ARP 12pt Hardware Kit

Universal Fitment for Automotive, Marine, and Trailer Applications

Part #: 641-0560

Overview

The ARP 12pt Hardware Kit is a premium-quality fastener solution designed for enthusiasts and professionals who demand the highest standards in their assembly and repair projects. Crafted from top-grade materials, this bolt kit provides exceptional strength, durability, and reliability for a wide range of applications including automotive, marine, and trailer setups. Whether you're upgrading your engine components, securing trailer parts, or performing custom modifications, these high-performance fasteners ensure a secure and lasting connection.

Ideal for those seeking to enhance safety margins and achieve precise, dependable fastening, the ARP 12pt Hardware Kit offers peace of mind during demanding driving conditions or heavy-duty use. Its robust construction and heat-treated properties make it suitable for both daily drivers and high-performance builds, supporting your vehicle’s integrity and performance over time.

Key Features

The ARP 12pt Hardware Kit stands out with its superior materials and engineering, providing a combination of strength, corrosion resistance, and ease of installation. Key features include:

• Made from high-strength 8740 chromoly steel, known for its excellent toughness and fatigue resistance, ensuring long-lasting performance under stress.
• Heat-treated to a tensile strength of 180,000 psi, offering a significant safety margin over standard Grade 8 hardware, making it suitable for high-stress applications.
• Black oxide finish provides corrosion resistance and a sleek, professional appearance, suitable for both visible and hidden fasteners.
• Designed with a 5/16˝-18 thread size, compatible with a wide range of automotive, marine, and trailer components requiring robust fastening solutions.
• 12-point (12pt) head design allows for increased torque application and easier access in tight spaces, reducing the risk of stripping or rounding off the fastener head during installation or removal.
• Precision-machined threads and heads ensure a perfect fit and smooth installation, minimizing the risk of cross-threading or damage.
• Versatile application range, from engine assembly to chassis reinforcement, trailer coupling, or custom fabrication projects.
• Manufactured by ARP, a trusted leader in high-performance fasteners with a reputation for quality and consistency.
• Available in various sizes and head styles to suit specific project needs, with this kit focusing on 5/16˝-18 bolts for general-purpose use.

Construction & Design

The ARP 12pt Hardware Kit features a meticulously engineered design that emphasizes strength, durability, and ease of use. The bolts are crafted from 8740 chromoly steel, a material renowned for its exceptional toughness and ability to withstand high loads and repeated stress cycles. The heat treatment process enhances the tensile strength, ensuring the fasteners can support demanding applications without failure.

The black oxide finish not only enhances corrosion resistance but also provides a professional, finished appearance suitable for visible installations. The 12-point head design allows for increased torque application and better access in confined spaces, making installation and removal more straightforward even in tight or awkward locations. Precision machining guarantees a perfect fit, reducing the risk of stripping and ensuring a secure, reliable connection every time.

Designed with versatility in mind, these fasteners are suitable for a broad spectrum of uses, from automotive engine components to marine hardware and trailer assemblies. The robust construction and high-quality materials ensure that these bolts will perform reliably over the long term, even in harsh environments or under heavy loads.

Installation & Fitment

The ARP 12pt Hardware Kit is designed for straightforward, bolt-on installation. Its precise machining and standardized thread size ensure compatibility with a wide range of components that require 5/16˝-18 fasteners. No special tools beyond standard wrenches or sockets are necessary for installation or removal. The 12-point head design facilitates easier tightening in tight spaces, saving time and effort during assembly or maintenance.

Because these fasteners are engineered to meet or exceed OEM standards, no cutting, drilling, or special modifications are typically required. They are suitable for both professional mechanics and DIY enthusiasts seeking reliable, high-performance hardware for their projects.

What's Included

• Complete set of 5/16˝-18 chromoly bolts with 12-point heads
• All necessary hardware components for installation
• Instruction sheet for proper torque specifications and installation tips

Ideal For

• Automotive enthusiasts performing engine or chassis upgrades
• Marine applications requiring corrosion-resistant fasteners
• Trailer builders and repair professionals
• Custom fabrication projects demanding high-strength hardware
• Anyone seeking reliable, safety-rated fasteners for demanding environments