Auto Racing Products 3/8 ID Flat Washer .675 OD — High-Strength Chromoly Fasteners

SKU: BQDN_200-8556
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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.

Watch in action

Reliable Chromoly Flat Washers

When every detail counts, choose Auto Racing Products 3/8 ID flat washers to secure your critical engine components. These washers are manufactured from premium chromoly steel, offering significantly higher tensile strength than standard off-the-shelf hardware. Engineered to withstand the rigors of competitive racing, they provide a stable and consistent clamping surface for your bolts.

Key Features and Benefits

  • Inner Diameter: 0.375 inches
  • Outer Diameter: 0.675 inches
  • Thickness: 0.12 inches
  • Material: Heat-Treated Chromoly
  • Finish: Corrosion-Resistant Black Oxide
  • Quantity: Set of 10

These washers are specifically designed to distribute clamping force evenly, preventing damage to delicate surfaces and ensuring your fasteners stay tight under extreme vibration and thermal expansion. The black oxide finish not only provides a clean, professional look but also offers essential protection against rust and oxidation in demanding environments. Perfect for a wide range of automotive applications, these washers are a must-have for any mechanic or racer looking to improve the integrity of their engine assembly. Experience the quality difference with GGCRACING.

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.

Watch in action

Reliable Chromoly Flat Washers

When every detail counts, choose Auto Racing Products 3/8 ID flat washers to secure your critical engine components. These washers are manufactured from premium chromoly steel, offering significantly higher tensile strength than standard off-the-shelf hardware. Engineered to withstand the rigors of competitive racing, they provide a stable and consistent clamping surface for your bolts.

Key Features and Benefits

  • Inner Diameter: 0.375 inches
  • Outer Diameter: 0.675 inches
  • Thickness: 0.12 inches
  • Material: Heat-Treated Chromoly
  • Finish: Corrosion-Resistant Black Oxide
  • Quantity: Set of 10

These washers are specifically designed to distribute clamping force evenly, preventing damage to delicate surfaces and ensuring your fasteners stay tight under extreme vibration and thermal expansion. The black oxide finish not only provides a clean, professional look but also offers essential protection against rust and oxidation in demanding environments. Perfect for a wide range of automotive applications, these washers are a must-have for any mechanic or racer looking to improve the integrity of their engine assembly. Experience the quality difference with GGCRACING.

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.

Watch in action

Reliable Chromoly Flat Washers

When every detail counts, choose Auto Racing Products 3/8 ID flat washers to secure your critical engine components. These washers are manufactured from premium chromoly steel, offering significantly higher tensile strength than standard off-the-shelf hardware. Engineered to withstand the rigors of competitive racing, they provide a stable and consistent clamping surface for your bolts.

Key Features and Benefits

  • Inner Diameter: 0.375 inches
  • Outer Diameter: 0.675 inches
  • Thickness: 0.12 inches
  • Material: Heat-Treated Chromoly
  • Finish: Corrosion-Resistant Black Oxide
  • Quantity: Set of 10

These washers are specifically designed to distribute clamping force evenly, preventing damage to delicate surfaces and ensuring your fasteners stay tight under extreme vibration and thermal expansion. The black oxide finish not only provides a clean, professional look but also offers essential protection against rust and oxidation in demanding environments. Perfect for a wide range of automotive applications, these washers are a must-have for any mechanic or racer looking to improve the integrity of their engine assembly. Experience the quality difference with GGCRACING.

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