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SKU: 200-8606
ARP 7/16 inch-20 Hex Nut Kit for Chevrolet Small Block and LS Engines (1955-2023)
ARP 7/16 inch-20 hex nut kit (SKU 200-8606) includes 50 precision nuts for connecting rods main studs and cylinder heads in high-performance Chevrolet small block V8 and LS engines. This kit provides consistent clamping force and vibration resistance for racing or street applications under extreme conditions. Engine builders rely on ARP nuts for dependable performance in boosted or nitrous setups across 1955-2023 models.
Key Features
- Thread Size: 7/16 inch-20 fine thread matches ARP rod bolts and main studs for exact fit and smooth engagement
- Material: Forged 8740 chromoly steel resists fatigue and stretching at high horsepower levels
- Quantity: 50 nuts per kit provides complete sets for multiple rods or heads in rebuilds
- Finish: Black oxide coating prevents corrosion and galling during repeated installations
- Heat Treatment: Processed to ARP 200000 PSI tensile strength specs for endurance in boosted or nitrous setups
Product Notes
- Verify thread compatibility with existing ARP bolts before use
- Apply ARP Ultra-Torque lubricant for accurate torque values
- Kit ships in protective packaging to prevent damage
Installation Notes
- Professional installation recommended.
- Torque to ARP specifications using calibrated wrench and angle method
- Compatible with all ARP 7/16-20 rod bolts and head studs
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1955-2002 | Chevrolet | Small Block V8 | 262-400 cid |
| 1997-2023 | Chevrolet | LS Series V8 | LS1 LS6 LQ4 LQ9 |
| 1965-1996 | Chevrolet | Big Block V8 | 396-454 cid |
| 1967-2002 | Chevrolet | Camaro | V8 Models |
| 1962-2013 | Chevrolet | Corvette | C2-C7 V8 |
| 1960-1987 | Chevrolet | Chevy II Nova | V8 Models |
| 1973-1991 | Chevrolet | Camaro | Z28 SS |
Why Choose ARP?
- Proven in NHRA Top Fuel and NASCAR for decades of reliability
- Every nut exceeds SAE ARP standards for strength and consistency
- Made in USA with tight tolerances for zero defects
Frequently Asked Questions
-
Q: Does this kit fit LS1 connecting rods?
A: Yes ARP 200-8606 nuts pair perfectly with 7/16-20 ARP rod bolts on GM LS1 LS6 and Gen III/IV engines -
Q: What material are the nuts made from?
A: Forged 8740 chromoly steel heat treated to 200000 PSI with black oxide finish for durability -
Q: Is there a warranty?
A: ARP offers a limited lifetime warranty against manufacturing defects when installed and torqued correctly
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: Special order - ships within 1-3 business days
- Packaging: Compact box 5 x 4 x 1 inches
- Weight: 0.8 lbs
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ARP (Automotive Racing Products) is the world’s premier manufacturer of high-strength engine and driveline fasteners—head studs and bolts, main studs, rod bolts, and more—engineered and manufactured in-house from start to finish for race-proven reliability. With vertically integrated processes that include cold heading, machining, heat-treating, thread rolling after heat treat, and rigorous QA, ARP maintains aerospace-level certifications (ISO 9001 and AS9100) and validates every part for repeatable clamp load and fatigue resistance. Signature alloys such as 8740 chromoly, ARP2000, L19, and Custom Age 625+ deliver ultimate tensile strengths up to the super-alloy range, while ARP Ultra-Torque fastener assembly lubricant helps achieve consistent pre-load during installation. From street performance builds to professional motorsport programs, ARP fasteners provide precise fitment, superior metallurgy, and the durability needed to keep engines together at elevated cylinder pressures and...
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