ARP Hex Bolt Kits

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

Part #: 652-1000

Overview

The ARP Hex Bolt Kits are high-quality fasteners designed to provide reliable, durable, and strong connections for a wide range of automotive, marine, and trailer applications. Crafted from premium materials and engineered for performance, these bolts are ideal for enthusiasts and professionals seeking to ensure safety and longevity in their assemblies. Whether you're assembling engine components, securing trailer parts, or performing custom modifications, these ARP bolts deliver peace of mind with their superior strength and precision manufacturing.

Designed for those who demand the best, ARP Hex Bolt Kits help support increased safety margins and enhanced performance in demanding environments. Their robust construction and heat-treated properties make them suitable for high-stress applications, ensuring your projects maintain integrity over time. These bolts are perfect for daily drivers, off-road enthusiasts, and marine operators who require dependable fasteners that can withstand harsh conditions and heavy loads.

Key Features

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

• Manufactured from ARP's proprietary 8740 chromoly steel, these bolts offer exceptional tensile strength, rated at 180,000 psi, providing a significant safety margin over standard Grade 8 hardware.
• The black oxide finish not only enhances corrosion resistance but also gives a sleek, professional appearance suitable for visible engine bays and custom builds.
• Designed with a flanged hex head, these bolts facilitate easy installation and removal with standard tools, while providing a secure, even load distribution.
• The 1.000-inch underhead length ensures proper engagement and clamping force for a variety of applications, from engine assembly to structural mounting.
• Precision heat treatment and manufacturing processes ensure consistent quality, fitment, and performance across all kits.
• Versatile thread size of 3/8˝-16 makes these bolts compatible with numerous standard fastener applications in automotive and marine settings.
• Ideal for use in high-stress environments where strength and reliability are critical, including engine internals, suspension components, and trailer hardware.

Construction & Design

The ARP Hex Bolt Kits are constructed from ARP's renowned 8740 chromoly steel, a material known for its exceptional toughness and fatigue resistance. Each bolt undergoes a proprietary heat treatment process that enhances tensile strength and ensures consistent mechanical properties. The black oxide finish provides additional corrosion resistance, making these fasteners suitable for exposure to moisture, saltwater, and other challenging conditions.

The flanged hex head design allows for a secure grip with standard wrenches or sockets, reducing the risk of stripping or slipping during installation. The 1-inch underhead length ensures proper engagement and clamping force, while the precise threading guarantees a smooth, accurate fit. These design features collectively contribute to a fastener that not only performs under extreme conditions but also maintains its integrity over repeated use.

Performance & Reliability

With a tensile strength rating of 180,000 psi, these ARP bolts provide a substantial safety margin for high-performance applications. Their superior material properties and manufacturing quality help support increased load capacity and reduce the risk of failure under stress. Whether used in engine builds, suspension setups, or trailer assemblies, these fasteners help ensure your components stay securely fastened, even in demanding conditions.

Installation & Fitment

Installing the ARP Hex Bolt Kits is straightforward and requires no special tools beyond standard wrenches or sockets. The bolts are designed to thread easily into compatible threaded holes, providing a secure and tight fit. No additional modifications, cutting, or drilling are necessary for most applications. Proper torque specifications should be followed to ensure optimal clamping force and safety.

• Simply thread the bolt into the corresponding nut or threaded hole, tighten to the manufacturer's recommended torque, and you're ready to go.
• Ensure that the threads are clean and free of debris before installation for best results.

What's Included

• Complete set of ARP Hex Bolts, each measuring 3/8˝-16 in thread size with a 1.000-inch underhead length
• High-quality hardware designed for durability and long service life
• Comprehensive packaging suitable for storage and future use

Ideal For

• Automotive engine assembly and repair
• Trailer and boat hardware fastening
• High-stress structural applications in racing or off-road vehicles
• Custom fabrication projects requiring reliable, high-strength fasteners

Emissions Note

This product is designed for off-road, racing, or recreational use only and may not be compliant with emissions regulations for street use. Please verify local laws and regulations before installation on a vehicle used on public roads.