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SKU: AR5.250-1LB
ARP 1/2in x 5.250in Long Broached Allen Head Stud for 1955-2002 Chevrolet Small Block Engines (Single Stud)
ARP 1/2in x 5.250in long broached Allen head stud delivers precise clamping force for cylinder head or main cap applications in Chevrolet Small Block V8 engines. This single stud fits 1955-2002 Chevy 262-400ci engines found in Camaro, Corvette, Chevelle, Nova, trucks, and more. Engine builders rely on its strength for boosted, nitrous, or high-rpm setups.
Key Features
- ARP2000 Alloy Construction: Forged from proprietary steel with 220,000 psi tensile strength and 155,000 psi yield for repeated high-load use
- 1/2-20 Thread x 5.250in Length: Exact dimensions match OEM and aftermarket head/main stud requirements in SBC builds
- Broached Allen Head: 5/16in hex socket allows accurate wrenching without damaging threads during install or removal
- Rolled Threads: Increases fatigue resistance by 1000% over cut threads for long-term durability under vibration
- Black Oxide Finish: Resists corrosion and galling while providing smooth thread engagement
Product Notes
- Sold individually for kit replacement or custom engine projects
- Confirm under-head length and grip for your cylinder head/main cap
- Box dimensions 6 x 2 x 1 inches weight 0.25 lbs
Installation Notes
- Professional installation recommended.
- Apply ARP Ultra-Torque assembly lube to threads and under nut
- Compatible with 12-point ARP nuts torque to 110 ft-lbs dry or per ARP instructions
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1955-1982 | Chevrolet | Corvette | C1 C2 C3 |
| 1964-1981 | Chevrolet | Chevelle | SS |
| 1967-1969 | Chevrolet | Camaro | SS RS Z28 |
| 1962-1979 | Chevrolet | Nova | All |
| 1960-1987 | Chevrolet | C/K Pickup | 1500 2500 3500 |
| 1982-1992 | Chevrolet | Camaro | Z28 IROC |
| 1986-1991 | Chevrolet | Corvette | C4 |
Why Choose ARP?
- Used in NHRA Pro Stock and Top Fuel dragsters for proven reliability
- Precision CNC-machined for consistent thread accuracy and fit
- Backed by ARP limited lifetime warranty against stud breakage
Frequently Asked Questions
-
Q: What Chevy Small Block engines use this 5.250in stud length?
A: Common in 283-400ci SBC with aftermarket heads like Edelbrock Performer RPM or AFR requiring extra length or tall decks -
Q: What is the material and strength rating?
A: Heat-treated ARP2000 chrome moly alloy with 220,000 psi ultimate tensile strength and rolled threads -
Q: Does ARP provide torque specs or warranty?
A: Yes torque charts included ARP offers lifetime warranty on breakage when installed per instructions
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Protective plastic sleeve in 6x2x1 inch box
- Weight: 0.25 lbs
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