ARP Fasteners

Over 50 New Specialty Nut and Washer Kits from ARP

We’re all familiar with Automotive Racing Products, best known simply as ARP, for their incrediby strong fasteners including engine assembly bolts and studs. But did you know they also have a huge variety of “bulk” bolts and studs available in kits by size? These can really come in handy during drivetrain assembly and other details and to complement these bulk offerings, ARP also offers an assortment of nuts and washers, including nearly 60 new kits for 2026.

ARP’s washer lineup includes both polished stainless steel or black oxide treated 8740 chromoly in SAE sizes from 1/4” to 3/4” with a choice of standard or chamfered models (designed for use with bolts). Metric sizes from M6 to M18 are also available. Special insert washers —ideal for protecting the top of holes from galling or collapsing— are also offered in popular SAE and Metric sizes.ARP Fasteners

ARP, founded in 1968 and remaining family owned and operated to this day, also offers a variety of premium quality nuts that are manufactured in-house to the industry’s most stringent specifications. In addition to polished stainless steel and black oxide treated 8740 chromoly 12-point and hex nuts for SAE coarse, fine and Metric applications, ARP also offers Nyloc and Self-Locking hex “Jet” nuts and 12-point “K” nuts. Serrated flange nuts are also available.ARP Fasteners

For details check out ARP’s 2026 catalog online or request a free printed copy. Personalized technical assistance is available at 800-826-3045 or simply browse their vast product line at ARP Fasteners.