
5/16 X 18 UNF BLACK OXIDE 12 POINT HEX NUT
- 5/16 X 18 UNF BLACK OXIDE 12 POINT HEX NUT
Procomp Electronics nuts are made from aerospace-quality chromoly steel with 12-point style heads. They come in many sizes to meet just about all of your needs and are rated at 180,000 psi tensile strength.
Fasteners Built for Absolute Confidence
Speedmaster high-performance nuts deliver the strength and reliability expected from a brand known for precision-engineered hardware, combining aerospace-grade chromoly steel construction with carefully machined 12-point heads to ensure secure engagement in demanding automotive environments. Designed to cover a wide range of applications, these versatile fasteners reflect Speedmaster’s commitment to material integrity, controlled manufacturing, and consistent tensile performance, giving builders and tuners the assurance of proper clamping force and long-term durability, whether assembling street machines, restorations, or high-output race engines.