Auto Racing Products Flat Washers 5/16in ID x .550in OD — Universal Racing Fasteners

SKU: BQDN_200-8584
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About Auto Racing Products ARP (Automotive Racing Products) makes the ...Read More

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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Auto Racing Products

ARP (Automotive Racing Products) makes the strongest fasteners in motorsport — head studs, main studs, rod bolts, and flexplate bolts used by every Formula 1, NHRA, NASCAR, and championship motorsport program. Aerospace-grade alloys, exact-fit machining.

Premium Flat Washers for Racing Applications

When every detail counts in your engine build, use Auto Racing Products flat washers to ensure secure and reliable fastening. These washers are specifically designed to provide a stable surface for bolts and nuts, distributing pressure evenly across the mounting surface to prevent loosening and material fatigue.

Technical Specifications

  • Inner Diameter (ID): 0.313 inches (5/16")
  • Outer Diameter (OD): 0.55 inches
  • Thickness: 0.12 inches
  • Material: Chromoly Steel
  • Finish: Black Oxide
  • Quantity: Set of 10

Constructed from high-grade chromoly, these washers offer significantly higher durability than standard hardware store alternatives. The black oxide coating provides an extra layer of protection against corrosion, ensuring that your fasteners remain easy to remove and reinstall during future maintenance. These washers are ideal for various automotive applications, from engine accessories to chassis components. Their precise dimensions and robust material composition make them a staple for any professional engine builder or dedicated hobbyist. Trust GGCRACING to supply the high-performance hardware you need to keep your vehicle secure and reliable under the most demanding racing conditions.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Auto Racing Products

ARP (Automotive Racing Products) makes the strongest fasteners in motorsport — head studs, main studs, rod bolts, and flexplate bolts used by every Formula 1, NHRA, NASCAR, and championship motorsport program. Aerospace-grade alloys, exact-fit machining.

Premium Flat Washers for Racing Applications

When every detail counts in your engine build, use Auto Racing Products flat washers to ensure secure and reliable fastening. These washers are specifically designed to provide a stable surface for bolts and nuts, distributing pressure evenly across the mounting surface to prevent loosening and material fatigue.

Technical Specifications

  • Inner Diameter (ID): 0.313 inches (5/16")
  • Outer Diameter (OD): 0.55 inches
  • Thickness: 0.12 inches
  • Material: Chromoly Steel
  • Finish: Black Oxide
  • Quantity: Set of 10

Constructed from high-grade chromoly, these washers offer significantly higher durability than standard hardware store alternatives. The black oxide coating provides an extra layer of protection against corrosion, ensuring that your fasteners remain easy to remove and reinstall during future maintenance. These washers are ideal for various automotive applications, from engine accessories to chassis components. Their precise dimensions and robust material composition make them a staple for any professional engine builder or dedicated hobbyist. Trust GGCRACING to supply the high-performance hardware you need to keep your vehicle secure and reliable under the most demanding racing conditions.

Product Details

Product Description

About Auto Racing Products

ARP (Automotive Racing Products) makes the strongest fasteners in motorsport — head studs, main studs, rod bolts, and flexplate bolts used by every Formula 1, NHRA, NASCAR, and championship motorsport program. Aerospace-grade alloys, exact-fit machining.

Premium Flat Washers for Racing Applications

When every detail counts in your engine build, use Auto Racing Products flat washers to ensure secure and reliable fastening. These washers are specifically designed to provide a stable surface for bolts and nuts, distributing pressure evenly across the mounting surface to prevent loosening and material fatigue.

Technical Specifications

  • Inner Diameter (ID): 0.313 inches (5/16")
  • Outer Diameter (OD): 0.55 inches
  • Thickness: 0.12 inches
  • Material: Chromoly Steel
  • Finish: Black Oxide
  • Quantity: Set of 10

Constructed from high-grade chromoly, these washers offer significantly higher durability than standard hardware store alternatives. The black oxide coating provides an extra layer of protection against corrosion, ensuring that your fasteners remain easy to remove and reinstall during future maintenance. These washers are ideal for various automotive applications, from engine accessories to chassis components. Their precise dimensions and robust material composition make them a staple for any professional engine builder or dedicated hobbyist. Trust GGCRACING to supply the high-performance hardware you need to keep your vehicle secure and reliable under the most demanding racing conditions.

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