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SKU: 641-1000 | UPC: 672036016999
ARP 5/16-18 x 1.000 12pt Black Oxide Bolts
ARP 5/16-18 x 1.000 12pt Black Oxide Bolts provide consistent clamp load and durability for engine assembly in performance vehicles. These fasteners suit various automotive applications from classic muscle cars to modern race engines. Built for reliable performance under high stress these bolts support demanding street strip and track use.
Key Features
- Genuine ARP Fasteners: Deliver dependable clamping force in high-vibration engine environments
- Precision-Rolled Threads: Ensure consistent thread engagement and accurate repeatable torque
- 12-Point Head Design: Allows secure wrench grip for higher torque application without rounding
- Black Oxide Finish: Resists corrosion for long-lasting performance in harsh conditions
- High-Tensile Steel Construction: Forged from 8740 chrome moly alloy rated 180000-200000 psi tensile strength
Product Notes
- Clean all threads before installation and apply ARP Ultra-Torque lubricant as directed
- Re-torque fasteners after initial engine heat cycles to maintain clamp load
- Store in dry conditions to preserve black oxide finish integrity
Installation Notes
- Professional installation recommended.
- Torque to ARP specified values using proper sequence for your engine application
- Fits standard 5/16-18 threaded holes in engine blocks pans and accessories
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | Various | Performance Engines | Street/Strip/Track Builds |
| 1955-2023 | Chevrolet | Small Block V8 | Oil Pan/Bellhousing |
| 1962-2023 | Ford | Small Block V8 | Valve Cover/Flexplate |
| 1986-2023 | GM | LS Series V8 | Accessory Hardware |
Why Choose ARP?
- ARP fasteners power wins in NHRA IHRA and other pro racing series
- Every bolt undergoes rigorous testing for tensile and fatigue strength
- Precision manufacturing guarantees exact dimensions and thread accuracy
Frequently Asked Questions
-
Q: What engine applications do these bolts fit?
A: These 5/16-18 x 1.000 bolts work in oil pans valve covers bellhousings flexplates and torque converters across Chevy Ford GM and other performance engines verify your hole size and torque specs -
Q: What material and finish do ARP 641-1000 bolts use?
A: Forged from 8740 chrome moly steel with 180000-200000 psi tensile strength plus black oxide coating for rust protection and reduced friction -
Q: What warranty covers these ARP bolts?
A: ARP offers a one-year unlimited mileage warranty when installed torqued and maintained per instructions improper use voids coverage
Shipping & Handling
- Method: UPS Ground or USPS Priority Mail
- Availability: In stock - ships same or next business day
- Packaging: Protective plastic sleeve in small cardboard box
- Weight: 0.1 lbs
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