Clamping Shanks | McMaster-Carr

	System of Measurement System of Measurement

Inch

Metric

	For Fixture Plate Thickness For Fixture Plate Thickness

1/2"

3/4"

1 1/2"

	For Clamp Shank Diameter For Clamp Shank Diameter

	Material Material

Steel

Aluminum

	Shank Diameter Shank Diameter

	OD OD

	Component Component

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Length Length

	Holding Capacity Holding Capacity

	For Minimum Base Plate Thickness For Minimum Base Plate Thickness

	Mounting Fastener Thread Size Mounting Fastener Thread Size

	Shank Length Shank Length

	Thread Size Thread Size

	Thread Pitch Thread Pitch

0.7 mm

1 mm

	Head Thickness Head Thickness

	Head Diameter Head Diameter

	Hex Key Size Hex Key Size

	Bolt Circle Diameter Bolt Circle Diameter

44 Products

Ball-Lock Quick-Change Fixture Clamps

Build these components into fixture plates, machine subplates, and tombstones for quick changes. The system clamps and locates at the same time for accurate positioning with repeatability of ±0.0005". Components are compatible with Jergens Ball-Lock, Carr-Lane Carr Lock, and Kurt PinLock quick change systems.

For accurate positioning, at least two sets of clamps, liners, and receivers are required. Install the receivers in the base plate and the liners in the fixture plate. Then line up the two plates, insert the clamps, and tighten their screws to secure the fixture in place. If more holding capacity is needed, use additional clamps and receivers but omit liners to prevent the clamp from getting stuck in the fixture plate.

Push receiver plugs into unused receivers to prevent chips and coolant from accumulating during machining. When installed, plugs sit flush with the surface of the fixture plate. To remove, thread a screw into the tapped hole in the center and pull up.

Clamps

Clamp

	Shank		Head
For Fixture Plate Thick.	Dia., mm	Lg.	Dia.	Thick.	Hex Key Size	For Fixture Plate Thick. Tolerance	Holding Capacity, lbs.	Material	Includes		Each
1/2"	13	1.08"	7/8"	1/4"	3/32"	-0.005" to 0.005"	625	Black-Oxide Steel	Hex Key, Set Screw	0000000	0000000
1/2"	16	1.15"	1 1/2"	5/16"	1/8"	-0.005" to 0.005"	800	Black-Oxide Steel	Hex Key, Set Screw	0000000	000000
3/4"	13	1.33"	7/8"	1/4"	3/32"	-0.005" to 0.005"	625	Black-Oxide Steel	Hex Key, Set Screw	0000000	000000
3/4"	16	1.40"	1 1/2"	5/16"	1/8"	-0.005" to 0.005"	800	Black-Oxide Steel	Hex Key, Set Screw	0000000	000000
3/4"	20	1.53"	1 3/4"	3/8"	1/8"	-0.005" to 0.005"	2,250	Black-Oxide Steel	Hex Key, Set Screw	0000000	000000
3/4"	25	1.70"	2"	3/8"	5/32"	-0.005" to 0.005"	5,440	Black-Oxide Steel	Hex Key, Set Screw	0000000	000000
1"	20	1.78"	1 3/4"	3/8"	1/8"	-0.005" to 0.005"	2,250	Black-Oxide Steel	Hex Key, Set Screw	0000000	000000
1"	25	1.95"	2"	3/8"	5/32"	-0.005" to 0.005"	5,400	Black-Oxide Steel	Hex Key, Set Screw	0000000	000000
1"	30	2.13"	2 1/4"	1/2"	3/16"	-0.005" to 0.005"	8,000	Black-Oxide Steel	Hex Key, Set Screw	0000000	000000
1"	35	2.22"	2 1/4"	1/2"	1/4"	-0.005" to 0.005"	11,780	Black-Oxide Steel	Hex Key, Set Screw	0000000	000000
1"	50	2.70"	3"	3/4"	3/8"	-0.005" to 0.005"	15,200	Black-Oxide Steel	Hex Key, Set Screw	0000000	000000
1 1/2"	35	2.72"	2 1/4"	1/2"	1/4"	-0.005" to 0.005"	11,780	Black-Oxide Steel	Hex Key, Set Screw	0000000	000000
1 1/2"	50	3.20"	3"	3/4"	3/8"	-0.005" to 0.005"	15,200	Black-Oxide Steel	Hex Key, Set Screw	0000000	000000
2"	35	3.22"	2 1/4"	1/2"	1/4"	-0.005" to 0.005"	11,780	Black-Oxide Steel	Hex Key, Set Screw	0000000	000000
2"	50	3.70"	3"	3/4"	3/8"	-0.005" to 0.005"	15,200	Black-Oxide Steel	Hex Key, Set Screw	0000000	000000

Hole Liners

Hole Liner

For Fixture Plate Thick.	For Clamp Shank Dia., mm	OD	OD Tolerance Range	For Fixture Plate Thick. Tolerance	Material		Each
1/2"	13	0.7518"	-0.0004" to 0"	-0.005" to 0.005"	Black-Oxide Steel	0000000	000000
1/2"	16	1.0018"	-0.0004" to 0"	-0.005" to 0.005"	Black-Oxide Steel	0000000	00000
3/4"	13	0.7518"	-0.0004" to 0"	-0.005" to 0.005"	Black-Oxide Steel	0000000	00000
3/4"	16	1.0018"	-0.0004" to 0"	-0.005" to 0.005"	Black-Oxide Steel	0000000	00000
3/4"	20	1.3772"	-0.0004" to 0"	-0.005" to 0.005"	Black-Oxide Steel	0000000	00000
3/4"	25	1.3772"	-0.0004" to 0"	-0.005" to 0.005"	Black-Oxide Steel	0000000	00000
1"	20	1.3772"	-0.0004" to 0"	-0.005" to 0.005"	Black-Oxide Steel	0000000	00000
1"	25	1.3772"	-0.0004" to 0"	-0.005" to 0.005"	Black-Oxide Steel	0000000	00000
1"	30	1.7523"	-0.0004" to 0"	-0.005" to 0.005"	Black-Oxide Steel	0000000	00000
1"	35	1.7523"	-0.0004" to 0"	-0.005" to 0.005"	Black-Oxide Steel	0000000	00000
1"	50	2.5025"	-0.0004" to 0"	-0.005" to 0.005"	Black-Oxide Steel	0000000	00000
1 1/2"	35	1.7523"	-0.0004" to 0"	-0.005" to 0.005"	Black-Oxide Steel	0000000	00000
1 1/2"	50	2.5025"	-0.0004" to 0"	-0.005" to 0.005"	Black-Oxide Steel	0000000	00000
2"	35	1.7523"	-0.0004" to 0"	-0.005" to 0.005"	Black-Oxide Steel	0000000	00000
2"	50	2.5025"	-0.0004" to 0"	-0.005" to 0.005"	Black-Oxide Steel	0000000	00000

Receiver Plugs

Receiver Plug

		Thread
For Clamp Shank Dia., mm	Lg., mm	Size	Pitch, mm	Material		Each
13	8	M4	0.7	Aluminum	0000000	00000
16	8	M4	0.7	Aluminum	0000000	0000
20	8	M4	0.7	Aluminum	0000000	00000
25	10	M4	0.7	Aluminum	0000000	00000
30	11	M4	0.7	Aluminum	0000000	00000
35	14	M6	1	Aluminum	0000000	00000
50	17	M6	1	Aluminum	0000000	00000

Receiver Bushings

Receiver Bushing

For Min. Base Plate Thick.	For Clamp Shank Dia., mm	OD	Bolt Circle Dia.	OD Tolerance Range	Material	Number of Mounting Holes	Mounting Fasteners Included		Each
3/4"	13	1.3750"	0.984"	-0.0004" to 0"	Black-Oxide Steel	3	Yes	0000000	000000
3/4"	16	1.4370"	1.125"	-0.0004" to 0"	Black-Oxide Steel	3	Yes	0000000	00000
1"	20	1.6873"	1.362"	-0.0004" to 0"	Black-Oxide Steel	3	Yes	0000000	00000
1 1/4"	25	2.0623"	1.644"	-0.0004" to 0"	Black-Oxide Steel	3	Yes	0000000	00000
1 3/8"	30	2.2654"	1.876"	-0.0004" to 0"	Black-Oxide Steel	3	Yes	0000000	00000
1 1/2"	35	2.6873"	2.178"	-0.0004" to 0"	Black-Oxide Steel	3	Yes	0000000	00000
2"	50	3.4998"	2.916"	-0.0004" to 0"	Black-Oxide Steel	3	Yes	0000000	000000