Alright, let’s talk about the ARP 1/2inID 7/8inOD Black Washer. If you’re diving into a project where you need something that can really take a beating, this is a solid pick. It’s made from chromoly, which means it’s tough as nails and built to last. You won’t have to worry about these washers giving out on you when the pressure's on.
Now, let’s get into the numbers. The outside diameter is 0.875 inches (that’s about 22.225 mm for you metric folks), while the inside diameter is 0.500 inches (or 12.700 mm). The thickness comes in at 0.120 inches (around 3.048 mm), which is just right for a lot of applications. Whether you’re working on a custom build or just need a reliable washer for your repairs, this one fits the bill.
What’s great about these washers is the black oxide finish. Not only does it look sharp, but it also helps with corrosion resistance. So, if you’re in a humid area or just want to keep things looking fresh, this finish is a nice touch. And yeah, they’re hardened, so they can handle the stress without bending or breaking.
Just a heads up, these are sold individually, so make sure to grab what you need for your project. If you’re serious about your build, don’t skimp on the little stuff. Grab a few of these ARP washers, and you’ll be set for whatever you’re tackling next.
Other Part Numbers:
ARP Bolts #arp200-8514
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

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 RacingIf 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.