ARP Hex Bolt Kits

2010–2025 Universal / Automotive / Marine / Trailer Applications M10 x 1.25

Part #: 663-1012

Overview

The ARP Hex Bolt Kits are premium-quality fasteners designed to provide reliable and high-strength fastening solutions for a wide range of automotive, marine, and trailer applications. Crafted from top-grade materials and engineered for durability, these bolts are ideal for enthusiasts and professionals seeking to ensure the safety and integrity of their assemblies. Whether you're performing engine rebuilds, chassis modifications, or trailer repairs, these ARP bolts deliver consistent performance and peace of mind.

Designed with precision and attention to detail, the ARP Hex Bolt Kits help support your vehicle's performance and safety needs. Their robust construction and heat-treated properties make them suitable for demanding environments, ensuring your components stay securely fastened under stress and vibration. These bolts are perfect for those who value quality and reliability in their hardware.

Key Features

ARP Hex Bolt Kits are engineered with several key features that set them apart from standard hardware:

• Manufactured from high-strength 8740 chromoly steel, offering exceptional tensile strength and durability for critical fastening points.
• Heat-treated to a tensile strength of 180,000 psi, providing a substantial safety margin over typical Grade 8 hardware, ensuring long-lasting performance under high loads.
• Black oxide finish enhances corrosion resistance and provides a sleek, professional appearance suitable for visible engine components or chassis assemblies.
• Designed with a flanged hex head for easy installation and removal using standard tools, reducing the risk of stripping or damage during torque application.
• Nominally rated at 180,000 psi tensile strength, these bolts are ideal for high-stress applications where safety and reliability are paramount.
• Underhead length of 100mm ensures compatibility with a variety of mounting points and components, providing flexibility during installation.
• Versatile application across automotive, marine, and trailer projects, making these bolts a valuable addition to any toolkit.
• Precision manufacturing and strict quality control ensure consistent dimensions and fitment, reducing installation time and ensuring proper clamping force.
• Suitable for use in high-performance engines, chassis modifications, and heavy-duty trailer assemblies where strength and safety are critical.

Construction & Design

The ARP Hex Bolt Kits are constructed from 8740 chromoly steel, a material renowned for its exceptional strength-to-weight ratio and toughness. The bolts undergo a proprietary heat-treatment process that enhances their tensile strength to 180,000 psi, ensuring they can withstand high-stress environments without deformation or failure. The black oxide finish not only provides corrosion resistance but also helps reduce glare and improve aesthetic appeal.

The flanged hex head design allows for easy installation and removal with standard wrenches or sockets, providing a secure grip and reducing the risk of stripping. The 100mm underhead length offers versatility, accommodating various mounting depths and component thicknesses. These design features combine to deliver a fastener that is both robust and user-friendly, suitable for demanding applications where safety and performance are essential.

Installation & Fitment

The ARP Hex Bolt Kits are designed for straightforward, bolt-on installation. They utilize standard flanged hex heads compatible with common tools, making them accessible for both professional mechanics and DIY enthusiasts. No special tools or modifications are required for installation, and the bolts are compatible with standard M10 x 1.25 threaded components. Proper torque specifications should be followed to ensure optimal clamping force and safety.

• Ensure all threads are clean and free of debris before installation.
• Apply appropriate torque according to your application’s specifications to prevent over-tightening or under-tightening.
• Use a thread lubricant if recommended for your specific application to facilitate proper torque and prevent galling.

These bolts are suitable for a wide range of applications, including engine assembly, chassis mounting, and trailer hardware. Their high strength and corrosion resistance make them a reliable choice for both daily driving and demanding performance scenarios.

What's Included

• Complete set of ARP Hex Bolts with flanged hex heads
• All necessary hardware for installation
• Instruction sheet for proper torque and installation guidelines

Ideal For

• Automotive enthusiasts performing engine rebuilds or modifications
• Marine applications requiring high-strength fasteners resistant to corrosion
• Trailer builders and repair professionals seeking reliable hardware
• DIYers looking for durable, high-quality fasteners for various projects