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SKU: 612-1000 | UPC: 672036015695
ARP 5/16 Inch -18 x 1.000 12pt SS Bolts (5/pkg)
These ARP 5/16"-18 x 1.000" 12-point stainless steel bolts come in packs of 5 for fastening engine components in performance vehicles. They secure valve covers, oil pans, headers, and intakes with reliable clamp load under high stress. Rolled threads ensure accurate torque and fatigue resistance for race or street use.
Key Features
- Genuine ARP Fasteners: Built for motorsports with consistent clamping in demanding conditions
- Rolled Threads: Greater fatigue strength and smoother engagement than cut threads
- 12-Point Head: Secure tool fit reduces rounding and improves leverage
- Stainless Steel Build: Resists rust and chemicals for lasting appearance and function
- Pack of 5: Exact quantity for typical jobs like valve cover or header installs
Product Notes
- Thread size 5/16-18, length 1.000 inch, MPN 612-1000
- Apply ARP Ultra-Torque lubricant for optimal performance
- Lightweight design suits any performance build
Installation Notes
- Professional installation recommended.
- Clean threads and holes, torque per ARP specs (typically 25-30 ft-lbs dry)
- Uses 1/2-inch 12-point socket. recheck after heat cycles
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | All | All | 5/16-18 Bolt Applications |
Why Choose ARP?
- Trusted in NHRA, NASCAR, and drag racing for decades
- 170,000 PSI tensile strength exceeds OEM fasteners
- Precision machining for repeatable results every time
Frequently Asked Questions
-
Q: What vehicles or applications use these bolts?
A: Fits any 5/16-18 x 1-inch threaded hole including LS valve covers, small block Chevy intakes, Ford header bolts, and custom setups. -
Q: What material and finish?
A: Type 316 stainless steel with rolled threads and bright polish for corrosion resistance and clean look. -
Q: What torque specs and warranty?
A: Follow ARP guidelines with lube. backed by ARP limited warranty against defects when properly installed.
Shipping & Handling
- Method: UPS Ground or USPS
- Availability: In stock - ships same or next business day
- Packaging: Poly bag in 4 x 2.5 x 0.75 inch box
- Weight: 0.05 lbs
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