Pemhex is a self-clinching prevailing torque lock-nut from Penn Engineering, with the integrated nylon insert there to resist screw loosening in service due to vibration and thermal cycling. “The ...

Engineers at General Dynamics Land Systems, Sterling Heights, Mich., faced a challenge when designing the Expeditionary Fighting Vehicle for the U. S. Marine Corps. The amphibious combat craft needed ...

The bolts holes are stripped and damaged on this Caterpillar D9T Bulldozer transmission cover! Someone has also tried to repair one of the holes using a self tapping thread repair insert but the hole ...