1-800-826-3045 Tech Support Find a Dealer Call Support Dealer

The World Leader

in High Performance

Automotive Fasteners

5/8"-18 12pt nut kit

300-8309

5/8"-18 12pt nut kit

Bulk FastenersNut

Material

8740 Chrome Moly

Products

Search Kits New Kits Catalog Search by Vehicle Bolts, Nuts, Washers

Resources

FAQ Instruction Lookup ARP Ultra-Torque Material Specs Image Gallery

Company

About ARP Manufacturing Contact Us Find a Dealer Dealer Inquiry Kit Suggestions Custom Fasteners Legal & Privacy

Contact

Order Desk & Technical Support

Email

[email protected]

1863 Eastman Avenue

Ventura, CA 93003

© 2026 Automotive Racing Products (ARP). All rights reserved.