ARP Hex Bolt Kits

5/16˝-24 SAE Bolt Kit for Automotive and Marine Applications

Part #: 751-4250

Overview

The ARP Hex Bolt Kits are premium-quality fasteners designed for enthusiasts and professionals seeking reliable, high-strength hardware for a wide range of automotive, marine, and trailer applications. Crafted from top-grade materials and engineered for durability, these bolts provide a secure and lasting connection in demanding environments. Whether you're assembling engine components, mounting accessories, or performing custom modifications, ARP's hex bolt kits deliver peace of mind with their superior tensile strength and precision manufacturing.

Ideal for those who demand excellence in their builds, these bolts are perfect for street, off-road, and performance applications where strength, safety, and reliability are paramount. With ARP's reputation for quality and innovation, you can trust these fasteners to support your vehicle's performance and longevity.

Key Features

ARP Hex Bolt Kits are engineered with a focus on strength, durability, and ease of use. The key features include:

• Manufactured from heat-treated 8740 chromoly steel, offering exceptional tensile strength and toughness for high-stress applications.
• Black oxide finish provides corrosion resistance and a sleek appearance, suitable for both functional and aesthetic purposes.
• Nominally rated at 180,000 psi tensile strength, providing a significant safety margin over standard Grade 8 hardware, ensuring your components stay secure under extreme conditions.
• Designed with a flanged hex head for improved torque application and a secure fit during installation.
• Underhead length of 4.250 inches, suitable for a variety of mounting and assembly needs.
• Precision-machined threads ensure smooth installation and optimal engagement, reducing the risk of stripping or cross-threading.
• Versatile application range, including automotive, boat, and trailer assembly, making these bolts a reliable choice for multiple projects.
• Easy to install with standard tools, providing a secure, high-quality fastening solution without the need for specialized equipment.
• Manufactured to strict quality standards, ensuring consistent performance and reliability in every kit.

Construction & Design

The ARP Hex Bolt Kits feature a robust construction utilizing heat-treated 8740 chromoly steel, renowned for its strength and fatigue resistance. The black oxide finish not only enhances corrosion resistance but also provides a professional, finished look. The flanged hex head design allows for better torque application and reduces the likelihood of head stripping during installation. The precise machining of threads ensures a smooth, secure fit, minimizing installation effort and maximizing holding power. These bolts are engineered to withstand the rigors of high-performance environments, making them a dependable choice for demanding applications.

Installation & Fitment

The ARP Hex Bolt Kits are designed for straightforward, bolt-on installation. They utilize standard 5/16˝-24 SAE threads, compatible with a wide range of applications. No special tools or modifications are required beyond typical hand or power tools. Ensure proper torque specifications are followed during installation to achieve optimal clamping force and prevent over-tightening. These bolts are suitable for use in various automotive and marine assemblies where high-strength fasteners are needed to ensure safety and performance.

• Easy to install with common hand tools
• No cutting, drilling, or special modifications required
• Designed for high-stress, high-performance applications

What's Included

• Complete set of ARP Hex Bolts, 5/16˝-24 SAE thread, 4.250-inch underhead length
• Premium-grade chromoly steel construction
• Black oxide finish for corrosion resistance

Ideal For

• Automotive enthusiasts performing engine builds or modifications
• Marine applications requiring high-strength fasteners
• Trailer assembly and repair
• Any project demanding reliable, durable fasteners with superior tensile strength