ARP Hex Bolt Kits

2010–2025 Universal / Automotive Applications M6 x 1.00

Part #: 660-1008

Overview

The ARP Hex Bolt Kits are high-quality fasteners designed to provide reliable, durable, and precise fastening solutions for a wide range of automotive, marine, and trailer applications. Crafted from premium materials and engineered for strength, these bolts are ideal for enthusiasts and professionals seeking to ensure the integrity of their assemblies under demanding conditions. Whether you're assembling engine components, securing chassis parts, or performing custom modifications, these ARP bolts deliver peace of mind with their superior tensile strength and heat-treated construction.

Designed for versatility and performance, the ARP Hex Bolt Kits are perfect for those who demand the best in quality and safety. Their robust construction and corrosion-resistant finish make them suitable for both indoor and outdoor use, ensuring long-lasting performance in various environments. If you're looking to upgrade your hardware with reliable, high-strength fasteners, these ARP bolts are an excellent choice to support your vehicle's performance and safety needs.

Key Features

ARP Hex Bolt Kits incorporate several advanced features that set them apart from standard hardware. Made from heat-treated 8740 chromoly steel, these fasteners offer exceptional strength and durability, rated at 180,000 psi tensile strength. This substantial margin of safety ensures they can withstand high-stress conditions typical in performance and heavy-duty applications.

• Premium Material: Crafted from 8740 chromoly steel, known for its high strength-to-weight ratio and toughness.
• Heat-Treated Construction: Fully heat-treated to optimize tensile strength and fatigue resistance, ensuring long-term reliability.
• Black Oxide Finish: Provides corrosion resistance and a sleek, professional appearance suitable for various environments.
• Flanged Hex Head: Designed for easy installation and secure torque application, reducing the risk of stripping or slipping during tightening.
• Nominal Thread Size: M6 x 1.00, compatible with a wide range of automotive and industrial components.
• Underhead Length: 55mm, offering sufficient engagement and holding power for many applications.
• Versatile Use: Suitable for automotive, marine, trailer, and general hardware applications where high-strength fasteners are required.
• Safety Margin: Rated at 180,000 psi tensile strength, providing a significant safety margin over standard Grade 8 hardware.
• Precision Manufacturing: Manufactured to strict standards for consistent quality and fitment.

Construction & Design

The ARP Hex Bolt Kits are meticulously engineered using high-grade 8740 chromoly steel, a material renowned for its exceptional toughness and strength. The bolts undergo a rigorous heat-treating process that enhances their tensile properties, making them capable of handling high-stress loads without deformation or failure. The black oxide finish not only adds corrosion resistance but also provides a professional, finished look suitable for both performance builds and restoration projects.

The flanged hex head design ensures a secure grip during installation, allowing for precise torque application and reducing the risk of cam-out or stripping. The 55mm underhead length offers ample engagement, ensuring the fastener maintains its clamping force over time. These design features combine to produce a fastener that is both reliable and easy to install, making them a favorite among automotive enthusiasts and professionals alike.

Installation & Fitment

The ARP Hex Bolt Kits are designed for straightforward, bolt-on installation. They utilize standard M6 x 1.00 threads and feature a flanged hex head that fits standard wrenches and sockets. No special tools or modifications are required for most applications. Simply torque the bolts to the manufacturer’s specifications to ensure proper clamping force and safety. These bolts are suitable for a wide range of automotive and industrial uses, making them a versatile addition to your toolkit.

• Easy to install with common hand tools
• No cutting, drilling, or special modifications needed
• Ideal for engine assembly, chassis reinforcement, and custom projects

What's Included

• Complete set of ARP Hex Bolts (660-1008) with black oxide finish
• All necessary hardware for installation
• Instruction sheet for proper torque specifications and installation tips

Ideal For

• Automotive enthusiasts performing engine or chassis upgrades
• Professional mechanics requiring high-strength fasteners
• Marine and trailer applications demanding corrosion-resistant hardware
• Custom fabrication and restoration projects