To maintain a reputation for "zero defects", ensure optimum quality control, and produce fasteners of exceptionally high quality, ARP controls all aspects of the manufacturing process, performing all operations in-house where they can be closely monitored. ARP takes extraordinary steps to produce the very finest products of their kind on the market today, and the engineers spent quite a bit of time developing these highly effective and unique oil pan studs. Theyre designed to make it as easy as possible to install a pan and seal it properly. The radiused bullet nose serves to locate the pan rails, then allow the nuts to be easily installed without the worry of cross-threading. Manufactured from rust-proof stainless steel, these studs come complete with special hex style locking flanged nuts.