 1 and NHRA championship engines, available in individual pieces for custom installations, accessory mounting, and fabrication work.
Material Options and Strength Ratings
Bolts are available in 180,000 psi tensile strength 8740 chrome moly with a black oxide finish, or 170,000 psi tensile strength stainless steel with a polished, corrosion-resistant finish. This versatility allows builders to select the optimal material for each application—chrome moly for maximum strength in critical engine and chassis mounting points, or stainless steel where corrosion resistance matters most. Both material options exceed Grade 8 hardware specifications by substantial margins, providing an extra safety factor in demanding environments.
The bulk fastener selection includes hardware in both SAE (inch) measurements and metric sizes, with options for hex head or 12-point configurations. This comprehensive sizing ensures compatibility with virtually any domestic, import, or custom-fabricated application.
Convenience Packaging for Professionals
Whether you're a race team, hot rod shop, engine builder or just a weekend hobbyist, ARP Bulk Bins offer you the convenience of having the right fasteners at the right time. Available in ARP stainless or black oxide and wrenching options of either hex or 12-point heads, standard or metric. These organized bin systems allow professional shops to maintain inventory of critical fastener sizes without ordering complete application-specific kits.
The ARP Manufacturing Difference
Every ARP bulk fastener benefits from the same rigorous quality control that defines the ARP brand. At ARP, we fatigue test to elevated loads (10% above aerospace requirements) and to a minimum cycle life that exceeds 350,000 cycles. The majority of samples are routinely tested to one million cycles. This testing protocol ensures that even general-purpose hardware maintains the structural integrity demanded by professional motorsports applications.
All ARP fasteners are proudly made in the USA to the industry's highest standards, with complete in-house control over forging, machining, heat treatment, and finishing processes. Whether you're securing an intake manifold, mounting accessory brackets, or fabricating custom suspension components, ARP bulk fasteners deliver measurable strength advantages over conventional hardware store alternatives.