Universal, Hex SAE Bolt Kit (621-1250) by ARP. Finish: Polished. Material: Stainless Steel. UHL: 1.250. Torque Value: 12 ft-lbs (16.3 Nm). Thread Size: 1/4-20. Wrench Size: 5/16. Quantity: Set of 5. Package Type: Skin. Designed utilizing the latest technology, this product by ARP features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or exceed stringent industry standards. We showcase a wide variety of premium RCD performance upgrades that will help you unlock more performance, increase comfort and fuel efficiency, and many more.