ARP 7/16inch-20 12pt Nut Kit (Pack of 10)

This ARP performance fastener, stud, bolt, tool, or assembly is the 7/16inch-20 12pt Nut Kit (Pack of 10). 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

• 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.
• 12-Point Head: Ensures positive wrench grip for maximum torque transfer without stripping or cam-out.
• Black Oxide Coating: Resists corrosion and galling while allowing accurate dry torque values with ARP lubes.
• Every nut tested for precise dimensions and load capacity.
• 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.

Fitment

Specifications

What’s Included

One new ARP hardware kits – other 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.

Important Disclosures

• California Proposition 65 warning applies. Review the current manufacturer warning before handling or installation.

Related Parts

• Shop all ARP products
• ARP .875in OD x 7/16in ID Insert Washers (10 pack)
• ARP 01-06 6.6L GM Duramax Diesel Flywheel Bolt Kit
• ARP 01-10 6.6L GM Duramax Diesel Flexplate Bolt Kit

Frequently Asked Questions

How do I confirm the 7/16inch-20 12pt Nut Kit (Pack of 10) 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 300-8333, 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.