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SKU: 300-8304
ARP 1/2in -20 12pt Nut (Single Nut) for Chevy LS Small Block Ford 302/351W
ARP 300-8304 is a single high-strength 12-point nut with 1/2"-20 threads designed for connecting rod bolt assemblies in performance engines. It fits Chevrolet LS series, Small Block V8, and Ford 302/351W engines equipped with ARP rod bolt kits. Engineered for precise torque and lasting clamp load under high-rpm stress.
Key Features
- ARP2000 Alloy Steel: 8740 chromoly construction with 220,000 PSI tensile strength fights fatigue in boosted and high-horsepower builds
- 12-Point Head Design: Provides secure wrench engagement for maximum torque without stripping even after repeated use
- Precision Rolled Threads: Matches ARP rod bolts perfectly for even load distribution and leak-free sealing
- Black Oxide Finish: Shields against rust and galling in oily engine environments
- Single Nut Packaging: Allows exact replacement or custom builds without buying full kits
Product Notes
- Confirm rod bolt thread size is 1/2"-20 before ordering
- Torque check after 500 miles or first heat cycle for optimal retention
- Packaged in anti-static bag for protection during shipping
Installation Notes
- Professional installation recommended.
- Apply ARP Ultra-Torque lubricant on threads and under nut
- Torque to ARP specs: 65-75 ft-lbs dry or 55-65 ft-lbs lubricated with 12-pt socket
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1997-2004 | Chevrolet | Corvette | Base LS1 |
| 1998-2002 | Chevrolet | Camaro | Z28 LS1 |
| 1969-2002 | Chevrolet | Camaro | SS Small Block |
| 1999-2007 | Chevrolet | Silverado 1500 | LS Vortec |
| 1986-1995 | Ford | Mustang | GT 5.0 |
| 1969-1996 | Ford | F-150 | 302 V8 |
| 1969-1995 | Ford | Mustang | Boss 351W |
Why Choose ARP?
- Fasteners proven in NHRA Pro Stock and NASCAR racing
- Exact heat treatment and thread rolling for every part
- Decades of engineering focused on engine builders needs
Frequently Asked Questions
-
Q: Will this nut work on my stock or aftermarket rod bolts?
A: Fits any 1/2"-20 rod bolts including ARP kits for LS SBC and Ford small blocks. Measure your bolts to confirm thread pitch. -
Q: What material and strength rating does it have?
A: Made from ARP2000 8740 chrome-moly steel with 220,000 PSI tensile strength and 180,000 PSI yield for high-boost durability. -
Q: Can ARP nuts be reused after engine disassembly?
A: Yes ARP 12-point nuts support multiple reuses if threads remain undamaged. Inspect and replace if galling occurs.
Shipping & Handling
- Method: USPS First Class or UPS Ground
- Availability: In stock - ships same or next business day
- Packaging: Protective padded envelope 4 x 3 x 0.5 inches
- Weight: 0.5 oz
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