Auto Racing Products

Auto Racing Products Chromoly Flat Washers - 5/16" ID x .675" OD Chamfered - Black Oxide (10-Pack)

Auto Racing Products Chromoly Flat Washers - 5/16" ID x .675" OD Chamfered - Black Oxide (10-Pack)
Auto Racing Products Chromoly Flat Washers - 5/16" ID x .675" OD Chamfered - Black Oxide (10-Pack)
Auto Racing Products Chromoly Flat Washers - 5/16" ID x .675" OD Chamfered - Black Oxide (10-Pack)
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Auto Racing Products Chromoly Flat Washers - 5/16" ID x .675" OD Chamfered - Black Oxide (10-Pack)Auto Racing Products Chromoly Flat Washers - 5/16" ID x .675" OD Chamfered - Black Oxide (10-Pack)Auto Racing Products Chromoly Flat Washers - 5/16" ID x .675" OD Chamfered - Black Oxide (10-Pack)
Auto Racing Products

Auto Racing Products Chromoly Flat Washers - 5/16" ID x .675" OD Chamfered - Black Oxide (10-Pack)

SKU: BQDN_200-8587
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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
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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.

ARP 5/16" ID Chamfered Flat Washers: Precision & Strength

Experience the ultimate in fastening precision with Auto Racing Products (ARP) 5/16" ID Chamfered Flat Washers. These specialized chromoly washers are engineered for applications requiring both superior strength and a refined fit. The chamfered edge is a critical design element, allowing for improved seating and reducing stress concentrations, which is vital in high-performance and custom builds. Each washer is treated with a black oxide finish, providing excellent corrosion resistance and a professional appearance.

Advanced Design for Critical Fastening

  • High-Grade Chromoly Steel: Offers exceptional durability and resistance to stretching or deformation under extreme loads.
  • Chamfered Edge: Ensures proper seating and prevents interference, particularly in applications with tight clearances or specific bolt head designs.
  • Corrosion-Resistant Black Oxide: Provides a protective layer against rust and environmental wear, extending component life.
  • Precise Dimensions: Features a 0.313-inch inner diameter, 0.675-inch outer diameter, and 0.12-inch thickness for exact fitment in demanding assemblies.

The ARP Difference in Fastener Technology

These ARP chamfered flat washers are more than just standard hardware; they are meticulously engineered components designed to enhance the reliability and performance of your vehicle. Ideal for engine, transmission, or chassis applications where a secure and precise fit is non-negotiable. The combination of chromoly strength and the chamfered design makes them indispensable for enthusiasts and professionals seeking the best in fastening solutions. Each set includes 10 washers, reflecting Auto Racing Products' commitment to quality and comprehensive solutions for your automotive needs.

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.

ARP 5/16" ID Chamfered Flat Washers: Precision & Strength

Experience the ultimate in fastening precision with Auto Racing Products (ARP) 5/16" ID Chamfered Flat Washers. These specialized chromoly washers are engineered for applications requiring both superior strength and a refined fit. The chamfered edge is a critical design element, allowing for improved seating and reducing stress concentrations, which is vital in high-performance and custom builds. Each washer is treated with a black oxide finish, providing excellent corrosion resistance and a professional appearance.

Advanced Design for Critical Fastening

  • High-Grade Chromoly Steel: Offers exceptional durability and resistance to stretching or deformation under extreme loads.
  • Chamfered Edge: Ensures proper seating and prevents interference, particularly in applications with tight clearances or specific bolt head designs.
  • Corrosion-Resistant Black Oxide: Provides a protective layer against rust and environmental wear, extending component life.
  • Precise Dimensions: Features a 0.313-inch inner diameter, 0.675-inch outer diameter, and 0.12-inch thickness for exact fitment in demanding assemblies.

The ARP Difference in Fastener Technology

These ARP chamfered flat washers are more than just standard hardware; they are meticulously engineered components designed to enhance the reliability and performance of your vehicle. Ideal for engine, transmission, or chassis applications where a secure and precise fit is non-negotiable. The combination of chromoly strength and the chamfered design makes them indispensable for enthusiasts and professionals seeking the best in fastening solutions. Each set includes 10 washers, reflecting Auto Racing Products' commitment to quality and comprehensive solutions for your automotive needs.

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.

ARP 5/16" ID Chamfered Flat Washers: Precision & Strength

Experience the ultimate in fastening precision with Auto Racing Products (ARP) 5/16" ID Chamfered Flat Washers. These specialized chromoly washers are engineered for applications requiring both superior strength and a refined fit. The chamfered edge is a critical design element, allowing for improved seating and reducing stress concentrations, which is vital in high-performance and custom builds. Each washer is treated with a black oxide finish, providing excellent corrosion resistance and a professional appearance.

Advanced Design for Critical Fastening

  • High-Grade Chromoly Steel: Offers exceptional durability and resistance to stretching or deformation under extreme loads.
  • Chamfered Edge: Ensures proper seating and prevents interference, particularly in applications with tight clearances or specific bolt head designs.
  • Corrosion-Resistant Black Oxide: Provides a protective layer against rust and environmental wear, extending component life.
  • Precise Dimensions: Features a 0.313-inch inner diameter, 0.675-inch outer diameter, and 0.12-inch thickness for exact fitment in demanding assemblies.

The ARP Difference in Fastener Technology

These ARP chamfered flat washers are more than just standard hardware; they are meticulously engineered components designed to enhance the reliability and performance of your vehicle. Ideal for engine, transmission, or chassis applications where a secure and precise fit is non-negotiable. The combination of chromoly strength and the chamfered design makes them indispensable for enthusiasts and professionals seeking the best in fastening solutions. Each set includes 10 washers, reflecting Auto Racing Products' commitment to quality and comprehensive solutions for your automotive needs.

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