Header Bolt Kit - 6pt. 5/16-18 x 7/8 (20)

The Header Bolt Kit - 6pt. 5/16-18 x 7/8 (20) by STAGE 8 FASTENERS is a precision-engineered fastener set designed for demanding mechanical assemblies and custom automotive applications. Each kit contains 20 six-point bolts that meet strict tolerances required in motorsports and professional mechanical work. This fastener choice is ideal for applications where reliability and consistency are critical.

The six-point socket geometry of these bolts distributes load more evenly across fastener flats than twelve-point designs, significantly reducing rounding and stripping under vibration and thermal cycling. The 5/16-18 thread specification (5/16-inch diameter, 18 threads per inch) provides fine-pitch engagement, making it suitable for applications requiring controlled clamping force without the risk of over-torque. At 7/8-inch length, these bolts are particularly suited for header applications and precision machinery.

Professional mechanics and engine builders depend on this kit for header bolt replacement and equipment assembly where bolt integrity directly affects safety and function. The manufacturing tolerances ensure consistent head geometry and thread quality across all 20 units, eliminating weak links common in bulk hardware. This kit is an essential addition for anyone involved in high-performance automotive work.