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Ø12.7 mm Standard Post Holder

Spring-loaded knurled thumb socket set screw;
Bottom with M6 tapped through-hole;
Various lengths available, with the option to purchase in 5-piece packages;

The standard Ø12.7mm post holder from LBTEK features a standard ultra-wide square relief groove, providing dual-line contact to prevent optical posts from sliding or rotation. The precision-engineered spring-loaded knurled thumb socket set screw (M6) should be tightened to <3.2N·m torque, and a 5 mm hex key reinforces the clamping force. (Note: Excessive torque may cause the locking screw to break. It is recommended to use an L-shaped hex key and gently tighten by holding the short end). The PH-xxA series post holder features an M6 tapped through-hole at its base: This allows flexible pairing with either a magnetic base (PR-1S) or a non-magnetic base (PR-1A). It can also be directly used with the PB-x series mount or secured to a breadboard by threading an M6 screw.

The spring-loaded knurled thumb socket set screw prevents post axial sliding prior to tightening.

Product Model	Main Housing Dimensions	Quantity	Clamping diameter	Unit Price	Lead Time
PH-30A	30 mm	1 piece	Ø12.7 mm	$7.58	5 weeks
PH-150A-P5	150 mm	5 pieces	Ø12.7 mm	$65.37	4 weeks
PH-150A	150 mm	1 piece	Ø12.7 mm	$13.73	4 weeks
PH-100A-P5	100 mm	5 pieces	Ø12.7 mm	$50.2	4 weeks
PH-100A	100 mm	1 piece	Ø12.7 mm	$10.07	5 weeks
PH-75A-P5	75 mm	5 pieces	Ø12.7 mm	$46.67	4 weeks
PH-75A	75 mm	1 piece	Ø12.7 mm	$9.81	5 weeks
PH-50A-P5	50 mm	5 pieces	Ø12.7 mm	$43.01	4 weeks
PH-50A	50 mm	1 piece	Ø12.7 mm	$8.89	4 weeks
PH-40A-P5	40 mm	5 pieces	Ø12.7 mm	$37.26	4 weeks
PH-40A	40 mm	1 piece	Ø12.7 mm	$7.84	4 weeks
PH-25A-P5	25 mm	5 pieces	Ø12.7 mm	$35.43	4 weeks
PH-25A	25 mm	1 piece	Ø12.7 mm	$7.45	4 weeks

Ø12.7 mm Base-type Pod Holders

Integrated magnetic base;
Through-base design for greater height adjustment range;
Various lengths available, with the option to purchase in 5-piece packages;
Spring-loaded knurled thumb socket set screw;

The base-type post holders from LBTEK adopt a compact design, featuring a precision-engineered spring-loaded knurled thumb socket set screw (M6). The maximum torque when tightening the thumb screw should be <3.2N·m, and a 5 mm hex key reinforces the clamping force (Note: Excessive torque may cause the locking screw to fracture. It is recommended to use an L-shaped hex key gripped at the short end for gentle tightening.). The integrated magnetic base has a thickness of 4.7mm, providing strong magnetic holding force. When used with the PHC-45 clamping fork, it can be flexibly secured to an optical breadboard. The bottom through-hole design allows for maximum post height adjustment.

The spring-loaded thumb socket set screw prevents post sliding prior to tightening.

Product Model	Main Housing Dimensions	Quantity	Clamping diameter	Unit Price	Lead Time
PH-30B	30 mm	1 piece	Ø12.7 mm	$19.35	5 weeks
PH-150B-P5	150 mm	5 pieces	Ø12.7 mm	$120.54	4 weeks
PH-150B	150 mm	1 piece	Ø12.7 mm	$25.1	5 weeks
PH-100B-P5	100 mm	5 pieces	Ø12.7 mm	$112.31	4 weeks
PH-100B	100 mm	1 piece	Ø12.7 mm	$23.4	4 weeks
PH-75B-P5	75 mm	5 pieces	Ø12.7 mm	$109.3	4 weeks
PH-75B	75 mm	1 piece	Ø12.7 mm	$22.75	5 weeks
PH-50B-P5	50 mm	5 pieces	Ø12.7 mm	$98.32	4 weeks
PH-50B	50 mm	1 piece	Ø12.7 mm	$20.53	5 weeks
PH-40B-P5	40 mm	5 pieces	Ø12.7 mm	$94.53	4 weeks
PH-40B	40 mm	1 piece	Ø12.7 mm	$19.74	4 weeks
PH-25B-P5	25 mm	5 pieces	Ø12.7 mm	$90.6	4 weeks
PH-25B	25 mm	1 piece	Ø12.7 mm	$18.96	5 weeks

5mm Spring-loaded Thumb Socket Screw

7075-T6 aluminum alloy;
Retractable front POM plunger;
Front M6x1.0 thread screw;
10 pieces per box, includes a hex key;
Knurled thumb screws allow initial hand tightening; 5 mm hex keys provide final torque tightening;

The spring-loaded 5 mm hex thumb screws from LBTEK are manufactured from 7075-T6 aluminum, the highest strength grade among common aluminum materials, delivering nearly twice the torsional performance of 6061-T6 aluminum. The front POM plunger effectively prevents post scratching. Knurled thumb screws enable initial hand tightening for positional adjustment. After positioning, a 5 mm hex key reinforces the clamping force (Note: Excessive torque may cause the locking screw to fracture. It is recommended to use an L-shaped hex key gripped at the short end for gentle tightening, with a maximum recommended torque of 3.2 N·m).

Spring-loaded 5 mm hex thumb screws are commonly used for Ø12.7 mm post holders.

	Product Model	Thread specification	Hex size	Unit Price	Compare	Lead Time
	STS6-P10	M6×1.0	5 mm	$23.66		4 weeks

Ø12.7 mm Post Holder