SKU: 300-8323 | UPC: 672036012267
ARP 7/16in -20 12pt Nut Kit (Pack of 2) Chevrolet Small Block Big Block LS V8
ARP 7/16-20 12-point nuts deliver precise clamping force for high-performance connecting rod assemblies. These nuts fit ARP Pro Series rod bolts in Chevrolet Small Block 262-400 cid Big Block 396-502 cid and LS1 LS2 LS3 LS7 engines found in Camaro Corvette trucks and more. Engineered steel construction resists fatigue for consistent power transfer in demanding conditions.
Key Features
- Forged 8740 Steel: Heat-treated to 180,000 PSI tensile strength handles extreme cylinder pressures
- 12-Point Head: Enables high-torque application with standard socket in confined rod journal spaces
- Black Oxide Coating: Resists corrosion and galling during repeated assembly disassembly cycles
- Precise Thread Fit: Matches 7/16-20 ARP rod bolts for even load distribution no slop
- Matched Pair Kit: Two identical nuts ensure balanced preload on rod caps
Product Notes
- Inspect rod bolts for wear before installing new nuts
- Torque to ARP specifications after break-in heat cycles
- Store in dry conditions to maintain thread integrity
Installation Notes
- Professional installation recommended.
- Clean threads and apply ARP Ultra-Torque lubricant for accurate torque
- Torque in sequence per ARP specs for your rod bolt kit
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1955-2002 | Chevrolet | Small Block V8 Engines | 262 283 327 350 400 cid |
| 1965-1996 | Chevrolet | Big Block V8 Engines | 396 402 427 454 502 cid |
| 1997-2024 | Chevrolet | LS Series V8 Engines | LS1 LS2 LS3 LS6 LS7 LS9 |
| 1967-2002 | Chevrolet | Camaro | Base RS SS Z28 |
| 1965-2024 | Chevrolet | Corvette | Base Stingray Z06 ZR1 |
| 1970-1996 | Ford | 351 Cleveland | Base Boss |
Why Choose ARP?
- Over 50 years leading high-performance fastener design
- Trusted by NHRA Top Fuel and NASCAR teams
- CNC machined threads for repeatable precision clamping
Frequently Asked Questions
- Q: What ARP rod bolt kits use these 7/16-20 nuts?
A: Compatible with ARP 224-6000 series Small Block Chevy 235-6000 Big Block and 234-5600 LS rod bolts. Confirm thread size on your bolts. - Q: What material and strength rating?
A: 8740 chrome moly steel heat-treated to 2000 F with 180,000 PSI tensile strength and 135,000 PSI yield for high-horsepower builds. - Q: What torque specs apply?
A: Follow ARP instructions for your bolt kit typically 65-80 ft-lbs with Ultra-Torque lube. Re-torque after 100 miles.
Shipping & Handling
- Method: UPS Ground USPS Priority
- Availability: In stock – ships same or next business day
- Packaging: ARP branded protective box
- Weight: 0.10 lbs
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