ARP Hex Bolt Kits

3/8˝-16 SAE Bolt Kit for Automotive, Marine, and Trailer Applications

Part #: 652-1500

Overview

The ARP Hex Bolt Kits are premium-quality fasteners designed to meet the demanding needs of automotive enthusiasts, marine professionals, and trailer builders. Crafted from high-strength chromoly steel and heat-treated to ensure durability and reliability, these bolts provide a robust solution for securing critical components in various applications. Whether you're assembling engine parts, mounting accessories, or performing custom modifications, these ARP bolts deliver peace of mind with their superior tensile strength and precision engineering.

Ideal for those who require dependable fasteners that can withstand high stress and harsh environments, the ARP Hex Bolt Kits are engineered to support your vehicle's performance and safety. Their black oxide finish not only enhances corrosion resistance but also offers a sleek, professional appearance in your engine bay or equipment setup. With these bolts, you can confidently tackle projects that demand strength, consistency, and quality.

Key Features

Designed with performance and durability in mind, the ARP Hex Bolt Kits feature several technical advantages that set them apart from standard hardware:

• Constructed from heat-treated 8740 chromoly steel, providing exceptional strength and toughness for demanding applications.
• Nominal tensile strength of 180,000 psi, offering a significant safety margin over conventional Grade 8 hardware, ensuring your components stay secure under high loads.
• 3/8˝-16 SAE thread size with a flanged hex head, facilitating easy installation and removal with standard tools while distributing load evenly across the mounting surface.
• Underhead length of 1.500 inches, optimized for a variety of mounting points and assemblies.
• Black oxide finish enhances corrosion resistance and provides a professional, finished look suitable for both performance and restoration projects.
• Precision-machined for consistent thread engagement and fitment, reducing the risk of stripping or cross-threading.
• Versatile application range, suitable for automotive, boat, trailer, and other heavy-duty fastening needs where high strength fasteners are required.
• Manufactured by ARP, a trusted name in high-performance fasteners with decades of experience and a reputation for quality and reliability.

Construction & Design

The ARP Hex Bolt Kits are meticulously engineered from 8740 chromoly steel, a material renowned for its excellent strength-to-weight ratio and toughness. The bolts undergo a specialized heat-treatment process that enhances their tensile properties, ensuring they can withstand extreme stresses without deformation or failure. The black oxide coating not only provides corrosion resistance but also reduces glare and adds a professional aesthetic to your assembly.

The flanged hex head design allows for easy wrench engagement, enabling secure tightening and removal. The 3/8˝-16 thread size is a common standard in automotive and industrial applications, making these bolts highly versatile. The underhead length of 1.500 inches ensures compatibility with a wide range of mounting configurations, providing flexibility for various projects.

Performance & Reliability

With a tensile strength of 180,000 psi, these ARP bolts are engineered to support high-stress applications, giving you confidence that your assembly will remain secure under demanding conditions. Their high-quality construction minimizes the risk of fatigue and failure, making them suitable for critical components that require dependable fastening. Whether used in engine builds, suspension setups, or trailer assemblies, these bolts help support your vehicle's performance and safety.

Installation & Fitment

Installing the ARP Hex Bolt Kits is straightforward, thanks to their standard SAE thread size and precise manufacturing. They are designed for bolt-on installation, requiring only basic hand tools such as a wrench or socket set. No special modifications, cutting, or drilling are necessary. Proper torque specifications should be followed to ensure optimal clamping force and safety. These bolts are compatible with standard 3/8˝-16 threaded holes and are suitable for a wide range of automotive and industrial applications.

• Easy to install with common hand tools
• No cutting, drilling, or special tuning required
• Ideal for high-stress fastening in automotive, marine, and trailer projects

What's Included

• Complete set of ARP Hex Bolts with 3/8˝-16 SAE threads
• Black oxide finish for corrosion resistance
• Quality packaging to prevent damage during shipping

Ideal For

These ARP Hex Bolt Kits are perfect for automotive enthusiasts, professional mechanics, boat builders, and trailer manufacturers who demand high-strength fasteners for critical applications. They are suitable for engine assembly, mounting brackets, suspension components, and other high-stress areas where reliability and safety are paramount.