The ARP SAE Bolt Kit 5/16-18 x 4.000 12pt black oxide bolts (Product Code: 641-4000) are a must-have for any automotive enthusiast or mechanic looking for high-quality fasteners for their project. Made by the renowned brand ARP, these bolts are known for their exceptional strength, durability, and precision engineering.

These bolts feature a 5/16-18 thread diameter and a 4.000" UHL (Under Head Length), with a grip length of 3.000" and a thread length of 1.000". The 12-point design allows for easier and more precise tightening with a 3/8" socket size. The black oxide finish not only adds a sleek look to the bolts but also provides corrosion resistance for long-lasting performance.

ARP has earned a reputation for excellence in the automotive industry, with manufacturing facilities that span over 200,000 square feet in Southern California. Their product line includes a wide range of fasteners for engines, drivelines, suspension, frame, and more. Whether you're working on a high-performance racing car or a classic restoration project, you can trust ARP to provide the highest quality hardware to get the job done right.