SKU: 300-8333 | UPC: 672036012359
ARP 7/16inch-20 12pt Nut Kit (Pack of 10) for 1955+ Chevy Small Block V8 and Ford Windsor
ARP 7/16″-20 12-point nut kit contains 10 premium nuts for main studs and connecting rod bolts in 1955+ Chevrolet Small Block V8 engines like 350ci, plus Ford 289/302/351W V8s. These nuts provide consistent clamp load and resist fatigue in street and race builds. Engineered for ARP studs to handle high torque without slippage.
Key Features
- 12-Point Head: Ensures positive wrench grip for maximum torque transfer without stripping or cam-out
- 7/16″-20 UNF Thread: Precision-machined to mate perfectly with ARP main and rod studs for leak-free sealing
- Alloy Steel Construction: Forged for high tensile strength to withstand extreme cylinder pressures and heat cycles
- Black Oxide Coating: Resists corrosion and galling while allowing accurate dry torque values with ARP lubes
- Set of 10 Nuts: Matches quantity needed for 5 main caps or 10 rods with extras for builds or spares
Product Notes
- Use only with ARP-compatible 7/16″-20 studs for best results
- Re-check torque after engine break-in and heat cycles
- Stored in anti-corrosion packaging for immediate use
Installation Notes
- Professional installation recommended.
- Apply ARP Ultra-Torque fastener lubricant to threads and under nut faces
- Torque in ARP-specified sequence to 65-75 ft-lbs depending on application
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1955-1986 | Chevrolet | Corvette | Small Block V8 |
| 1967-1981 | Chevrolet | Camaro | Small Block V8 |
| 1964-1977 | Chevrolet | Chevelle | Small Block V8 |
| 1960-1986 | Chevrolet | C10 Pickup | Small Block V8 |
| 1962-1973 | Ford | Mustang | 289/302/351W |
| 1969-1996 | Ford | F-100 | 302/351W |
| 1969-1985 | Ford | Mustang | 351W |
Why Choose ARP?
- Trusted by NHRA and NASCAR teams for decades of proven performance
- Every nut tested for precise dimensions and load capacity
- Made in USA with aerospace-grade manufacturing processes
Frequently Asked Questions
- Q: Will these nuts fit my Chevy 350 main studs?
A: Yes, direct fit for ARP 7/16″-20 main stud kits like 208-4301 on 1955+ Small Block V8s with 2 or 4-bolt mains. - Q: What is the wrench size for these nuts?
A: 5/8-inch 12-point socket or box-end wrench for secure engagement. - Q: What torque specs should I use?
A: Follow ARP instructions, typically 70 ft-lbs with moly lube or Ultra-Torque for mains and rods.
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock – ships same or next business day
- Packaging: Original ARP box, 6 x 4 x 1 inches
- Weight: 0.25 lbs
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