ARP 7/16 inch-20 Hex Nut Kit

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