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AJS Series High-Precision Adjustment Screws

100 TPI Adjustment Screws for Optical Mounts

AJS Series

High-Precision Adjustment Screws

New 170- and 254-TPI Thread Pitch
Sub-micron sensitivity
Patented end lock that does not influence the screw position — a Newport exclusive
Knobs with an integral hex hole allow increased sensitivity
Please call us regarding custom OEM designs

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Overview
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AJS Series Adjustment Screws have precision rolled threads for exceptionally smooth adjustment and higher sensitivity than standard micrometers. They are ideal for use with Newport optical mounts, stages, and most micrometer-compatible components. With sub-micron sensitivity, they are a cost-effective alternative to micrometers where position readout is not required.

Engaging or disengaging our patented thread-pitch lock, now standard, won't influence the screw position. The knobs feature an integral hex hole for increased adjustment sensitivity. High-precision 254, 170, 127, 100, or 20 TPI, rolled stainless steel threads are mated with the collet and proprietary lubricant for stictionless movement. The standard 0.375 in. (9.5 mm) diameter collet is threaded with a nut for mounting to optical mounts and stages. Our miniature series adjustment screws are ideal for OEM and custom mount applications. 20 TPI coarse adjustment screws are useful for quick travel adjustment where high resolution is not required.

Our patented thread-pitch lock secures the adjustment screw from turning by simply tightening a setscrew. Versions with knobs have the lock screw on the side, while hex versions have the lock screw conveniently located on the end next to the drive screw. A single wrench is used for both adjustment and locking. Non-locking, 0.5 in. (12.7 mm) travel versions are also available for use in optical mounts.

We offer these screws in 0.25, 0.5, 1, and 2 in. (6.35, 12.7, 25.4, and 50.8 mm) travel, with a knob or with hex adjustment. KD.37 and KD.75 stainless steel knobs are available as an accessory for use with the hex versions.

Left to right: AJS100-0.5 , AJS100-02H

This graph shows the results of alignment time testing of the Ultima Mirror mount with adjustment screws having 80, 100, 127 and 170 TPI. The new 170-TPI adjusters have a clear sensivity and alignment time advantage.

Knobs can be added to hex adjustment screws Left to right: AJS8-100-0.5H , KD.37 , KD.75

Compare the thread pitches of 80-, 100, 170- and 254-TPI screws. Thread pitch indicates the travel for one full rotation of the screw.

AJS170 Sensitivity Advantage round graph-w_screws

170-TPI Screws provide a significant improvement in adjustment sensitivity.

The AJS170-0.5K-NL-6 is a cost-saving pack of six 170-TPI Adjustment Screws which facilitate the upgrade of Ultima and Suprema mirror mounts.

Reference Image	Sensitivity* (µm)	Load Capacity [lb (N)]	Travel [in. (mm)]	Drive	Lock	Model
254 TPI Adjustment Screws
	0.28	20 (90)	0.50 (12.7)	KD.75 Knob	No Lock	AJS254-0.5K-NL
	0.28	20 (90)	0.50 (12.7)	Hex	No Lock	AJS254-0.5H-NL
170 TPI Adjustment Screws
	0.41	20 (90)	0.50 (12.7)	KD.75 Knob	No Lock	AJS170-0.5K-NL
	0.41	20 (90)	0.50 (12.7)	Hex	No Lock	AJS170-0.5H-NL
127 TPI Adjustment Screws
	0.56	20 (90)	0.25 (6.35)	Hex	End Lock	AJS127-02H
			0.50 (12.7)	Knob	Side Lock	AJS127-0.5
			0.50 (12.7)	Hex	End Lock	AJS127-0.5H
100 TPI Adjustment Screws
	0.71	20 (90)	0.25 (6.35)	Hex	End Lock	AJS100-02H
			0.50 (12.7)	Hex	No Lock	AJS100-0.5H-NL
			0.50 (12.7)	Hex	End Lock	AJS100-0.5H
			0.50 (12.7)	KD.75 Knob	No Lock	AJS100-0.5K-NL
				KD.75 Knob	Side Lock	AJS100-0.5K
				Knob	Side Lock	AJS100-0.5
			1.00 (25.4)	Hex	End Lock	AJS100-1H
			1.00 (25.4)	Knob	Side Lock	AJS100-1
			2.00 (50.8)	Knob	Side Lock	AJS100-2
Miniature 100 TPI Adjustment Screws
	0.71	10 (45)	0.25 (6.35)	Hex	Side Lock	AJS8-100-02H
			0.50 (12.7)	Hex	Side Lock	AJS8-100-0.5H
			0.50 (12.7)	Knob	Side Lock	AJS8-100-0.5
			1.00 (25.4)	Knob	Side Lock	AJS8-100-1
20 TPI Adjustment Screws
	3.5	20 (90)	0.50 (12.7)	Knob	Side Lock	AJS20-0.5
			1.00 (25.4)	Knob	Side Lock	AJS20-1
			2.00 (50.8)	Knob	Side Lock	AJS20-2

* Sensitivity based on a 1° rotation of the adjustment screw

Model	Description	avail raw	Availability	price raw	Price	Qty. MULTI ADD
AJS100-0.5K	High Precision Large Knob Adjustment Screw, 12.7 mm travel, 100 TPI, Side Lock	0	In Stock	27	$27.99	ADD
AJS100-1H	High Precision Hex Adjustment Screw, 25.4 mm Travel, 100 TPI, End Lock	0	In Stock	27	$27.99	ADD
AJS254-0.5K-NL	High Precision Large Knob Adjustment Screw, 12.7 mm travel, 254 TPI, No Lock	0	In Stock	59	$59.99	ADD
AJS8-100-0.5	Miniature High Precision Small Knob Adjustment Screw, 12.7mm, 100 TPI, Side Lock	2	2 Weeks	25	$25.99	ADD
KD.37	Small Actuator Knob, For Hex Head Adjustment Screw, U50 Series	0	In Stock	5	$5.99	ADD
KD.75	Large Actuator Knob, For Hex Head Adjustment Screw, U100 - U300 Series	0	In Stock	6	$6.99	ADD
AJS100-2	High Precision Small Knob Adjustment Screw, 50.8 mm Travel, 100 TPI, Side Lock	0	In Stock	29	$29.99	ADD
AJS170-0.5K-NL	High Precision Large Knob Adjustment Screw, 12.7 mm travel, 170 TPI, No Lock	0	In Stock	49	$49.99	ADD
AJS170-0.5K-NL-6	High Precision Large Knob Adjustment Screw, 12.7 mm Travel, 170 TPI, No Lock, Pack of 6	0	In Stock	249	$249.99	ADD
AJS20-1	High Precision Small Knob Adjustment Screw, 25.4 mm Travel, 20 TPI, Side Lock	0	In Stock	49	$49.99	ADD
AJS254-0.5H-NL	High Precision Hex Key Adjustment Screw, 12.7 mm travel, 254 TPI, No Lock	0	In Stock	59	$59.99	ADD
AJS254-0.5H-NL-6	High Precision Hex Key Adjustment Screw, 12.7 mm travel, 254 TPI, No Lock, Pack of 6	0	In Stock	299	$299.00	ADD
AJS100-0.5H	High Precision Hex Adjustment Screw, 12.7 mm Travel, 100 TPI, End Lock	0	In Stock	27	$27.99	ADD
AJS127-0.5	High Precision Small Knob Adjustment Screw, 12.7 mm Travel, 127 TPI, Side Lock	0	In Stock	39	$39.99	ADD
AJS127-0.5H	High Precision Hex Adjustment Screw, 12.7 mm Travel, 127 TPI, End Lock	0	In Stock	39	$39.99	ADD
AJS170-0.5H-NL-6	High Precision Hex Adjustment Screw, 12.7 mm Travel, 170 TPI, No Lock, Pack of 6	0	In Stock	249	$249.99	ADD
AJS20-2	High Precision Small Knob Adjustment Screw, 50.8 mm Travel, 20 TPI, Side Lock	0	In Stock	69	$69.99	ADD
AJS8-100-1	Miniature High Precision Small Knob Adjustment Screw, 25.4mm 100 TPI, Side Lock	0	In Stock	25	$25.99	ADD
AJS100-0.5	High Precision Small Knob Adjustment Screw, 12.7 mm Travel, 100 TPI, Side Lock	0	In Stock	25	$25.99	ADD
AJS100-02H	High Precision Hex Adjustment Screw, 6.35 mm Travel, 100 TPI, End Lock	0	In Stock	27	$27.99	ADD
AJS170-0.5H-NL	High Precision Hex Adjustment Screw, 12.7 mm Travel, 170 TPI, No Lock	0	In Stock	49	$49.99	ADD
AJS254-0.5K-NL-6	High Precision Large Knob Adjustment Screw, 12.7 mm travel, 254 TPI, No Lock, Pack of 6	0	In Stock	299	$299.00	ADD
AJS100-0.5H-NL	High Precision Hex Adjustment Screw, 12.7 mm Travel, 100 TPI, Hex, No Lock	0	In Stock	19	$19.99	ADD
AJS8-100-02H	Miniature High Precision Hex Adjustment Screw, 6.35mm Travel, 100 TPI, Side Lock	0	In Stock	25	$25.99	ADD
AJS100-1	High Precision Small Knob Adjustment Screw, 25.4 mm Travel, 100 TPI, Side Lock	0	In Stock	27	$27.99	ADD
AJS127-02H	High Precision Hex Adjustment Screw, 6.35 mm travel, 127 TPI, End Lock	0	In Stock	39	$39.99	ADD
AJS20-0.5	High Precision Small Knob Adjustment Screw, 12.7 mm Travel, 20 TPI, Side Lock	0	In Stock	39	$39.99	ADD
AJS8-100-0.5H	Miniature High Precision Hex Adjustment Screw, 12.7mm Travel, 100 TPI, Side Lock	0	In Stock	25	$25.99	ADD
AJS100-0.5K-NL	High Precision Large Knob Adjustment Screw, 12.7 mm Travel, 100 TPI, No Lock	0	In Stock	19	$19.99	ADD

	Dimensions [in. (mm)]		Thread
Model	A	B	C
AJS170-0.5K-NL	1.27 (32.3)	0.50 (12.7)	1/4-170
AJS170-0.5H-NL	1.29 (32.8)	0.50 (12.7)	1/4-170
AJS127-02H	1.23 (31.2)	0.25 (6.4)	1/4-127
AJS127-0.5H	1.43 (36.3)	0.50 (12.7)	1/4-127
AJS127-0.5	1.41 (35.8)	0.50 (12.7)	1/4-127
AJS100-02H	1.23 (31.2)	0.25 (6.4)	1/4-100
AJS100-0.5H-NL	1.29 (32.8)	0.50 (12.7)	1/4-100
AJS100-0.5H	1.43 (36.3)	0.50 (12.7)	1/4-100
AJS100-0.5K-NL	1.27 (32.3)	0.50 (12.7)	1/4-100
AJS100-0.5K	1.41 (35.8)	0.50 (12.7)	1/4-100
AJS100-0.5	1.41 (35.8)	0.50 (12.7)	1/4-100
AJS100-1H	2.10 (53.3)	1.00 (25.4)	1/4-100
AJS100-1	2.10 (53.3)	1.00 (25.4)	1/4-100
AJS100-2	2.97 (75.4)	2.00 (50.8)	1/4-100
AJS8-100-02H	0.88 (22.4)	0.25 (6.4)	8-100
AJS8-100-0.5H	1.16 (29.5)	0.50 (12.7)	8-100
AJS8-100-0.5	1.16 (29.5)	0.50 (12.7)	8-100
AJS8-100-1	1.85 (47.0)	1.00 (25.4)	8-100
AJS20-0.5	1.41 (35.8)	0.50 (12.7)	1/4-20
AJS20-1	2.10 (53.3)	1.00 (25.4)	1/4-20
AJS20-2	2.97 (75.4)	2.00 (50.8)	1/4-20