Fitment and Product Information. ARP Manufacturing Overview ARP was the first company to design and engineer fasteners specifically for racing. We developed many patented process for manufacturing high strength fasteners from very strong materials. We have continued to improve our processes and quality control and we are now our manufacturing operations are ISO 9001 and AS9100 registered. 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. A Brief History They say that to be successful you must identify a need and satisfy it. Back in 1968 racing enthusiast Gary Holzapfel saw that many of his friends’ broken engines were caused by fastener failure. At the time, there were no commercially available studs and bolts up to the challenge. So Holzapfel called upon his many years of fastener making experience for a leading aerospace subcontractor and founded ARPÂ® (Automotive Racing Products). Manufacturing Process In order to ensure optimum quality control, ARP has grown to be exceptionally self-reliant and now controls all aspects of the manufacturing process. All operations are performed in-house and closely monitored. The Importance of Engineering There are a number of important elements in the production of specialty fasteners, not the least of which are materials, design and manufacturing. As you read further into this -catalog, you will get a better idea of the extraordinary steps taken by ARP to produce the very finest products of their kind on the market today. The key to success in all areas is personnel. And here’s where ARP’s cadre of highly qualified and dedicated specialists shines brightly. In racing, “aerospace” is not even close to good enough. 100% of Fastener Manufacturing Is In-house at ARP The reasoning behind this is best summed up in a quote from Gary Holzapfel, the founder of ARP:Over the years, we have found, through experience, that the only way to maintain the quality we require is to keep everything in-house. From heading through machining, grinding, heat-treat, thread rolling, and shot-peening to black oxide treatment we perform every operation in house on our own equipment with our own employees. WARNING : This product can expose you to chemicals including Styrene, which is known to the State of California to cause cancer.