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SKU: 200-8605
ARP 7/16 inch-20 Hex Nut Kit 200-8605 for Chevy LS Small Block Big Block Ford 351W
ARP 7/16 inch-20 Hex Nut Kit supplies reliable hardware to fasten ARP head studs main studs and rod bolts in demanding engines. This kit works with GM LS series 1997+ Chevy small block 1955+ big block 1965+ and Ford 351W 1969+ engines. Constructed for racing and street applications these nuts hold firm under high boost and RPM.
Key Features
- Thread Size: 7/16-20 threads align with ARP studs for tight seals and strong clamping force
- Material: 8740 chromoly steel heat-treated to 200,000 psi tensile strength handles boosted and high-RPM conditions
- Finish: Black oxide coating prevents corrosion and galling through multiple assembly cycles
- Quantity: 25 nuts per kit supports complete cylinder head or main cap sets on V8 engines
- Dimensions: 11/16 inch hex head with 0.500 inch height enables wrench access and accurate torque
Product Notes
- Pair with ARP thread lube or sealant for precise torque values
- Inspect studs for thread damage prior to nut installation
- Kit ships in protective plastic packaging
Installation Notes
- Professional installation recommended.
- Torque to ARP specifications using calibrated torque wrench in stages
- Compatible with all ARP 7/16-20 studs including Pro Series and 2000 Series
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1997-2023 | Chevrolet | LS Series | LS1 LS6 LQ4 LQ9 LS2 LS3 L92 L99 |
| 1955-2004 | Chevrolet | Small Block | 262 283 305 327 350 400 All |
| 1965-1996 | Chevrolet | Big Block Mark IV | 396 402 427 454 All |
| 1969-1995 | Ford | 351W | All |
| 1986-1995 | Ford | 460 | All |
Why Choose ARP?
- Trusted by NHRA NASCAR and drag racing teams for decades
- Engineered for extreme conditions with consistent quality control
- Precision machining ensures repeatable performance
Frequently Asked Questions
-
Q: Does this kit fit GM LS cylinder heads?
A: Yes perfect match for ARP LS head stud kits on 1997+ LS1 through L99 engines including Camaro Corvette Silverado and trucks -
Q: What material are the nuts made from?
A: Forged 8740 chromoly steel with proprietary heat treatment for strength beyond stock hardware -
Q: What is the warranty and torque spec?
A: ARP lifetime limited warranty against manufacturing defects torque per ARP instructions typically 65-80 ft-lbs dry or with lube
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Protective plastic tray in 6 x 4 x 1 inch box
- Weight: 0.38 lbs
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