CMM Fixture Components | McMaster-Carr

	Component Component

5-Way Stylus Center

Adjustable-Height Sleeve

Angle Plate

Any-Angle Cone Support

Stylus Thread Adapter

	System of Measurement System of Measurement

Inch

Metric

	Thread Size Thread Size

1/4"-20

	Material Material

Aluminum

Steel

Plastic

	Overall Length Overall Length

	Width Width

	Thickness Thickness

	Height Height

	Diameter Diameter

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

DFARS Specialty Metals
COTS-Exempt

	Hole Thread Size Hole Thread Size

1/4"-20

8-32

10-32

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

RoHS Compliant with
Exemptions

RoHS Compliant

	Number of Holes Number of Holes

	Number of Pieces Number of Pieces

	Mounting Thread Size Mounting Thread Size

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

REACH Compliant

	Reach Reach

	Clamp Style Clamp Style

Standard

Wire

	Ball Diameter Ball Diameter

	Thread Length Thread Length

	Manufacturer Model Number Manufacturer Model Number

	Stem Material Stem Material

	Body Material Body Material

114 Products

Inspection and Measuring Fixturing

Use these components in coordinate measuring machine (CMM) applications to raise a workpiece and reliably position it on a fixture plate with 1/4"-20 holes. They are not for use in machining applications.

For technical drawings and 3-D models, click on a part number.

Kits

42 Pieces

62 Pieces

Number of Pieces	Includes	Thread Size	Container Type		Each
42	3 Hold-Down Clamps—1 9/16" Reach × 3" O'all Ht. 3 Hold-Down Clamps—2 5/16" Reach × 3" O'all Ht. 3 Standoffs—1/2" Dia. × 3/4" Ht. 3 Standoffs—1/2" Dia. × 2" Ht. 3 Standoffs—3/4" Dia. × 3/4" Ht. 3 Standoffs—3/4" Dia. × 2" Ht. 6 Standoffs—1/2" Dia. × 1" Ht. 6 Standoffs—3/4" Dia. × 1" Ht. 3 Pin Supports—1/2" Dia. × 1/2" Ht. 3 Pin Supports—3/4" Dia. × 1/2" Ht. 3 Cone Supports 1 Adjustable-Height Sleeve for Standoffs 2 Positioning Plates	1/4"-20	Wood Stand	0000000	0000000
62	3 Hold-Down Clamps—1 9/16" Reach × 3" O'all Ht. 3 Hold-Down Clamps—2 5/16" Reach × 3" O'all Ht. 2 Toggle Clamps with Mounting Plate 3 Standoffs—1/2" Dia. × 3/4" Ht. 3 Standoffs—1/2" Dia. × 2" Ht. 3 Standoffs—3/4" Dia. × 3/4" Ht. 3 Standoffs—3/4" Dia. × 2" Ht. 3 Standoffs—1" Dia. × 3/4" Ht. 3 Standoffs—1" Dia. × 2" Ht. 6 Standoffs—1/2" Dia. × 1" Ht. 6 Standoffs—3/4" Dia. × 1" Ht. 6 Standoffs—1" Dia. × 1" Ht. 1 Precision Adjustable-Height Standoff—1/2" Dia. 3 Pin Supports—1/2" Dia. × 1/2" Ht. 3 Pin Supports—3/4" Dia. × 1/2" Ht. 6 Cone Supports 2 Any-Angle Cone Supports 1 Adjustable-Height Sleeve for Standoffs 2 Positioning Plates	1/4"-20	Wood Stand	0000000	00000000

Hold-Down Clamps

Hold-Down Clamp

Hold-down clamps thread directly into a fixture plate, tower, or compatible component. Slide the clamp down its shaft and press into place against the workpiece for a light hold. They're also known as tension spring clamps. Wire clamps have a slimmer profile than standard, making them good for clamping small parts or minimizing contact area for additional visibility.

		Thread
Reach	Ht.	Size	Pitch, mm	Lg.	Material	Tip Finish		Each
Standard
13/16"	2"	1/4"-20	__	1/4"	Aluminum	__	0000000	000000
1 9/16"	2 3/4"	1/4"-20	__	1/4"	Aluminum	__	0000000	00000
1 9/16"	2 3/4"	1/4"-20	__	1/4"	Aluminum	Rubber Coated	0000000	00000
2 5/16"	2 3/4"	1/4"-20	__	1/4"	Aluminum	__	0000000	00000
2 5/16"	2 3/4"	1/4"-20	__	1/4"	Aluminum	Rubber Coated	0000000	00000
3 7/16"	3"	1/4"-20	__	1/4"	Aluminum	__	0000000	00000
21mm	50mm	M4	0.7	4.8mm	Aluminum	__	0000000	00000
21mm	50mm	M6	1	6.4mm	Aluminum	__	0000000	00000
38mm	50mm	M4	0.7	4.8mm	Aluminum	__	0000000	00000
38mm	75mm	M6	1	6.4mm	Aluminum	__	0000000	00000
38mm	75mm	M8	1.25	7.9mm	Aluminum	__	0000000	00000
58mm	50mm	M4	0.7	4.8mm	Aluminum	__	0000000	00000
58mm	75mm	M6	1	6.4mm	Aluminum	__	0000000	00000
58mm	75mm	M8	1.25	7.9mm	Aluminum	__	0000000	00000
Wire
1 1/4"	1"	1/4"-20	__	1/4"	Aluminum	__	0000000	00000
2"	2"	1/4"-20	__	1/4"	Aluminum	__	0000000	00000

Fixture Plates

Fixture Plate

Fixture plates have a grid of 1/4"-20 threaded holes spaced 1/2" apart for attaching components. Alpha-numeric markings around the edges of the plates make it easier to identify holes and repeat tasks. Use aluminum plates with CMMs and optical comparators. Use acrylic plates on vision systems. They are transparent to provide your system with a view of the workpiece.

				Holes
Lg.	Wd.	Thick.	Parallel Tolerance	No. of	Style	Thread Size	Ctr.-to-Ctr.	Material		Each
3"	3"	1/2"	0.0025"	21	Threaded	1/4"-20	1/2"	Aluminum	0000000	0000000
3"	6"	1/2"	0.0025"	51	Threaded	1/4"-20	1/2"	Aluminum	0000000	000000
6"	6"	3/8"	0.0025"	121	Threaded	1/4"-20	1/2"	Acrylic Plastic	0000000	000000
6"	6"	3/8"	0.0025"	121	Threaded	1/4"-20	1/2"	Aluminum	0000000	000000
12"	12"	1/2"	0.005"	484	Threaded	1/4"-20	1/2"	Aluminum	0000000	000000
18"	18"	1/2"	0.01"	1,156	Threaded	1/4"-20	1/2"	Aluminum	0000000	00000000
24"	24"	3/4"	0.01"	2,116	Threaded	1/4"-20	1/2"	Aluminum	0000000	00000000

Fixture Towers

Fixture Tower

The height of fixture towers makes them useful for holding large parts. They have a grid of 1/4"-20 threaded holes spaced 1/2" apart for attaching components. Alpha-numeric markings around the edges of the towers make it easier to identify holes and repeat tasks.

	Tower		Base		Holes
Overall Ht.	Lg.	Wd.	Lg.	Wd.	No. of	Style	Thread Size	Material		Each
6"	1"	1"	5"	1"	41	Threaded	1/4"-20	Aluminum	0000000	0000000
12"	1 1/2"	1 1/2"	6"	1 1/2"	180	Threaded	1/4"-20	Aluminum	0000000	000000
24"	2"	2"	6"	2"	372	Threaded	1/4"-20	Aluminum	0000000	000000

Angle Plates

Angle Plate

Use an angle plate to mount components at a right angle.

			Slots		Holes
Lg.	Wd.	Ht.	Lg.	Wd.	No. of	Style	Thread Size	Material		Each
3"	1"	3"	1 3/4"	1/4"	18	Threaded	1/4"-20	Aluminum	0000000	000000

Standoffs

Standoff

Adjustable-Height Standoff

		Thread
Dia.	Ht.	Size	Lg.	Material		Each
Fixed Height
1/2"	1/2"	1/4"-20	1/4"	Steel	0000000	000000
1/2"	3/4"	1/4"-20	1/4"	Steel	0000000	00000
1/2"	1"	1/4"-20	1/4"	Steel	0000000	00000
1/2"	2"	1/4"-20	1/4"	Steel	0000000	00000
1/2"	3"	1/4"-20	1/4"	Steel	0000000	00000
3/4"	1/2"	1/4"-20	1/4"	Steel	0000000	00000
3/4"	3/4"	1/4"-20	1/4"	Steel	0000000	00000
3/4"	1"	1/4"-20	1/4"	Steel	0000000	00000
3/4"	2"	1/4"-20	1/4"	Steel	0000000	00000
3/4"	3"	1/4"-20	1/4"	Steel	0000000	00000
1"	1/2"	1/4"-20	1/4"	Steel	0000000	00000
1"	3/4"	1/4"-20	1/4"	Steel	0000000	00000
1"	1"	1/4"-20	1/4"	Steel	0000000	00000
1"	2"	1/4"-20	1/4"	Steel	0000000	00000
1"	3"	1/4"-20	1/4"	Steel	0000000	00000
Adjustable Height
1/2"	1 7/16"-1 3/4"	1/4"-20	1/4"	Aluminum	0000000	00000

Pin Supports

Pin Support

		Pin		Thread
Dia.	Ht.	Dia.	Ht.	Size	Lg.	Material		Each
1/2"	3/4"	1/8"	1/4"	1/4"-20	1/4"	Steel	0000000	000000
3/4"	3/4"	1/8"	1/4"	1/4"-20	1/4"	Steel	0000000	00000

Cone Supports

Cone Support

		Thread
Dia.	Ht.	Size	Lg.	Material		Each
5/8"	1/2"	1/4"-20	1/4"	Acetal Plastic	0000000	000000

Any-Angle Cone Support

			Thread
Arm Lg.	Body Lg.	Arm Rotation	Size	Lg.	Body Material	Cone Material		Each
4 1/4"	4"	360°	1/4"-20	1 1/8"	Steel	Acetal Plastic	0000000	000000

Adjustable-Height Sleeve

For Standoff Dia.	Dia.	Ht.	Thread Size	Material	Includes		Each
1/2"	1 1/8"	2"	1/4"-20	Acetal Plastic	1/4"-20 Knurled Knob	0000000	000000

Positioners

Positioner

			Slot		Holes
Lg.	Wd.	Thick.	Lg.	Wd.	No. of	Thread Size	Material	Includes		Each
2"	5/8"	1/4"	7/8"	9/32"	1	1/4"-20	Steel	1/4"-20 Knurled Knob	0000000	000000
3"	1"	1/4"	1 3/4"	9/32"	1	1/4"-20	Steel	1/4"-20 Knurled Knob	0000000	00000
3 1/8"	1 1/2"	1/4"	1"	9/32"	6, 4	8-32, 10-32	Steel	1/4"-20 Knurled Knob	0000000	00000

Attachments for Renishaw Probes

Install these styli, adapters, and other accessories in Renishaw probes.

Ball styli are used for general purpose probing applications.

Cylinder styli are used for probing holes in thin workpieces.

Stylus extensions extend the reach of the stylus.

5-way stylus centers hold up to five styli at once to speed up inspection time by allowing you to probe with multiple styli.

Break stems are designed to break during an impact to protect your probe from damage.

Thread adapters adapt the thread of the stylus.

For technical drawings and 3-D models, click on a part number.

Ball Styli

Ball Stylus

Ball								Material
Dia., mm	Material	Grade	Dia. Tolerance Range	Sphericity Tolerance Range	Effective Working Lg., mm	Overall Lg., mm	Stem Dia., mm	Body	Stem	Manufacturer Model Number		Each
M2 × 0.4 mm
0.3	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	2	10	0.2	Stainless Steel	Tungsten Carbide	A-5000-7800	000000000	0000000
0.5	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	3	10	0.4	Stainless Steel	Tungsten Carbide	A-5000-7805	000000000	000000
0.5	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	7	20	0.3	Stainless Steel	Tungsten Carbide	A-5003-1345	000000000	000000
0.7	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	4	10	0.5	Stainless Steel	Tungsten Carbide	A-5000-7801	000000000	00000
0.7	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	12	20	0.5	Stainless Steel	Tungsten Carbide	A-5003-0577	000000000	000000
1	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	4.5	10	0.7	Stainless Steel	Stainless Steel	A-5000-7806	000000000	00000
1	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	7	20	0.7	Stainless Steel	Tungsten Carbide	A-5000-7808	000000000	00000
1	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	12.5	20	0.8	Stainless Steel	Tungsten Carbide	A-5003-0033	000000000	00000
1	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	20.5	27.5	0.7	Stainless Steel	Tungsten Carbide	A-5000-8663	000000000	00000
1.5	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	12.5	20	1	Stainless Steel	Tungsten Carbide	A-5003-0034	000000000	00000
1.5	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	22.5	30	1	Stainless Steel	Tungsten Carbide	A-5003-0035	000000000	00000
2	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	6	10	1	Stainless Steel	Stainless Steel	A-5000-7807	000000000	00000
2	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	14	20	1	Stainless Steel	Tungsten Carbide	A-5003-3822	000000000	00000
2	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	14	20	1.4	Stainless Steel	Stainless Steel	A-5000-3603	000000000	00000
2	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	22.5	30	1.5	Stainless Steel	Tungsten Carbide	A-5003-0036	000000000	00000
2	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	32.5	40	1.5	Stainless Steel	Tungsten Carbide	A-5003-0037	000000000	00000
3	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	17	20	1.5	Stainless Steel	Stainless Steel	A-5000-4160	000000000	00000
3	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	47	50	2	Stainless Steel	Ceramic	A-5003-0064	000000000	00000
4	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	20	20	1.5	Stainless Steel	Stainless Steel	A-5000-4161	000000000	00000
4	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	50	50	2	Stainless Steel	Ceramic	A-5003-0065	000000000	00000
M3 × 0.5 mm
1	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	4	21	0.7	Stainless Steel	Stainless Steel	A-5000-3551	000000000	00000
1.5	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	22.5	30	1	Stainless Steel	Tungsten Carbide	A-5003-0051	000000000	00000
2	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	9.6	21	1.4	Stainless Steel	Stainless Steel	A-5000-3552	000000000	00000
2	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	32.5	40	1.5	Stainless Steel	Tungsten Carbide	A-5003-0053	000000000	00000
3	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	14.7	21	1.5	Stainless Steel	Stainless Steel	A-5000-3553	000000000	00000
M4 × 0.7 mm
1	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	4.5	19.5	0.7	Stainless Steel	Stainless Steel	A-5000-7545	000000000	00000
2	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	8.9	19	1.4	Stainless Steel	Stainless Steel	A-5000-7547	000000000	00000
2	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	40	50	1.5	Stainless Steel	Tungsten Carbide	A-5003-4797	000000000	000000
3	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	38.5	50	2	Stainless Steel	Tungsten Carbide	A-5003-3680	000000000	000000
5	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	16	20	3	Stainless Steel	Stainless Steel	A-5000-6731	000000000	00000
5	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	26	30	3	Stainless Steel	Stainless Steel	A-5000-6352	000000000	00000
5	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	83.2	100	4.5	Stainless Steel	Stainless Steel	A-5000-7522	000000000	00000
6	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	33.4	50	4.5	Stainless Steel	Ceramic	A-5000-3709	000000000	000000
6	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	88.5	100	4.4	Stainless Steel	Carbon Fiber	A-5003-6510	000000000	000000
6	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	88.5	100	4.5	Stainless Steel	Carbon Fiber	A-5003-1358	000000000	000000
6	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	88.5	100	4.5	Stainless Steel	Ceramic	A-5000-3712	000000000	000000
6	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	135	150	4.5	Stainless Steel	Ceramic	A-5000-8156	000000000	000000
8	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	100	100	4.5	Stainless Steel	Ceramic	A-5000-7796	000000000	000000

Cylinder Styli

Cylinder Stylus

Ball								Material
Dia., mm	Material	Grade	Dia. Tolerance Range	Sphericity Tolerance Range	Effective Working Lg., mm	Overall Lg., mm	Stem Dia., mm	Body	Stem	Manufacturer Model Number		Each
M2 × 0.4 mm
1	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	8	15	1	Stainless Steel	Stainless Steel	A-5000-8876	000000000	0000000
2	Ruby	5	-0.000005" to 0.000005"	-0.000005" to 0.000005"	7.2	21.2	1.55	Stainless Steel	Stainless Steel	A-5000-7812	000000000	000000

Stylus Extensions

Stylus Extension

		Material
Overall Lg., mm	Stem Dia., mm	Body	Stem	Manufacturer Model Number		Each
M2 × 0.4 mm
5	3	Stainless Steel	Stainless Steel	A-5004-7610	000000000	000000
10	3	Stainless Steel	Stainless Steel	A-5004-7585	000000000	00000
20	3	Stainless Steel	Stainless Steel	A-5004-7586	000000000	00000
30	3	Stainless Steel	Stainless Steel	A-5004-7591	000000000	00000
40	3	Stainless Steel	Stainless Steel	A-5004-7611	000000000	00000
M3 × 0.5 mm
20	4	Stainless Steel	Stainless Steel	A-5004-7583	000000000	00000
M4 × 0.7 mm
30	7.4	Stainless Steel	Ceramic	A-5000-7754	000000000	00000
50	7.4	Ceramic	Ceramic	A-5000-7755	000000000	00000
100	7.4	Stainless Steel	Ceramic	A-5000-7727	000000000	000000

5-Way Stylus Centers

5-Way Stylus Center

		Material
Overall Lg., mm	Stem Dia., mm	Body	Stem	Manufacturer Model Number		Each
M2 × 0.4 mm
7.5	3	Stainless Steel	Stainless Steel	A-5000-3627	000000000	000000
M3 × 0.5 mm
13	4	Stainless Steel	Stainless Steel	A-5000-7610	000000000	00000

Break Stems

Break Stem

		Material
Overall Lg., mm	Stem Dia., mm	Body	Stem	Manufacturer Model Number	Includes		Each
M3 × 0.5 mm
13.3	7	Stainless Steel	Stainless Steel	A-5004-7616	__	000000000	000000
M4 × 0.7 mm
8	6.92	Stainless Steel	Stainless Steel	A-5004-7598	__	000000000	0000
12	6.9	Stainless Steel	Stainless Steel	A-5004-7621	__	000000000	00000
15	3.92	Steel	Steel	A-5004-7443	__	000000000	00000
15.2	3.9	Stainless Steel	Stainless Steel	A-5003-5171	Break Stem, Tether	000000000	00000
16	3.4	Stainless Steel	Stainless Steel	A-5004-6723	__	000000000	00000

Stylus Thread Adapters

Stylus Thread Adapter

Male Mounting Thread		Female Mounting Thread				Material
Size	Pitch, mm	Size	Pitch, mm	Overall Lg., mm	Stem Dia., mm	Body	Stem	Manufacturer Model Number		Each
M3	0.5	M2	0.4	5	4	Stainless Steel	Stainless Steel	A-5004-7592	000000000	000000
M4	0.7	M2	0.4	5	7	Stainless Steel	Stainless Steel	A-5004-7595	000000000	00000
M4	0.7	M3	0.5	50	4.5	Ceramic	Ceramic	A-5000-7751	000000000	00000
M5	0.8	M3	0.5	10	10	Stainless Steel	Stainless Steel	A-5555-0227	000000000	00000