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Captive Locating Screws

Captive & Clamping Pins

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Product Information

Captive Locating Screws

Now also available in metric!

Captive Locating Screws can be used for locating and clamping, or for clamping only, by selecting the appropriate screw length. The locating screw's precision-ground body is positively retained in a locking bushing. In its fully retracted position, the bushing's spring clip snaps into the body's radial groove. This holds the screw fully retracted by the force of the spring and positively prevents removal. Pressure from the spring also holds the screw in intermediate extended positions. This is especially an advantage if the fixture is turned upside down. Captive locating screws are available in thread sizes from 1/4-20 to 1/2-13 (M6 to M12 in metric) and screw lengths from 1-1/4 – 3” (30 – 75mm in metric). Carr Lane Locating Screws are proudly Made in the USA.

The complete assemblies listed below include a Captive Locating Screw, Locking-Pin Bushing, and Lockscrew. Choice of standard or long bushing in most sizes, for installation in thinner or thicker plates. Locking-Pin Bushings are designed to press fit in a standard reamed hole and can be further secured with the included Lockscrew to positively hold the bushing in place.

Application Information

In fully retracted position, the bushing's spring clip holds the Locating Screw fully retracted by spring force and positively prevents removal. Spring pressure also holds the screw in intermediate extended positions.

Operation

Material

ITEM	MATERIAL	HEAT TREAT	FINISH
Screw	1215 Steel	Carburized-hardened	Black Oxide
Locking Bushing	1144 Steel or Equivalent	Carburized-hardened	Black Oxide
Retainer Clip	Spring Steel	-	N/A

Click here for detailed material and finish specifications.

California residents click here for Prop 65 information.

Captive Locating Screws

Complete Assembly (Inch)

QUANTITY	PART NO.	A DIA NOMINAL	A DIA ACTUAL	B SCREW LENGTH	P BUSHING LENGTH UNDER HEAD	P	C	D DIA	E THREAD	F	G	H	L	M	N DIA NOMINAL	N DIA ACTUAL	R	S DIA	LOCATING SCREW (INCLUDED)	BUSHING (INCLUDED)	LOCKSCREW (INCLUDED)
	CL-4-CLSA-1.25	1/4	.2490	1-1/4	Standard	.31	3/16	3/8	1/4-20	.40	.59	1/4	.81	.25	13/32	.4078	.62	13/16	CL-4-CLS-1.25	CL-4-LPB	LS-1
	CL-42-CLSA-1.25	1/4	.2490	1-1/4	Long	.50	3/16	3/8	1/4-20	.40	.59	1/4	.81	.25	13/32	.4078	.62	13/16	CL-4-CLS-1.25	CL-4A-LPB	LS-1
	CL-4-CLSA-1.75	1/4	.2490	1-3/4	Standard	.31	3/16	3/8	1/4-20	.40	.59	1/4	1.31	.25	13/32	.4078	.62	13/16	CL-4-CLS-1.75	CL-4-LPB	LS-1
	CL-42-CLSA-1.75	1/4	.2490	1-3/4	Long	.50	3/16	3/8	1/4-20	.40	.59	1/4	1.31	.25	13/32	.4078	.62	13/16	CL-4-CLS-1.75	CL-4A-LPB	LS-1
	CL-5-CLSA-1.38	5/16	.3115	1-3/8	Standard	.31	1/4	15/32	5/16-18	.47	.65	5/16	.94	.32	1/2	.5017	.62	13/16	CL-5-CLS-1.38	CL-5-LPB	LS-1
	CL-52-CLSA-1.38	5/16	.3115	1-3/8	Medium	.37	1/4	15/32	5/16-18	.47	.65	5/16	.94	.32	1/2	.5017	.62	13/16	CL-5-CLS-1.38	CL-5A-LPB	LS-1
	CL-53-CLSA-1.38	5/16	.3115	1-3/8	Long	.50	1/4	15/32	5/16-18	.47	.65	5/16	.94	.32	1/2	.5017	.62	13/16	CL-5-CLS-1.38	CL-5B-LPB	LS-1
	CL-5-CLSA-1.75	5/16	.3115	1-3/4	Standard	.31	1/4	15/32	5/16-18	.47	.65	5/16	1.31	.32	1/2	.5017	.62	13/16	CL-5-CLS-1.75	CL-5-LPB	LS-1
	CL-52-CLSA-1.75	5/16	.3115	1-3/4	Medium	.37	1/4	15/32	5/16-18	.47	.65	5/16	1.31	.32	1/2	.5017	.62	13/16	CL-5-CLS-1.75	CL-5A-LPB	LS-1
	CL-53-CLSA-1.75	5/16	.3115	1-3/4	Long	.50	1/4	15/32	5/16-18	.47	.65	5/16	1.31	.32	1/2	.5017	.62	13/16	CL-5-CLS-1.75	CL-5B-LPB	LS-1
	CL-5-CLSA-3.00	5/16	.3115	3	Standard	.31	1/4	15/32	5/16-18	.47	.65	5/16	2.56	.32	1/2	.5017	.62	13/16	CL-5-CLS-3.00	CL-5-LPB	LS-1
	CL-52-CLSA-3.00	5/16	.3115	3	Medium	.37	1/4	15/32	5/16-18	.47	.65	5/16	2.56	.32	1/2	.5017	.62	13/16	CL-5-CLS-3.00	CL-5A-LPB	LS-1
	CL-53-CLSA-3.00	5/16	.3115	3	Long	.50	1/4	15/32	5/16-18	.47	.65	5/16	2.56	.32	1/2	.5017	.62	13/16	CL-5-CLS-3.00	CL-5B-LPB	LS-1
	CL-6-CLSA-1.50	3/8	.3740	1-1/2	Standard	.31	5/16	9/16	3/8-16	.56	.75	3/8	1.06	.41	5/8	.6267	.62	13/16	CL-6-CLS-1.50	CL-6-LPB	LS-1
	CL-62-CLSA-1.50	3/8	.3740	1-1/2	Long	.50	5/16	9/16	3/8-16	.56	.75	3/8	1.06	.41	5/8	.6267	.62	13/16	CL-6-CLS-1.50	CL-6A-LPB	LS-1
	CL-6-CLSA-1.75	3/8	.3740	1-3/4	Standard	.31	5/16	9/16	3/8-16	.56	.75	3/8	1.31	.41	5/8	.6267	.62	13/16	CL-6-CLS-1.75	CL-6-LPB	LS-1
	CL-62-CLSA-1.75	3/8	.3740	1-3/4	Long	.50	5/16	9/16	3/8-16	.56	.75	3/8	1.31	.41	5/8	.6267	.62	13/16	CL-6-CLS-1.75	CL-6A-LPB	LS-1
	CL-6-CLSA-2.00	3/8	.3740	2	Standard	.31	5/16	9/16	3/8-16	.56	.75	3/8	1.56	.41	5/8	.6267	.62	13/16	CL-6-CLS-2.00	CL-6-LPB	LS-1
	CL-62-CLSA-2.00	3/8	.3740	2	Long	.50	5/16	9/16	3/8-16	.56	.75	3/8	1.56	.41	5/8	.6267	.62	13/16	CL-6-CLS-2.00	CL-6A-LPB	LS-1
	CL-6-CLSA-3.00	3/8	.3740	3	Standard	.31	5/16	9/16	3/8-16	.56	.75	3/8	2.56	.41	5/8	.6267	.62	13/16	CL-6-CLS-3.00	CL-6-LPB	LS-1
	CL-62-CLSA-3.00	3/8	.3740	3	Long	.50	5/16	9/16	3/8-16	.56	.75	3/8	2.56	.41	5/8	.6267	.62	13/16	CL-6-CLS-3.00	CL-6A-LPB	LS-1
	CL-8-CLSA-1.50	1/2	.4990	1-1/2	Standard	.50	3/8	3/4	1/2-13	.75	.93	1/2	1.06	.60	3/4	.7518	.75	1-1/16	CL-8-CLS-1.50	CL-8-LPB	LS-1
	CL-82-CLSA-1.50	1/2	.4990	1-1/2	Long	.75	3/8	3/4	1/2-13	.75	.93	1/2	1.06	.60	3/4	.7518	.75	1-1/16	CL-8-CLS-1.50	CL-8A-LPB	LS-1
	CL-8-CLSA-2.00	1/2	.4990	2	Standard	.50	3/8	3/4	1/2-13	.75	.93	1/2	1.56	.60	3/4	.7518	.75	1-1/16	CL-8-CLS-2.00	CL-8-LPB	LS-1
	CL-82-CLSA-2.00	1/2	.4990	2	Long	.75	3/8	3/4	1/2-13	.75	.93	1/2	1.56	.60	3/4	.7518	.75	1-1/16	CL-8-CLS-2.00	CL-8A-LPB	LS-1
	CL-8-CLSA-3.00	1/2	.4990	3	Standard	.50	3/8	3/4	1/2-13	.75	.93	1/2	2.56	.60	3/4	.7518	.75	1-1/16	CL-8-CLS-3.00	CL-8-LPB	LS-1
	CL-82-CLSA-3.00	1/2	.4990	3	Long	.75	3/8	3/4	1/2-13	.75	.93	1/2	2.56	.60	3/4	.7518	.75	1-1/16	CL-8-CLS-3.00	CL-8A-LPB	LS-1

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Locating Screw Only (Inch)

QUANTITY	PART NO.	A DIA NOMINAL	A DIA ACTUAL	B SCREW LENGTH	C	D DIA	E THREAD	F	G	H
	CL-4-CLS-1.25	1/4	.2490	1-1/4	3/16	3/8	1/4-20	.40	.59	1/4
	CL-5-CLS-1.38	5/16	.3115	1-3/8	1/4	15/32	5/16-18	.47	.65	5/16
	CL-5-CLS-1.75	5/16	.3115	1-3/4	1/4	15/32	5/16-18	.47	.65	5/16
	CL-5-CLS-3.00	5/16	.3115	3	1/4	15/32	5/16-18	.47	.65	5/16
	CL-6-CLS-1.50	3/8	.3740	1-1/2	5/16	9/16	3/8-16	.56	.75	3/8
	CL-6-CLS-2.00	3/8	.3740	2	5/16	9/16	3/8-16	.56	.75	3/8
	CL-6-CLS-3.00	3/8	.3740	3	5/16	9/16	3/8-16	.56	.75	3/8
	CL-8-CLS-1.50	1/2	.4990	1-1/2	3/8	3/4	1/2-13	.75	.93	1/2
	CL-8-CLS-2.00	1/2	.4990	2	3/8	3/4	1/2-13	.75	.93	1/2
	CL-8-CLS-3.00	1/2	.4990	3	3/8	3/4	1/2-13	.75	.93	1/2

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Complete Assembly (Metric)

QUANTITY	PART NO.	A DIA NOMINAL (mm)	A DIA ACTUAL (mm)	B SCREW LENGTH (mm)	P BUSHING LENGTH UNDER HEAD	P (mm)	C (mm)	D DIA (mm)	E THREAD	THREAD PITCH (mm)	F (mm)	G (mm)	H (mm)	L (mm)	M (mm)	N DIA NOMINAL (mm)	N DIA ACTUAL (mm)	R (mm)	S DIA (mm)	LOCATING SCREW (INCLUDED)	BUSHING (INCLUDED)	LOCKSCREW (INCLUDED)
	CLM-6-CLSA-30	6	5.975	30	Standard	8	5	10	M6	1	10	14	6	18	3.8	10	10.038	16	22	CLM-6-CLS-30	CLM-6-LPB	LSM-3
	CLM-8-CLSA-35	8	7.975	35	Standard	10	6	13	M8	1.25	12	17	8	23	7.4	13	13.043	16	22	CLM-8-CLS-35	CLM-8-LPB	LSM-3
	CLM-8-CLSA-45	8	7.975	45	Standard	10	6	13	M8	1.25	12	17	8	33	7.4	13	13.043	16	22	CLM-8-CLS-45	CLM-8-LPB	LSM-3
	CLM-8-CLSA-75	8	7.975	75	Standard	10	6	13	M8	1.25	12	17	8	63	7.4	13	13.043	16	22	CLM-8-CLS-75	CLM-8-LPB	LSM-3
	CLM-10-CLSA-40	10	9.975	40	Standard	12	8	16	M10	1.5	14	19	10	28	11.4	16	16.043	16	22	CLM-10-CLS-40	CLM-10-LPB	LSM-3
	CLM-10-CLSA-50	10	9.975	50	Standard	12	8	16	M10	1.5	14	19	10	38	11.4	16	16.043	16	22	CLM-10-CLS-50	CLM-10-LPB	LSM-3
	CLM-10-CLSA-75	10	9.975	75	Standard	12	8	16	M10	1.5	14	19	10	63	11.4	16	16.043	16	22	CLM-10-CLS-75	CLM-10-LPB	LSM-3
	CLM-12-CLSA-50	12	11.975	50	Standard	18	10	18	M12	1.75	20	26	12	38	17.3	20	20.046	18	26	CLM-12-CLS-50	CLM-12-LPB	LSM-3
	CLM-12-CLSA-60	12	11.975	60	Standard	18	10	18	M12	1.75	20	26	12	48	17.3	20	20.046	18	26	CLM-12-CLS-60	CLM-12-LPB	LSM-3
	CLM-12-CLSA-75	12	11.975	75	Standard	18	10	18	M12	1.75	20	26	12	63	17.3	20	20.046	18	26	CLM-12-CLS-75	CLM-12-LPB	LSM-3

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Locating Screw Only (Metric)

QUANTITY	PART NO.	A DIA NOMINAL (mm)	A DIA ACTUAL (mm)	B SCREW LENGTH (mm)	C (mm)	D DIA (mm)	E THREAD	THREAD PITCH (mm)	F (mm)	G (mm)	H (mm)
	CLM-6-CLS-30	6	5.975	30	5	10	M6	1	10	14	6
	CLM-8-CLS-35	8	7.975	35	6	13	M8	1.25	12	17	8
	CLM-8-CLS-45	8	7.975	45	6	13	M8	1.25	12	17	8
	CLM-8-CLS-75	8	7.975	75	6	13	M8	1.25	12	17	8
	CLM-10-CLS-40	10	9.975	40	8	16	M10	1.5	14	19	10
	CLM-10-CLS-50	10	9.975	50	8	16	M10	1.5	14	19	10
	CLM-10-CLS-75	10	9.975	75	8	16	M10	1.5	14	19	10
	CLM-12-CLS-50	12	11.975	50	10	18	M12	1.75	20	26	12
	CLM-12-CLS-60	12	11.975	60	10	18	M12	1.75	20	26	12
	CLM-12-CLS-75	12	11.975	75	10	18	M12	1.75	20	26	12

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