The “POWER LOCK®” thread form distributes the load radially beyond the threads significantly increasing the strength and overall integrity of the connection. The tip/diffuser contact area is also increased and maintained by deforming the crest or tip of the thread aiding in a reduction of electrical resistance.

POWER LOCK® diffusers are available in Brass or Copper for the most demanding welding applications.

Power Lock®  vs Tough Lock® - Click for details

WEDGE RAMP in the root of the internal female thread of the diffuser. Uniform load distribution per thread increases life of the diffuser and minimizes chances of thread jamming. Constant surface contact aids in dissipation of heat and reduces electrical resistance across the threaded joint, reducing fatigue failure and increasing the integrity of the treaded joint.
(Not to scale for demonstration purposes)

LOCKING and CENTERING. The major diameter or crest of the male thread of contact tip slightly deforms against wedge ramp of the diffuser causing the locking feature. This feature eliminates radial thread clearances and creates a continuous spiral line of contact along the entire length of the thread creating a very accurate centering of the contact tip.

Power Lock diffuser
Test Results