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ARP Bolts ARP 3/8-16 Stainless Steel 12pt Nut Kit, Polished Finish, Sold as Pair - 401-8321

ARP Bolts 401-8321 - 3/8-16 SS 12pt Nut Kit

If you're looking for reliable fasteners for your next project, the ARP Bolts 401-8321 might just be what you need. These nuts are crafted from high-quality stainless steel, which not only gives them a polished finish but also ensures durability and resistance to corrosion.

Features:

  • Thread Size: 3/8-16 in.
  • Nut Style: 12-point for enhanced grip
  • Nylon Insert: No
  • Self-Locking: No
  • Wrench Diameter: 7/16 in.
  • Nut Material: Stainless steel
  • Nut Finish: Polished
  • Washers Included: No
  • Fastener Yield Strength (psi): 180,000 psi
  • Quantity: Sold as a pair

Many users have appreciated the strength of these nuts, with one customer noting, "I used these on my restoration project, and they held up great under pressure." Another user mentioned, "The polished finish not only looks good but also makes them easy to clean." It's clear that these nuts are not only functional but also add a touch of class to any setup.

While these nuts don’t come with washers and aren’t self-locking, they’re designed for a precise fit and reliable performance in applications where strength is key. With a yield strength of 180,000 psi, you can trust that they will hold up under demanding conditions.

Whether you're a seasoned mechanic or a DIY enthusiast, the ARP Bolts 401-8321 can be a valuable addition to your toolkit. Just remember, these are sold as a pair, so be sure to grab enough for your needs!

Other Part Numbers:
ARP Bolts #arp401-8321

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⚠ WARNING: Cancer and Reproductive Harm
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The Story Behind ARP Bolts

ARP (Automotive Racing Products) was founded by Gary Holzapfel in 1968 when he noticed his drag-racing friends succumbing to bolt-induced engine failure as a result of poor-quality fasteners. He drew upon his expertise in the aerospace industry to develop a solution, which turned into a successful business nonetheless. 

Since its inception, ARP has been engineering and perfecting a wide range of bolts, studs, nuts, and other fasteners for engines, cylinder heads, headers, wheels, and transmissions. Today, ARP remains the undisputed world leader in automotive fasteners. Racing aficionados everywhere know and recognize the ARP brand and can vouch for its quality.

What Makes ARP Bolts So Special?

Located in Ventura, California, all ARP processes from raw wire to finished fasteners are conducted in-house, right here in the USA. The company continually improves its processes with strict quality control guidelines and is dedicated to producing products that are second to none. Simply put, ARP Bolts are better than the competition because of their quality materials and advanced processes. 

ARP prides itself on using only top-quality materials that are above the usual “aerospace-grade” quality that other manufacturers settle for. For example, while 8740 Chromoly steel has four different grades, ARP only uses the top two, SDF and CHQ. These grades cost twice as much as the lower commercial and aircraft grades, but deliver “zero defect” quality that you can trust each and every time.

ARP Bolts are built to withstand serious racing, possess greater tensile strengths, and can survive higher stress levels than most aircraft fasteners. ARP is dedicated to creating fasteners that boast ultimate strength and durability to ensure they last race after race. Its product lineup ranges from quality high-performance OEM parts to exotic specialty hardware for IndyCar, NASCAR, NHRA drag racing, Formula 1, and even marine applications.

Equip Your Ride with ARP Bolts at Vivid Racing

If you are looking to change the fasteners on your car, you’ve come to the right place. No other brand beats out ARP Bolts in terms of strength, quality, and race-proven success. Vivid Racing is, therefore, proud to carry an extensive lineup of products from American Racing Products like bolts, fluids, sealants, hand tools, stud kits, piston sleeves, wheel bolts, and more! If you have any questions regarding the parts above, please call our specialized sales team at (480) 966-3040.

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