ARP 7/16-20 12pt Nut 9/16 Wrench

This ARP performance fastener, stud, bolt, tool, or assembly is the 7/16-20 12pt Nut 9/16 Wrench. Confirm the exact engine or vehicle application, thread size, length, material, strength series, included quantity, installation lubricant, tightening sequence, and current ARP torque specification before ordering.

Key Features

• Wrench Size: 9/16-inch hex allows use with common tools while delivering high torque capacity over 200,000 psi tensile strength.
• Material: Forged from ARP 8740 chrome moly alloy for superior fatigue resistance in boosted or nitrous applications.
• 12-Point Design: Provides 12 contact points for faster installation in confined engine bays and reduced rounding risk.
• Finish: Black oxide coating resists corrosion and galling during repeated assembly and disassembly.
• Precision CNC machined threads ensure leak-free high-pressure seals.
• Forged 8740 alloy with 200,000+ psi tensile strength and 170,000+ psi yield for extreme power levels.

Fitment

Specifications

What’s Included

One new ARP hardware – single in the exact configuration and quantity identified by this listing. Brackets, wiring, air lines, fittings, switches, fasteners, fitting kits, fluids, covers, and accessories are included only when expressly stated for this exact part.

About ARP

Automotive Racing Products manufactures high-performance studs, bolts, nuts, washers, wheel hardware, assembly tools, and installation lubricants for engine, drivetrain, chassis, and racing applications. Thread dimensions, material, preload method, lubricant, torque, and included quantity remain exact-part specific.

Related Parts

• Shop all ARP products
• ARP 1/2 x 6.5in Long Broached Individual Stud
• ARP 1/2in -20 12pt Nut (Single Nut)
• ARP 1/2in x 5.250in Long Broached Allen Head Stud (Single Stud)

Frequently Asked Questions

How do I confirm the 7/16-20 12pt Nut 9/16 Wrench fits my application?
Match the exact engine family or vehicle, component location, thread diameter and pitch, under-head length, material, strength series, and every current ARP application note.

Can I reuse the factory torque value with this ARP hardware?
Not automatically. Use ARP’s current instructions for the exact part, material, lubricant, tightening sequence, and preload method. Factory torque values may be based on different hardware and friction.

What is included with this ARP kit?
Only the studs, bolts, nuts, washers, lubricant, and tools expressly listed for this exact part number are included. Verify the required quantity before disassembly.

Installation Instructions

1. Confirm ARP part number APN12-2, the complete application, and every required supporting component before beginning work.
2. Clean and inspect all mating threads and components, then verify thread engagement, length, washers, nuts, lubricant, and required preparation before assembly.
3. Follow ARP’s current tightening sequence, lubricant instructions, torque or stretch method, and any retorque procedure for this exact part.
4. Verify clearance, preload, fastener seating, and normal component operation before returning the vehicle or engine to service.