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ARP Bolts ARP 3/8-16 Stainless Steel Coarse Hex Nut Kit, Polished Finish - 400-8704

If you're diving into some serious automotive work or just need reliable fasteners for your projects, let me tell you about the ARP 3/8-16 Stainless Steel Coarse Hex Nut. This little guy packs a punch when it comes to durability and strength.

  • Thread Size: 3/8-16 in. - perfect for a range of applications where you need a solid grip.
  • Nut Style: Hex - easy to work with, whether you're using a wrench or a socket.
  • Nylon Insert: Nope, no nylon here, which means you get a straightforward, reliable fit every time.
  • Self-Locking: Not included, but that gives you the flexibility to mix and match with your setup.
  • Wrench Diameter: 9/16 in. - fits snugly in your toolkit, making it a breeze to tighten or loosen.
  • Material: Stainless steel - this means it won’t rust or corrode easily, so it’ll stand the test of time.
  • Finish: Polished - not only looks good but also helps reduce friction.
  • Washers Included: No, but that just means you can choose the right ones for your specific needs.
  • Fastener Yield Strength: 180,000 psi - that’s some serious strength you're getting here, making it great for high-stress applications.
  • Quantity: Sold individually - so you can grab just what you need without overstocking.

Whether you're working on a custom build or just need to replace some worn-out nuts, this ARP hex nut is a solid choice. It’s reliable, tough, and ready to take on whatever you throw at it. Trust me, you’ll appreciate having these on hand when the time comes to get your hands dirty.

Other Part Numbers:
ARP Bolts #arp400-8704

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⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

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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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