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ARP Bolts 5/16in ID .550in OD Black Chamfer Washers, Chromoly, 10 Pack - 200-8585

If you’re diving into some serious work on your rig, you’ll want to check out these ARP Black Chamfer Washers. I’ve been using them for a while now, and let me tell you, they’re a game changer. With an outside diameter of 0.550 inches (that’s about 13.970 mm for those who prefer metric), these washers fit snugly without any fuss. The inside diameter measures 0.313 inches (or 7.950 mm), which is just right for most applications where you need a solid, reliable hold.

What really sets these washers apart is the material—made from tough chromoly, they’re built to withstand some serious stress. The black oxide finish not only looks sleek but also adds a layer of protection against corrosion, which is a huge plus if you’re working in less-than-ideal conditions. And let’s not forget the thickness; at 0.120 inches (3.048 mm), they’re thick enough to do the job without being overkill.

One feature I really appreciate is the chamfered inside diameter. It helps with installation, making sure everything seats properly. Plus, these washers are hardened, so you know they won’t let you down when the heat is on. You get a set of 10, which is perfect for keeping a few extras on hand for those unexpected repairs or upgrades.

So if you’re looking for quality, durability, and a bit of style for your next project, grab a pack of these ARP washers. They’ve become a staple in my toolbox, and I’m sure they’ll earn a spot in yours too.

Other Part Numbers:
ARP Bolts #arp200-8585

Proposition 65

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

ARP Bolts Logo

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.

ARP Store | ARP Bolts | ARP Stud Kits | ARP Wheel Bolts | ARP Clearance

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