The LBTEK differential screw assembly features both coarse and fine adjustments. The coarse adjustment has a travel of 8 mm with an accuracy of 0.25 mm/revolution, while the fine adjustment offers a travel of 0.4 mm with a precision of 0.025 mm/revolution. The coarse adjustment utilizes an M6×0.25 screw, whereas the fine adjustment achieves its 0.025 mm/revolution accuracy through a differential screw design. Coarse adjustment is performed using a 2 mm hex wrench, and fine adjustment is done with a 1.5 mm wrench. Note that due to the differential adjustment mechanism, there is a slight backlash in the differential adjustment. It is recommended to use this screw assembly with a preload of 1 kg or more to eliminate the backlash. The screw assembly includes a knurled screw for locking the assembly in place.

LBTEK precision adjustment screw pair, M6×0.25, is mainly used in optomechanical motion products, such as common optical mount series products, to control the precision of product motion. The hex adjuster has a diameter of M6, and its head has a 2 mm hex socket. The recommended mating hole diameter for the threaded bushing is Ø 9.5 mm (0~+0.02 mm), with hex nut locking. The recommended mating part thicknesses are 8~10 mm and 10 mm~13 mm. It can be used with the included knurled knob for precision adjustment, achieving an adjustment accuracy of 0.25 mm/turn.

LBTEK precision adjustment screw assembly, M6×0.25 is mainly used in opto-mechanical motion products, such as common optical mount series products, to control the precision of product movement. The diameter of the hex adjuster is M6, and the recommended bore size for the threaded bushing is 8.6 mm (0~+0.02 mm). The head features a 2 mm hex socket, which can be paired with the included detachable knurled knob for precise adjustment, achieving a regulation precision of 0.25 mm/revolution.

LBTEK precision adjustment screw assembly M5×0.25 is mainly used in opto-mechanical motion products, such as common optical adjustment mount series products, to control the precision of product movement. The diameter of the hex adjuster is M5, and the recommended matching hole size for the threaded bushing is 6.4 mm (0~+0.02 mm)~8 mm (0~+0.02 mm) optional. The head features a 2 mm hex socket hole, which can be paired with the included detachable knurled knob for precise adjustment, achieving an adjustment precision of 0.25 mm/revolution.