ARP 12pt Hardware Kit

Universal 5/16˝-18 SAE Bolt Kit

Part #: 641-2500

Overview

The ARP 12pt Hardware Kit is a premium-quality fastener solution designed for automotive, marine, and trailer applications. Crafted with precision and durability in mind, this kit provides reliable, high-strength bolts that meet the demanding needs of performance enthusiasts and professional installers alike. Whether you're assembling a custom engine build, securing suspension components, or upgrading your trailer hardware, these ARP fasteners deliver exceptional strength and corrosion resistance.

Ideal for those seeking to enhance safety margins and ensure long-lasting performance, this hardware kit is suitable for a wide range of projects. The use of top-tier materials and heat treatment processes ensures that each fastener maintains its integrity under stress, providing peace of mind during spirited driving or heavy-duty use. With ARP's reputation for quality and innovation, this kit is a trusted choice for both daily drivers and performance builds.

Key Features

The ARP 12pt Hardware Kit offers several key features that set it apart from standard fasteners:

• Manufactured from high-strength 8740 chromoly steel, known for its excellent toughness and fatigue resistance.
• Heat-treated to a tensile strength of 180,000 psi, providing a significant safety margin over typical Grade 8 hardware.
• Black oxide finish enhances corrosion resistance and provides a sleek, professional appearance.
• Designed with a 12-point head for increased torque application and easier installation in tight spaces.
• Available in a variety of thread sizes, head styles, and configurations to suit diverse application needs.
• Precision-machined to strict tolerances for a perfect fit and reliable performance.
• Suitable for use on cars, boats, trailers, and other heavy-duty equipment requiring high-quality fasteners.
• Engineered to withstand harsh environments, including exposure to moisture, heat, and vibration.
• Backed by ARP's reputation for quality control and consistent manufacturing standards.

Construction & Design

The ARP 12pt Hardware Kit is constructed from 8740 chromoly steel, a material renowned for its strength and durability in demanding applications. Each fastener undergoes a proprietary heat treatment process that enhances its tensile strength to 180,000 psi, ensuring it can handle high loads and stresses without failure. The black oxide coating not only provides a sleek, corrosion-resistant surface but also helps extend the lifespan of the hardware in challenging environments.

The 12-point head design allows for increased torque application and better grip during installation and removal, especially in tight or hard-to-reach spaces. This design also reduces the risk of stripping the head, making maintenance and assembly more straightforward. Precision machining ensures each bolt meets strict dimensional tolerances, guaranteeing a secure fit and reliable performance across various applications.

Performance & Benefits

Using ARP's high-quality fasteners can significantly improve the safety and reliability of your vehicle or equipment assembly. The superior tensile strength and heat treatment provide a substantial safety margin, reducing the risk of fastener failure under extreme conditions. The corrosion-resistant finish helps maintain appearance and integrity over time, even in harsh environments.

These bolts are ideal for performance builds, off-road adventures, or any application where high-strength hardware is critical. Their robust construction ensures consistent performance, whether you're tightening suspension components, securing engine parts, or assembling trailers that endure heavy loads.

Installation & Fitment

The ARP 12pt Hardware Kit is designed for easy, bolt-on installation. The fasteners are compatible with standard SAE 5/16˝-18 threads and can be used with common tools. No special modifications or tuning are required for installation, making it suitable for both professional mechanics and DIY enthusiasts. Always ensure proper torque specifications are followed to maximize safety and performance.

• Easy to install with standard hand tools.
• No cutting, drilling, or special modifications needed.
• Suitable for a wide range of automotive, marine, and trailer applications.

What's Included

• Complete set of high-strength 5/16˝-18 chromoly bolts with 12-point heads
• All necessary hardware for installation
• Instruction sheet (if applicable)

Ideal For

• Performance automotive builds
• Marine applications requiring corrosion-resistant fasteners
• Trailer assembly and repair
• Heavy-duty industrial and off-road equipment
• Enthusiasts seeking reliable, high-quality hardware for critical fastenings

Emissions Note

This product is designed for use in applications where high-strength fasteners are required. It is not specifically certified for emissions compliance and is intended for off-road, racing, or industrial use only. Always verify local regulations before installation on street-driven vehicles.