ARP was the first company to design and engineer fasteners specifically for racing. They developed many patented processes for manufacturing high strength fasteners from very strong materials. There's not another company in the world that is as focused on building superior quality fasteners for all forms of racing and non-racing applications, as ARP.

8740 chrome moly is seen as a good tough steel, with adequate fatigue properties for most racing applications, but only if the threads are rolled after heat-treatment, as is the standard ARP production practice. Typically, chrome moly is classified as a quench and temper steel, that can be heat-treated to deliver tensile strengths between 180,000 and 210,000 psi.

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