ARP Hex Bolt Kits

2010–2025 Universal Fit for Cars, Boats, and Trailers

Part #: 663-1006

Overview

The ARP Hex Bolt Kits are premium-quality fasteners designed to provide reliable and durable fastening solutions for a wide range of automotive, marine, and trailer applications. Crafted from high-strength chromoly steel, these bolts are engineered to withstand demanding conditions and deliver consistent performance. Whether you're assembling critical engine components, securing trailer parts, or performing custom modifications, these ARP bolts offer the peace of mind that comes with industry-leading quality.

Ideal for enthusiasts and professionals alike, these bolt kits are perfect for those seeking to upgrade their hardware with components that combine strength, safety, and longevity. With their black oxide finish, they not only perform well but also add a sleek, corrosion-resistant appearance to your project. Designed for ease of installation and maximum safety, ARP Hex Bolt Kits are a trusted choice for demanding applications where strength and reliability are paramount.

Key Features

ARP Hex Bolt Kits incorporate several advanced features that set them apart from standard fasteners:

• Constructed from heat-treated 8740 chromoly steel, offering exceptional tensile strength of 180,000 psi for maximum durability and safety.
• Black oxide finish provides corrosion resistance and a professional appearance, suitable for both performance and restoration projects.
• Designed with a flanged hex head for easy installation and removal using standard tools, ensuring a secure fit and reducing the risk of stripping.
• Nominally rated at 180,000 psi tensile strength, providing a substantial safety margin over Grade 8 hardware for critical applications.
• Precisely machined with M10 x 1.25 thread size and 45mm underhead length, ensuring compatibility with a wide range of components and assemblies.
• Versatile for use on cars, boats, trailers, and other machinery requiring high-quality fasteners.
• Manufactured to strict quality standards, ensuring consistent performance and reliability in demanding environments.
• Heat-treated for enhanced toughness and fatigue resistance, extending the service life of the fasteners.
• Suitable for high-stress applications where safety and strength are essential, such as engine assembly, suspension components, and structural attachments.

Construction & Design

The ARP Hex Bolt Kits are meticulously engineered from 8740 chromoly steel, a material renowned for its exceptional strength-to-weight ratio and toughness. The bolts undergo a precise heat-treatment process to achieve a tensile strength of 180,000 psi, ensuring they can withstand high loads and stresses without failure. The black oxide finish not only enhances corrosion resistance but also provides a sleek, professional look suitable for both performance and restoration projects.

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 or rounding off the head. The 45mm underhead length ensures compatibility with a variety of components, while the M10 x 1.25 thread size offers broad applicability across different applications. These features combine to deliver a fastener that is both robust and user-friendly, capable of handling the rigors of high-performance environments.

Installation & Fitment

The ARP Hex Bolt Kits are designed for straightforward, bolt-on installation. They utilize standard M10 x 1.25 threads and feature a flanged hex head for easy tightening with common tools. No special modifications, cutting, or drilling are required for most applications, making them suitable for both professional mechanics and DIY enthusiasts. Proper torque specifications should be followed to ensure optimal clamping force and safety.

• Easy to install with standard wrenches or sockets.
• No cutting, drilling, or special tuning needed.
• Compatible with a wide range of automotive, marine, and trailer components.

What's Included

• Complete set of ARP Hex Bolts with black oxide finish
• Hardware for secure fastening
• Installation instructions (if provided)

Ideal For

• High-performance automotive applications
• Marine equipment and boat assembly
• Trailer construction and repair
• Custom fabrication projects requiring reliable fasteners
• Enthusiasts seeking durable, high-strength hardware for critical components