ARP Nut Kits

3/8˝-16 Stainless Steel Nut Kit

Part #: 400-8664

Overview

The ARP Nut Kits are precision-engineered fasteners designed for high-performance automotive applications. Crafted from aerospace-quality materials, these nuts provide exceptional strength, durability, and reliability under demanding conditions. Whether you're building a race car, restoring a classic, or upgrading your vehicle for spirited driving, these nuts ensure a secure and lasting fit.

Ideal for enthusiasts who require top-tier hardware, ARP Nut Kits help support increased horsepower and torque by maintaining a tight, vibration-resistant connection. Their high tensile strength and quality construction make them suitable for both street and track use, providing peace of mind during intense driving sessions or demanding off-road adventures.

Key Features

ARP Nut Kits are built with the serious automotive enthusiast in mind, offering a combination of strength, precision, and ease of use. Here are some of the key features that set these nuts apart:

• Material Excellence: Made from aerospace-quality stainless steel, these nuts resist corrosion and maintain their integrity over time, even in harsh environments.
• High Tensile Strength: Rated at 180,000 psi tensile strength, these nuts provide superior holding power compared to standard hardware, ensuring your components stay securely fastened under high loads.
• 12-Point Style Heads: The 12-point design allows for easier installation and removal in tight spaces, providing better access and torque application.
• Self-Locking Design: Equipped with nylon inserts, these nuts prevent loosening due to vibration, maintaining a secure connection during aggressive driving or off-road conditions.
• Polished Finish: The polished surface not only enhances the aesthetic appeal but also adds an extra layer of corrosion resistance.
• Compatibility: Designed for 3/8˝-16 threaded applications, suitable for a wide range of fastener needs in automotive builds.

Construction & Design

The ARP Nut Kits feature a robust construction utilizing aerospace-grade stainless steel, which offers excellent strength-to-weight ratio and corrosion resistance. The 12-point head design ensures a secure grip and ease of installation in confined spaces, making them versatile for various engine and chassis applications. The nylon insert provides a self-locking feature that prevents loosening due to vibrations, a critical aspect for high-performance and racing environments. The polished finish not only improves visual appeal but also helps protect against rust and corrosion, ensuring long-lasting performance even in challenging conditions.

Installation & Fitment

Installing the ARP Nut Kits is straightforward and requires no special tools beyond standard wrenches. The nuts are designed to thread onto 3/8˝-16 bolts or studs, providing a secure fit. Due to their precise manufacturing and self-locking nylon inserts, no additional lock washers or thread-locking compounds are necessary. These nuts are ideal for use in engine assemblies, suspension components, and other critical fastener points where strength and security are paramount. No cutting, drilling, or tuning is required, making them a direct bolt-on upgrade for compatible applications.

• Simple, bolt-on installation with standard hand tools
• Designed for 3/8˝-16 threaded fasteners
• No additional locking hardware needed

What's Included

• Complete set of stainless steel 3/8˝-16 nuts with nylon inserts

Ideal For

• Performance automotive builds
• Racing and track applications
• High-stress engine and chassis assemblies
• Restorations requiring high-quality fasteners