Auto Racing Products Stainless Steel Chamfered Flat Washer - 3/8" ID x 3/4" OD (Each) - Polished

SKU: BQDN_400-8507
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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.

Precision Fastening: Auto Racing Products 3/8" Chamfered Stainless Flat Washer

Achieve superior fastening integrity and a refined finish with the Auto Racing Products (ARP) 3/8" ID x 3/4" OD Chamfered Stainless Steel Flat Washer. This special purpose washer is meticulously engineered to provide optimal load distribution and prevent surface damage in high-performance applications. Its chamfered edge design offers improved aesthetics and helps prevent snagging, while the polished stainless steel construction ensures exceptional corrosion resistance and a brilliant, long-lasting shine.

Advanced Features for Performance:

  • High-Grade Polished Stainless Steel: Delivers outstanding resistance to rust and corrosion, coupled with a mirror-like finish for visual appeal.
  • Chamfered Edge Design: Reduces stress concentrations, improves component fit, and provides a cleaner, more professional appearance.
  • Precise 3/8" Inner Diameter: Ensures a perfect fit for 3/8-inch bolts, crucial for maintaining proper torque and clamping force.
  • Generous 3/4" Outer Diameter: Maximizes load distribution across a wider surface area, protecting softer materials from deformation.
  • Optimal 0.12" Thickness: Contributes to robust assembly strength and helps absorb vibration effectively.

Product Specifications:

  • Washer Type: Flat Washer, Special Purpose, Chamfered
  • Inner Diameter (ID): 0.375 inches (3/8")
  • Outer Diameter (OD): 0.75 inches (3/4")
  • Thickness: 0.12 inches
  • Material: Stainless Steel
  • Finish: Polished
  • Quantity: Each
  • Manufacturer Part Number: 400-8507

The ARP Difference in Detail:

For enthusiasts and professionals who demand the best, ARP fasteners represent the pinnacle of quality and engineering. This chamfered flat washer is not merely a spacer; it's a critical component designed to enhance the longevity and reliability of your bolted connections. Its special purpose design and polished finish make it ideal for applications where both function and form are paramount, ensuring your project stands out for all the right reasons.

Explore a curated selection of premium automotive components at 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.

Precision Fastening: Auto Racing Products 3/8" Chamfered Stainless Flat Washer

Achieve superior fastening integrity and a refined finish with the Auto Racing Products (ARP) 3/8" ID x 3/4" OD Chamfered Stainless Steel Flat Washer. This special purpose washer is meticulously engineered to provide optimal load distribution and prevent surface damage in high-performance applications. Its chamfered edge design offers improved aesthetics and helps prevent snagging, while the polished stainless steel construction ensures exceptional corrosion resistance and a brilliant, long-lasting shine.

Advanced Features for Performance:

  • High-Grade Polished Stainless Steel: Delivers outstanding resistance to rust and corrosion, coupled with a mirror-like finish for visual appeal.
  • Chamfered Edge Design: Reduces stress concentrations, improves component fit, and provides a cleaner, more professional appearance.
  • Precise 3/8" Inner Diameter: Ensures a perfect fit for 3/8-inch bolts, crucial for maintaining proper torque and clamping force.
  • Generous 3/4" Outer Diameter: Maximizes load distribution across a wider surface area, protecting softer materials from deformation.
  • Optimal 0.12" Thickness: Contributes to robust assembly strength and helps absorb vibration effectively.

Product Specifications:

  • Washer Type: Flat Washer, Special Purpose, Chamfered
  • Inner Diameter (ID): 0.375 inches (3/8")
  • Outer Diameter (OD): 0.75 inches (3/4")
  • Thickness: 0.12 inches
  • Material: Stainless Steel
  • Finish: Polished
  • Quantity: Each
  • Manufacturer Part Number: 400-8507

The ARP Difference in Detail:

For enthusiasts and professionals who demand the best, ARP fasteners represent the pinnacle of quality and engineering. This chamfered flat washer is not merely a spacer; it's a critical component designed to enhance the longevity and reliability of your bolted connections. Its special purpose design and polished finish make it ideal for applications where both function and form are paramount, ensuring your project stands out for all the right reasons.

Explore a curated selection of premium automotive components at 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.

Precision Fastening: Auto Racing Products 3/8" Chamfered Stainless Flat Washer

Achieve superior fastening integrity and a refined finish with the Auto Racing Products (ARP) 3/8" ID x 3/4" OD Chamfered Stainless Steel Flat Washer. This special purpose washer is meticulously engineered to provide optimal load distribution and prevent surface damage in high-performance applications. Its chamfered edge design offers improved aesthetics and helps prevent snagging, while the polished stainless steel construction ensures exceptional corrosion resistance and a brilliant, long-lasting shine.

Advanced Features for Performance:

  • High-Grade Polished Stainless Steel: Delivers outstanding resistance to rust and corrosion, coupled with a mirror-like finish for visual appeal.
  • Chamfered Edge Design: Reduces stress concentrations, improves component fit, and provides a cleaner, more professional appearance.
  • Precise 3/8" Inner Diameter: Ensures a perfect fit for 3/8-inch bolts, crucial for maintaining proper torque and clamping force.
  • Generous 3/4" Outer Diameter: Maximizes load distribution across a wider surface area, protecting softer materials from deformation.
  • Optimal 0.12" Thickness: Contributes to robust assembly strength and helps absorb vibration effectively.

Product Specifications:

  • Washer Type: Flat Washer, Special Purpose, Chamfered
  • Inner Diameter (ID): 0.375 inches (3/8")
  • Outer Diameter (OD): 0.75 inches (3/4")
  • Thickness: 0.12 inches
  • Material: Stainless Steel
  • Finish: Polished
  • Quantity: Each
  • Manufacturer Part Number: 400-8507

The ARP Difference in Detail:

For enthusiasts and professionals who demand the best, ARP fasteners represent the pinnacle of quality and engineering. This chamfered flat washer is not merely a spacer; it's a critical component designed to enhance the longevity and reliability of your bolted connections. Its special purpose design and polished finish make it ideal for applications where both function and form are paramount, ensuring your project stands out for all the right reasons.

Explore a curated selection of premium automotive components at GGCRACING.

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