Adjustable Ball Lock Pins (Knob Handle)

Ball Lock Pins & Quick-Release Pins

Product Information

Knob Handle

Adjustable Ball Lock Pins have an adjustable grip length. They can be used for clamping, or simply to provide a variable grip length. The threaded handle turns to provide a +/- 1/4" clamping range or adjustment range. When used just for variable grip length (not for clamping), the handle can be secured with the supplied knurled locknut. Ball Lock Pins are high-strength, quick-release alignment pins with a precision ground shank. They are positive locking until released by pushing the button, which moves the center spindle forward to allow the balls to retract. Adjustable Ball Lock Pins have four balls as standard, instead of two, for more-distributed ball-pullout force in clamping applications. The knob-handle version shown here is one of three available handle styles. Patent no. 3,101,641. Made in USA.

Available in pin diameters from 1/4 to 1" (6 to 20mm in metric), in stainless steel only. Standard grip lengths for each diameter are listed in the tables below, most in stock for same-day shipment. Pins with special grip lengths up to 12” (300mm) and other special features are available with additional lead time. The Part Configurator link at the top of this page can be used for any Adjustable Ball Lock Pin, either standard or special.

Technical Information

Ball Lock Pins are positive locking until released by pushing the button, which moves the center spindle forward to allow the balls to retract. Adjustable Ball Lock Pins can be used for clamping, or simply to provide a variable grip length.

Grip length adjusts +/- 1/4" from nominal

Adjustable Ball Lock Pins have four balls as standard, instead of two, for more-distributed ball-pullout force in clamping applications.

Optional Cable

To order pins with a standard cable assembly attached (#2 cable size, 12" long, with a terminal at the free end for a #10 or M5 attachment screw), add "-C" to the part number:

CL-4-ABPK-1.50-S-C

Material

STAINLESS STEEL
ITEM	MATERIAL	HEAT TREAT	FINISH	DFARS	RoHS
Shank	17-4PH Stainless Steel	Rc 40 min	Passivated	✔	✔
Spindle	17-4PH Stainless Steel	-	Passivated	✔	✔
T&L Handle	Aluminum Alloy	-	Black Oxide	✔	✔
Knob Handle	319 Aluminum Alloy	-	N/A	✔	✔
Head and Locknut	300-Series Stainless Steel	-	Passivated	✔	✔
Button	Aluminum Alloy	-	Anodized	✔	✔
Spring	17-7PH/302 Stainless Steel	-	N/A	✔	✔
Balls	440C Stainless Steel	-	N/A	✔	✔

Click here for detailed material and finish specifications.

California residents click here for Prop 65 information.

Adjustable Ball Lock Pins (Knob Handle)

General Dimensions (Inch)

The Basic Part Number shown here must be completed on the Pricing & Availability screen with a suffix for grip length (2-place decimal inch) followed by a “-S” for standard stainless-steel material. Also add a suffix for any desired option, such an attached cable (-C). For complete part numbers of stock grip lengths in each diameter, see tables at the bottom of this page.

BASIC PART NO.	A DIA NOMINAL	A DIA ACTUAL	B	C	D DIA	E	K	M DIA	N
CL-4-ABPK	1/4	.2485 / .2470	.290	.275	.22	1.45	.81	1.75	.33
CL-5-ABPK	5/16	.3110 / .3095	.375	.315	.22	1.45	.81	1.75	.33
CL-6-ABPK	3/8	.3735 / .3720	.438	.350	.27	1.48	.88	2.50	.39
CL-7-ABPK	7/16	.4360 / .4345	.508	.365	.27	1.48	.88	2.50	.39
CL-8-ABPK	1/2	.4985 / .4970	.592	.445	.39	1.55	.94	2.50	.46
CL-9-ABPK	9/16	.5610 / .5595	.666	.495	.39	1.55	.94	2.50	.46
CL-10-ABPK	5/8	.6235 / .6220	.750	.565	.50	2.07	1.24	2.99	.61
CL-12-ABPK	3/4	.7485 / .7470	.886	.655	.50	2.07	1.24	2.99	.61
CL-14-ABPK	7/8	.8735 / .8720	1.044	.745	.71	2.34	1.63	4.00	.75
CL-16-ABPK	1	.9985 / .9970	1.217	.875	.71	2.34	1.63	4.00	.75

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General Dimensions (Metric)

The Basic Part Number shown here must be completed on the Pricing & Availability screen with a suffix for grip length (in millimeters) followed by a “-S” for standard stainless-steel material. Also add a suffix for any desired option, such an attached cable (-C). For complete part numbers of stock grip lengths in each diameter, see tables at the bottom of this page.

BASIC PART NO.	A DIA NOMINAL (mm)	A DIA ACTUAL (mm)	B +/- 0.30 (mm)	C +/- 0.25 (mm)	D DIA (mm)	E (mm)	K (mm)	M DIA (mm)	N (mm)
CLM-6-ABPK	6	5.96 / 5.92	7.06	6.99	5.5	37	20.5	44.5	8.5
CLM-8-ABPK	8	7.96 / 7.92	9.42	8.00	5.5	37	20.5	44.5	8.5
CLM-10-ABPK	10	9.96 / 9.92	11.91	8.89	7	37.5	22.5	63.5	10
CLM-12-ABPK	12	11.96 / 11.92	14.40	11.30	7	37.5	22.5	63.5	10
CLM-16-ABPK	16	15.96 / 15.92	19.00	14.35	12.5	52.5	31.5	76	15.5
CLM-20-ABPK	20	19.96 / 19.92	24.08	20.19	12.5	52.5	31.5	76	15.5

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Stock Grip Lengths – Stainless Steel (Inch)

To order with optional cable, add "C" suffix to part number on Price & Availability screen.

PART NO.	A DIA NOMINAL	A DIA ACTUAL	GRIP LENGTH	B	C	D DIA	E	K	M DIA	N
CL-4-ABPK-0.50-S	1/4	.2485 / .2470	.50	.290	.275	.22	1.45	.81	1.75	.33
CL-4-ABPK-0.75-S	1/4	.2485 / .2470	.75	.290	.275	.22	1.45	.81	1.75	.33
CL-4-ABPK-1.00-S	1/4	.2485 / .2470	1.00	.290	.275	.22	1.45	.81	1.75	.33
CL-4-ABPK-1.25-S	1/4	.2485 / .2470	1.25	.290	.275	.22	1.45	.81	1.75	.33
CL-4-ABPK-1.50-S	1/4	.2485 / .2470	1.50	.290	.275	.22	1.45	.81	1.75	.33
CL-4-ABPK-1.75-S	1/4	.2485 / .2470	1.75	.290	.275	.22	1.45	.81	1.75	.33
CL-4-ABPK-2.00-S	1/4	.2485 / .2470	2.00	.290	.275	.22	1.45	.81	1.75	.33
CL-4-ABPK-2.50-S	1/4	.2485 / .2470	2.50	.290	.275	.22	1.45	.81	1.75	.33
CL-4-ABPK-3.00-S	1/4	.2485 / .2470	3.00	.290	.275	.22	1.45	.81	1.75	.33
CL-4-ABPK-3.50-S	1/4	.2485 / .2470	3.50	.290	.275	.22	1.45	.81	1.75	.33
CL-4-ABPK-4.00-S	1/4	.2485 / .2470	4.00	.290	.275	.22	1.45	.81	1.75	.33
CL-4-ABPK-4.50-S	1/4	.2485 / .2470	4.50	.290	.275	.22	1.45	.81	1.75	.33
CL-4-ABPK-5.00-S	1/4	.2485 / .2470	5.00	.290	.275	.22	1.45	.81	1.75	.33
CL-5-ABPK-0.50-S	5/16	.3110 / .3095	.50	.375	.315	.22	1.45	.81	1.75	.33
CL-5-ABPK-0.75-S	5/16	.3110 / .3095	.75	.375	.315	.22	1.45	.81	1.75	.33
CL-5-ABPK-1.00-S	5/16	.3110 / .3095	1.00	.375	.315	.22	1.45	.81	1.75	.33
CL-5-ABPK-1.50-S	5/16	.3110 / .3095	1.50	.375	.315	.22	1.45	.81	1.75	.33
CL-5-ABPK-2.00-S	5/16	.3110 / .3095	2.00	.375	.315	.22	1.45	.81	1.75	.33
CL-5-ABPK-2.50-S	5/16	.3110 / .3095	2.50	.375	.315	.22	1.45	.81	1.75	.33
CL-5-ABPK-3.00-S	5/16	.3110 / .3095	3.00	.375	.315	.22	1.45	.81	1.75	.33
CL-5-ABPK-4.00-S	5/16	.3110 / .3095	4.00	.375	.315	.22	1.45	.81	1.75	.33
CL-6-ABPK-0.50-S	3/8	.3735 / .3720	.50	.438	.350	.27	1.48	.88	2.50	.39
CL-6-ABPK-0.75-S	3/8	.3735 / .3720	.75	.438	.350	.27	1.48	.88	2.50	.39
CL-6-ABPK-1.00-S	3/8	.3735 / .3720	1.00	.438	.350	.27	1.48	.88	2.50	.39
CL-6-ABPK-1.25-S	3/8	.3735 / .3720	1.25	.438	.350	.27	1.48	.88	2.50	.39
CL-6-ABPK-1.50-S	3/8	.3735 / .3720	1.50	.438	.350	.27	1.48	.88	2.50	.39
CL-6-ABPK-1.75-S	3/8	.3735 / .3720	1.75	.438	.350	.27	1.48	.88	2.50	.39
CL-6-ABPK-2.00-S	3/8	.3735 / .3720	2.00	.438	.350	.27	1.48	.88	2.50	.39
CL-6-ABPK-2.50-S	3/8	.3735 / .3720	2.50	.438	.350	.27	1.48	.88	2.50	.39
CL-6-ABPK-3.00-S	3/8	.3735 / .3720	3.00	.438	.350	.27	1.48	.88	2.50	.39
CL-6-ABPK-3.50-S	3/8	.3735 / .3720	3.50	.438	.350	.27	1.48	.88	2.50	.39
CL-6-ABPK-4.00-S	3/8	.3735 / .3720	4.00	.438	.350	.27	1.48	.88	2.50	.39
CL-6-ABPK-4.50-S	3/8	.3735 / .3720	4.50	.438	.350	.27	1.48	.88	2.50	.39
CL-6-ABPK-5.00-S	3/8	.3735 / .3720	5.00	.438	.350	.27	1.48	.88	2.50	.39
CL-6-ABPK-6.00-S	3/8	.3735 / .3720	6.00	.438	.350	.27	1.48	.88	2.50	.39
CL-8-ABPK-0.75-S	1/2	.4985 / .4970	.75	.592	.445	.39	1.55	.94	2.50	.46
CL-8-ABPK-1.00-S	1/2	.4985 / .4970	1.00	.592	.445	.39	1.55	.94	2.50	.46
CL-8-ABPK-1.25-S	1/2	.4985 / .4970	1.25	.592	.445	.39	1.55	.94	2.50	.46
CL-8-ABPK-1.50-S	1/2	.4985 / .4970	1.50	.592	.445	.39	1.55	.94	2.50	.46
CL-8-ABPK-1.75-S	1/2	.4985 / .4970	1.75	.592	.445	.39	1.55	.94	2.50	.46
CL-8-ABPK-2.00-S	1/2	.4985 / .4970	2.00	.592	.445	.39	1.55	.94	2.50	.46
CL-8-ABPK-2.50-S	1/2	.4985 / .4970	2.50	.592	.445	.39	1.55	.94	2.50	.46
CL-8-ABPK-3.00-S	1/2	.4985 / .4970	3.00	.592	.445	.39	1.55	.94	2.50	.46
CL-8-ABPK-3.50-S	1/2	.4985 / .4970	3.50	.592	.445	.39	1.55	.94	2.50	.46
CL-8-ABPK-4.00-S	1/2	.4985 / .4970	4.00	.592	.445	.39	1.55	.94	2.50	.46
CL-8-ABPK-4.50-S	1/2	.4985 / .4970	4.50	.592	.445	.39	1.55	.94	2.50	.46
CL-8-ABPK-5.00-S	1/2	.4985 / .4970	5.00	.592	.445	.39	1.55	.94	2.50	.46
CL-8-ABPK-6.00-S	1/2	.4985 / .4970	6.00	.592	.445	.39	1.55	.94	2.50	.46
CL-10-ABPK-1.00-S	5/8	.6235 / .6220	1.00	.750	.565	.50	2.07	1.24	2.99	.61
CL-10-ABPK-1.50-S	5/8	.6235 / .6220	1.50	.750	.565	.50	2.07	1.24	2.99	.61
CL-10-ABPK-2.00-S	5/8	.6235 / .6220	2.00	.750	.565	.50	2.07	1.24	2.99	.61
CL-10-ABPK-2.50-S	5/8	.6235 / .6220	2.50	.750	.565	.50	2.07	1.24	2.99	.61
CL-10-ABPK-3.00-S	5/8	.6235 / .6220	3.00	.750	.565	.50	2.07	1.24	2.99	.61
CL-10-ABPK-4.00-S	5/8	.6235 / .6220	4.00	.750	.565	.50	2.07	1.24	2.99	.61
CL-12-ABPK-1.00-S	3/4	.7485 / .7470	1.00	.886	.655	.50	2.07	1.24	2.99	.61
CL-12-ABPK-1.50-S	3/4	.7485 / .7470	1.50	.886	.655	.50	2.07	1.24	2.99	.61
CL-12-ABPK-2.00-S	3/4	.7485 / .7470	2.00	.886	.655	.50	2.07	1.24	2.99	.61
CL-12-ABPK-2.50-S	3/4	.7485 / .7470	2.50	.886	.655	.50	2.07	1.24	2.99	.61
CL-12-ABPK-3.00-S	3/4	.7485 / .7470	3.00	.886	.655	.50	2.07	1.24	2.99	.61
CL-12-ABPK-4.00-S	3/4	.7485 / .7470	4.00	.886	.655	.50	2.07	1.24	2.99	.61
CL-16-ABPK-2.00-S	1	.9985 / .9970	2.00	1.217	.875	.71	2.34	1.63	4.00	.75
CL-16-ABPK-2.50-S	1	.9985 / .9970	2.50	1.217	.875	.71	2.34	1.63	4.00	.75
CL-16-ABPK-3.00-S	1	.9985 / .9970	3.00	1.217	.875	.71	2.34	1.63	4.00	.75
CL-16-ABPK-4.00-S	1	.9985 / .9970	4.00	1.217	.875	.71	2.34	1.63	4.00	.75
CL-16-ABPK-6.00-S	1	.9985 / .9970	6.00	1.217	.875	.71	2.34	1.63	4.00	.75

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Stock Grip Lengths – Stainless Steel (Metric)

To order with optional cable, add "C" suffix to part number on Price & Availability screen.

PART NO.	A DIA NOMINAL (mm)	A DIA ACTUAL (mm)	GRIP LENGTH (mm)	B +/- 0.30 (mm)	C +/- 0.25 (mm)	D DIA (mm)	E (mm)	K (mm)	M DIA (mm)	N (mm)
CLM-6-ABPK-20-S	6	5.96 / 5.92	20	7.06	6.99	5.5	37	20.5	44.5	8.5
CLM-6-ABPK-30-S	6	5.96 / 5.92	30	7.06	6.99	5.5	37	20.5	44.5	8.5
CLM-6-ABPK-40-S	6	5.96 / 5.92	40	7.06	6.99	5.5	37	20.5	44.5	8.5
CLM-6-ABPK-50-S	6	5.96 / 5.92	50	7.06	6.99	5.5	37	20.5	44.5	8.5
CLM-8-ABPK-20-S	8	7.96 / 7.92	20	9.42	8.00	5.5	37	20.5	44.5	8.5
CLM-8-ABPK-30-S	8	7.96 / 7.92	30	9.42	8.00	5.5	37	20.5	44.5	8.5
CLM-8-ABPK-40-S	8	7.96 / 7.92	40	9.42	8.00	5.5	37	20.5	44.5	8.5
CLM-8-ABPK-50-S	8	7.96 / 7.92	50	9.42	8.00	5.5	37	20.5	44.5	8.5
CLM-10-ABPK-30-S	10	9.96 / 9.92	30	11.91	8.89	7	37.5	22.5	63.5	10
CLM-10-ABPK-40-S	10	9.96 / 9.92	40	11.91	8.89	7	37.5	22.5	63.5	10
CLM-10-ABPK-50-S	10	9.96 / 9.92	50	11.91	8.89	7	37.5	22.5	63.5	10

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Measurement

Material

Finish

Products

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Adjustable Ball Lock Pins (Knob Handle)

Product Information

Technical Information

Optional Cable

Material

Adjustable Ball Lock Pins (Knob Handle)

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