ARP 5/16-18 x 1.250 Hex Black Oxide Bolt — Performance Fastener

SKU: ARP651-1250
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About ARP ARP (Automotive Racing Products) makes the strongest fasteners ...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 ARP

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.

Reliable Clamping Force with ARP Hex Bolts

For enthusiasts and professional builders alike, the ARP 5/16-18 x 1.250 Hex Black Oxide Bolt represents the gold standard in automotive hardware. Designed for applications where precision and strength are paramount, this bolt provides the consistent clamping force required for high-stress engine components.

Key Features of ARP Hex Hardware

  • High-Strength Alloy: Built to endure extreme heat and vibration without stretching or breaking.
  • Corrosion-Resistant Finish: The black oxide coating ensures long-lasting durability and a clean aesthetic.
  • Standard Hex Head: Designed for easy installation and removal with common hand tools.
  • Exact Specifications: 5/16-18 thread pitch with a 1.250-inch length for precise fitment.

Whether you are performing routine maintenance or a full engine overhaul, using high-quality fasteners is the best way to prevent leaks and mechanical failure. ARP is world-renowned for its commitment to quality, and this hex bolt is no exception. Its robust construction makes it ideal for securing brackets, accessories, and various engine covers. By choosing ARP, you are investing in the longevity of your build and ensuring that your vehicle remains reliable on the track or the street. Equip your project with the best hardware available by browsing the full selection of performance parts at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About ARP

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.

Reliable Clamping Force with ARP Hex Bolts

For enthusiasts and professional builders alike, the ARP 5/16-18 x 1.250 Hex Black Oxide Bolt represents the gold standard in automotive hardware. Designed for applications where precision and strength are paramount, this bolt provides the consistent clamping force required for high-stress engine components.

Key Features of ARP Hex Hardware

  • High-Strength Alloy: Built to endure extreme heat and vibration without stretching or breaking.
  • Corrosion-Resistant Finish: The black oxide coating ensures long-lasting durability and a clean aesthetic.
  • Standard Hex Head: Designed for easy installation and removal with common hand tools.
  • Exact Specifications: 5/16-18 thread pitch with a 1.250-inch length for precise fitment.

Whether you are performing routine maintenance or a full engine overhaul, using high-quality fasteners is the best way to prevent leaks and mechanical failure. ARP is world-renowned for its commitment to quality, and this hex bolt is no exception. Its robust construction makes it ideal for securing brackets, accessories, and various engine covers. By choosing ARP, you are investing in the longevity of your build and ensuring that your vehicle remains reliable on the track or the street. Equip your project with the best hardware available by browsing the full selection of performance parts at GGCRACING.

Product Details

Product Description

About ARP

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.

Reliable Clamping Force with ARP Hex Bolts

For enthusiasts and professional builders alike, the ARP 5/16-18 x 1.250 Hex Black Oxide Bolt represents the gold standard in automotive hardware. Designed for applications where precision and strength are paramount, this bolt provides the consistent clamping force required for high-stress engine components.

Key Features of ARP Hex Hardware

  • High-Strength Alloy: Built to endure extreme heat and vibration without stretching or breaking.
  • Corrosion-Resistant Finish: The black oxide coating ensures long-lasting durability and a clean aesthetic.
  • Standard Hex Head: Designed for easy installation and removal with common hand tools.
  • Exact Specifications: 5/16-18 thread pitch with a 1.250-inch length for precise fitment.

Whether you are performing routine maintenance or a full engine overhaul, using high-quality fasteners is the best way to prevent leaks and mechanical failure. ARP is world-renowned for its commitment to quality, and this hex bolt is no exception. Its robust construction makes it ideal for securing brackets, accessories, and various engine covers. By choosing ARP, you are investing in the longevity of your build and ensuring that your vehicle remains reliable on the track or the street. Equip your project with the best hardware available by browsing the full selection of performance parts at GGCRACING.

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