Key Locking Studs for Aerospace

Acme Industrial Company, a subsidiary of Jergens, Inc., has announced a new line of Key Locking Studs. These key locked fasteners (also known as staked studs), have a solid one-piece design to provide high pull-out strength and torque-out capabilities. They are used in original equipment, or to repair damaged threads. The studs’ keys are driven down into the threads of the surrounding base material to securely lock them into place and to provide a mechanical lock against vibration.

Acme Key Locking Studs are produced to NAS and SAE Standards (MS51833 and MS51834). They are available in a full range of inch and metric sizes, in both lightweight and heavy duty versions. The studs are available in a variety of materials, including 303, A286, 17-4PH CRES and 4140 Alloy Steel.

Key locked studs provide security and “repairability” in applications where a through-bolt / nut combination is not possible. They are superior for use in soft materials such as aluminumor magnesium. Installation is easy, using standard drills and taps. An important feature is the ability of staked studs to be removed without damage to the parent material by using a standard screw extractor.