Newport has introduced high-precision adjustment screws with a 170-thread-per-inch (TPI) thread pitch, providing a 43 per cent improvement in sensitivity over standard 100-TPI adjustment screws.
The benefit of the 170-TPI adjuster is strengthened by the results of timed alignment testing where a mirror mount with these adjusters was consistently aligned within a band of +/- 3 μrad in about half the time as the same mount with 100-TPI threads.
High-precision 170 TPI stainless steel threads are mated with the collet and a proprietary lubricant to allow a full 0.5 in. (12.7 mm) of fine, stictionless movement. The standard 0.375 (9.5 mm) diameter collet is threaded with a nut for effortless mounting to optical mounts and stages. The 170-TPI High-Precision Adjustment Screws are non-locking and are available with a knob or with a 5/64-in (2-mm) hex key.