Automotive Racing Products (ARP) has expanded its line of specialty nuts and washers, introducing nearly 60 new kits for 2026 to complement its existing fastener offerings.
The Ventura, Calif.-based manufacturer said the additions are designed to support its broad selection of bulk bolts and studs, which are sold in size-based kits rather than by specific vehicle application.
ARP’s washer lineup includes polished stainless steel and black oxide-treated 8740 chrome moly models in SAE sizes ranging from 1/4-inch to 3/4-inch. Both standard and chamfered versions are available, with chamfered designs intended for use with bolts.
Metric washer sizes from M6 to M18 are also offered. The company also produces special insert washers intended to protect the tops of holes from galling or collapsing, available in popular SAE and Metric sizes.
In addition to washers, ARP manufactures a range of premium nuts produced in-house. The company states the components are built to meet stringent industry specifications.
Available nut configurations include polished stainless steel and black oxide-treated 8740 chrome moly 12-point and hex nuts for SAE coarse, fine-thread and Metric applications. The lineup also includes Nyloc and self-locking hex “Jet” nuts, 12-point “K” nuts, and serrated flange nuts.
Founded in 1968, ARP remains family owned and operated. The company operates from its headquarters at 1863 Eastman Avenue in Ventura, California.
Product details are included in ARP’s 2026 catalog, available online at ARPcatalog.com or by request in a printed 180-page edition. Technical assistance is available by phone at 800-826-3045.
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