LBTEK-Your Trusted Partner For Optoelectronic Experiments!

Product Description

Used to control the precision of product movement
The hex adjuster with knurled knob achieves an adjustment precision of 0.25 mm/revolution
Locking and non-locking available
Options with or without knob
Hex adjusters available in different lengths
Threaded bushings come in two types: adhesive-mounted and hex nut-fixed (hex nut-fixed type allows free disassembly)

LBTEK precision adjustment screw assemblies are primarily used in opto-mechanical motion products, such as common optical mount series products, to control the precision of product movement. The LBTEK precision adjustment screw assembly mainly consists of three parts: a knurled knob, a hexagonal adjuster, and a threaded bushing, which can be disassembled and reassembled by the user. The threaded connection part of the assembly is coated with damping grease, enabling smooth and seamless engagement between the threaded bushing and the hexagonal adjuster while also reducing wear between them. The hexagonal adjuster features a 2 mm internal hex hole at its head, which can be used with the included detachable knurled knob for precise adjustment, achieving an adjustment precision of 0.25 mm per revolution.

Attribute

Hex Adjustment Screw Material303 Stainless Steel

Threaded bushing materialPhosphor bronze

Surface treatmentKnob sandblasted red anodized

Adjustment accuracy0.25 mm/rev

Maximum adjustment range14 mm

Precision adjustment screw assembly, M6×0.25, adhesive type

Adjustment accuracy: 0.25mm/rev
Recommended bore diameter for threaded bushing: 8.6 mm (0~+0.02 mm)
Maximum adjustment range: 8 mm
Available with or without locking mechanism
Available with or without knob

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.

M6×0.25 precision adjustment screw assembly placed sideways

Product Model	Recommended Bore Size for Threaded Bushing	Maximum adjustment range	Unit Price	Lead Time
M6X025-32K	Ø8.6 mm (0~+0.02 mm)	8 mm	$11.51	5 weeks
M6X025-35KL	Ø8.6 mm (0~+0.02 mm)	5.8 mm	$17.65	5 weeks
M6X025-17	Ø8.6 mm (0~+0.02 mm)	4.9 mm	$8.63	5 weeks

Precision adjustment screw assembly, M5×0.25, adhesive type

Adjustment accuracy: 0.25mm/revolution
Recommended bore diameter for threaded bushing: 6.4 mm (0~+0.02 mm)~8 mm (0~+0.02 mm) optional
Maximum adjustment range: 10 mm
With or without locking option available
With or without knob option available

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.

M5×0.25 precision adjustment screw assembly placed sideways

Product Model	Recommended Bore Size for Threaded Bushing	Maximum adjustment range	Unit Price	Lead Time
M5X025-13	Ø6.4 mm (0~+0.02 mm)	2.8 mm	$7.45	5 weeks
M5X025-14	Ø6.4 mm (0~+0.02 mm)	4.1 mm	$7.45	5 weeks
M5X025-24K	Ø6.4 mm (0~+0.02 mm)	4.5 mm	$11.77	5 weeks
M5X025-25KL	Ø7 mm (0~+0.02 mm)	5.5 mm	$14.77	5 weeks
M5×025-50KL	Ø8 mm (0~+0.02 mm)	10 mm	$26.67	6 weeks
M5X025-30KL	Ø8 mm (0~+0.02 mm)	4.2 mm	$16.21	5 weeks

Precision adjustment screw assembly, M6×0.25, hex nut fixed type

Adjustment accuracy: 0.25 mm/revolution
Recommended bore diameter for threaded bushing fit: φ9.5 mm (0~+0.02)
Recommended mating part thickness: 10 mm~13 mm
Maximum adjustment range: 14 mm
Available with or without locking mechanism
Available with or without knob
Threaded bushing fixed with hex nut for easy disassembly

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, with a 2 mm hex socket in the head. The recommended matching hole size for the threaded bushing is Ø 9.5 mm (0~+0.02 mm), featuring a hex nut for locking. The recommended matching part thickness ranges from 10 mm to 13 mm. It can be paired with the included detachable knurled knob for precision adjustment, achieving a fine-tuning precision of 0.25 mm/revolution.

M6×0.25 precision adjustment screw assembly, hex nut fixed type

Product Model	Recommended Bore Size for Threaded Bushing	Maximum adjustment range	Recommended Compatible Part Thickness	Unit Price	Lead Time
M6X025-47KLNB New	Ø9.5 mm (0~+0.02 mm)	15.8	8mm~10mm	$23.27	5 weeks
M6X025-47KLN	Ø9.5 mm (0~+0.02 mm)	12.8 mm	10 mm~13 mm	$23.27	5 weeks
M6X025-44KN	Ø9.5 mm (0~+0.02 mm)	13.3 mm	10 mm~13 mm	$21.83	5 weeks
M6X025-37LN	Ø9.5 mm (0~+0.02 mm)	14 mm	10 mm~13 mm	$20	4 weeks
M6X025-33N	Ø9.5 mm (0~+0.02 mm)	13.5 mm	10 mm~13 mm	$17.78	5 weeks

Differential screw assembly, coarse adjustment accuracy 0.25 mm/rev, fine adjustment accuracy 0.025 mm/rev, adhesive type

Adjustment accuracy: coarse adjustment 0.25 mm/rev, fine adjustment 0.025 mm/rev
Recommended bore size for threaded bushing: 8.6 mm (0~+0.02 mm)
Adjustment range: coarse adjustment 8 mm, fine adjustment 0.4 mm

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.

Multi-angle display of differential screw assembly

	Product Model	Hex Adjustment Screw Material	Adjustment range	Adjustment accuracy	Unit Price	Compare	Lead Time
	M6×025-37KD	303 Stainless Steel	Coarse adjustment 8 mm, fine adjustment 0.4 mm	Coarse adjustment 0.25 mm/rev, fine adjustment 0.025 mm/rev	$30.2		6 weeks

Precision Adjustment Screw Assemblies