Starrett Center Finders | McMaster-Carr

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Starrett

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	Manufacturer Model Number Manufacturer Model Number

	System of Measurement System of Measurement

Inch

Metric

	Body Diameter Body Diameter

3/8"

1/2"

10mm

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

DFARS Specialty Metals
COTS-Exempt

	Length Length

	Material Material

Steel

Iron

	Tip Diameter Tip Diameter

0.2"

6mm

	Tip Shape Tip Shape

Barrel

Point

	For Thread Type For Thread Type

UNC

UNF

	For Threads per Inch For Threads per Inch

	Blade Length Blade Length

	For Use With For Use With

Bolts

Screws

Threaded Rods

	Handle Material Handle Material

Steel

Aluminum

	Point Diameter Point Diameter

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

REACH Compliant

	Width Width

5/8"

3/4"

	Handle Shape Handle Shape

Round

Square

	Finish Finish

Satin Chrome

	Punch Material Punch Material

Steel

	Graduation Marks Graduation Marks

	Grip Texture Grip Texture

Knurled

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

RoHS Compliant

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102 Products

Starrett Edge Finders

Locate edges, shoulders, center points, and lines on your workpiece.

	Tip Shape (Tip Dia.)	Body Dia.	Overall Lg.	Manufacturer Model Number	Material		Each
A	Barrel (0.2")	3/8"	2 1/2"	827A	Steel	000000000	000000
A	Barrel (6mm)	10mm	3 1/8"	827MA	Steel	000000000	00000
B	Barrel (0.2"), Point	1/2"	3 5/16"	827B	Steel	000000000	00000

Starrett Swivel-Joint Center Finder Sets

Determine tool spindle position in relation to work surface, layout lines, holes, and slots. Also known as wiggler sets. Attachments are interchangeable.

Includes	Material		Each
0.10" Diameter Disc Contact, 0.25" Ball Contact, Chuck, Needle Point, Offset Indicator Holder	Steel	0000000	000000

Starrett Marking Punch Sets

5-Punch Set

7-Punch Set

Also known as center punches, strike these with a hammer to mark hole centers in metal and other materials. Use before drilling to prevent your drill bit from wandering when starting a hole.

			Material
Number of Pieces	Includes	Manufacturer Model Number	Handle	Punch	Handle Shape	Grip Texture		Each
5	Punches with 1/16", 5/64", 3/32", 1/8", 5/32" Point Dia.	S117PC	Steel	Steel	Round	Knurled	00000000	000000
7	Punches with 1/16", 5/64", 3/32", 1/8", 5/32", 3/16", 1/4" Point Dia.	S264WB	Steel	Steel	Square	Knurled	00000000	000000

Starrett Marking Punches

Round Handle

Square Handle

Also known as center punches, strike these with a hammer to mark hole centers in metal and other materials. Use before drilling to prevent your drill bit from wandering when starting a hole.

			Material
Point Dia.	Lg.	Manufacturer Model Number	Handle	Punch	Grip Texture		Each
Round Handle
1/16"	3"	117AA	Steel	Steel	Knurled	00000000	000000
5/64"	4"	117A	Steel	Steel	Knurled	00000000	00000
3/32"	4"	117B	Steel	Steel	Knurled	00000000	00000
1/8"	4"	117C	Steel	Steel	Knurled	00000000	00000
5/32"	4"	117D	Steel	Steel	Knurled	00000000	00000
1/4"	5"	117E	Steel	Steel	Knurled	00000000	00000
Square Handle
1/16"	3"	264A	Steel	Steel	Knurled	00000000	00000
5/64"	3 1/2"	264B	Steel	Steel	Knurled	00000000	00000
3/32"	3 3/4"	264C	Steel	Steel	Knurled	00000000	00000
1/8"	4"	264D	Steel	Steel	Knurled	00000000	00000
5/32"	4 1/4"	264E	Steel	Steel	Knurled	00000000	00000
3/16"	4 1/2"	264F	Steel	Steel	Knurled	00000000	00000
1/4"	5"	264G	Steel	Steel	Knurled	00000000	00000

Starrett Spring-Impact Marking Punches

With an internal spring mechanism, these punches offer one-hand operation when marking hole centers. Turn the handle cap to adjust from light to heavy punching force. Press down on the punch handle to mark hole centers.

Punch with self-centering sleeve automatically centers the point in the hole.

Punches

Steel Handle

Aluminum Handle

Aluminum Handle with Self-Centering Sleeve

Steel Handle
Point Dia.	Lg.	Manufacturer Model Number	Punch Material	Handle Shape	Grip Texture	Features		Each
1/64"	5 1/4"	18C	Steel	Round	Knurled	__	000000	000000
1/16"	4"	18AA	Steel	Round	Knurled	__	000000	00000
1/16"	5"	18A	Steel	Round	Knurled	__	000000	00000
Aluminum Handle
1/64"	5"	818	Steel	Round	Knurled	__	00000000	00000
1/64"	5"	819	Steel	Round	Knurled	Self-Centering Sleeve	0000000	00000

Replacement Parts

Caps
Manufacturer Model Number	For Manufacturer Model Number		Each
02945-0	18C	00000000	000000
02946-0	18AA	00000000	00000
13752-0	18A	00000000	0000
Hammer Springs
PT02972	18C	00000000	0000
PT13766	18AA	00000000	0000
PT13796	18A	00000000	0000
Hammers
13764-0	18AA	00000000	00000
PT09929	18A, 818, 819	00000000	0000
PT13815	18C	00000000	00000
Handles
13751-0	18A	00000000	00000
13757-0	18C	00000000	00000
Points
PT06689	18AA	0000000	00000
PT06690	18A	0000000	00000
PT09966	819	0000000	00000
PT22256	18C, 818	00000000	00000
Retaining Rings
11445-0	819	0000000	0000
Shanks
PT13767	18C	00000000	00000
PT13768	18A	00000000	00000
PT13774	18AA	00000000	00000
Sleeves
09962-0	819	0000000	00000
Tips
13750-0	18A	00000000	00000
13761-0	18AA	00000000	00000
22278-0	18C	0000000	00000
PT09923	818	0000000	00000
Trip Pin Springs
PT13756	18A, 18C, 818, 819	00000000	0000
PT13765	18AA	00000000	0000
Trip Pins
PT13753	18A, 18C, 818, 819	00000000	00000
PT13762	18AA	00000000	0000

Edge Scribing Compasses

Mark and transfer distances from the outer edge of an object. An offset divider leg with adjustable point sits on the surface of an object while the outside-caliper style leg reaches around the edge.

Steel
Max. Circle Dia.	Leg Lg.	Marker Type		Each
10 5/8"	6"	Scribing Point	0000000	000000

Starrett High-Accuracy Combination Squares

Replace your try square, miter square, depth gauge, height gauge, center-point finder, and level. The blade on these squares meets Fed. Spec. GGG-R-791H, which establishes uniform standards for accuracy, graduations, and size. Blades are labeled with numeric increments that are less than 1" for quick reading. All have wear-resistant etched markings. Protractor head measures angles.

Blade with Square Head and Center Head

Inch

				Blade				Graduation
Blade Lg.	Front Grad. Marks (Increments)	Back Grad. Marks (Increments)	Accuracy	Wd.	Thick.	Material	Color	Color	Mark Style	Head Lg.		Each
Cast Iron Heads
Inch
4"	32nds (4/32"), 64ths (8/64")	8ths (1"), 16ths (1")	-0.002" to +0.004"	5/8"	1/16"	Satin-Chrome Steel	Silver	Black	Etched	2 1/4"	0000000	0000000
Hardened Steel Heads
Inch
4"	32nds (4/32"), 64ths (8/64")	8ths (1"), 16ths (1")	-0.002" to +0.004"	5/8"	1/16"	Satin-Chrome Steel	Silver	Black	Etched	2 1/4"	0000000	000000

Replacement Lockbolt for Square and Center Heads

0000000

Each

000000

Blade with Square Head with Built-in Level, Center Head, and Scriber

Inch

				Blade				Graduation
Blade Lg.	Front Grad. Marks (Increments)	Back Grad. Marks (Increments)	Accuracy	Wd.	Thick.	Material	Color	Color	Mark Style	Head Lg.		Each
Cast Iron Heads
Inch
6"	32nds (4/32"), 64ths (8/64")	8ths (1"), 16ths (1")	-0.002" to +0.004"	3/4"	5/64"	Satin-Chrome Steel	Silver	Black	Etched	2 13/32"	0000000	0000000
12"	32nds (4/32"), 64ths (8/64")	8ths (1"), 16ths (1")	-0.0035" to +0.005"	1"	3/32"	Satin-Chrome Steel	Silver	Black	Etched	4 1/2"	0000000	000000
12"	32nds (4/32"), 64ths (8/64")	50ths (1/10"), 100ths (1/10")	-0.0035" to +0.005"	1"	3/32"	Satin-Chrome Steel	Silver	Black	Etched	4 1/2"	0000000	000000
24"	32nds (4/32"), 64ths (8/64")	8ths (1"), 16ths (1")	-0.0035" to +0.007"	1"	3/32"	Satin-Chrome Steel	Silver	Black	Etched	4 1/2"	0000000	000000
Hardened Steel Heads
Inch
6"	32nds (4/32"), 64ths (8/64")	8ths (1"), 16ths (1")	-0.002" to +0.004"	3/4"	5/64"	Satin-Chrome Steel	Silver	Black	Etched	2 13/32"	0000000	000000
12"	32nds (4/32"), 64ths (8/64")	8ths (1"), 16ths (1")	-0.0035" to +0.005"	1"	3/32"	Satin-Chrome Steel	Silver	Black	Etched	3 5/8"	0000000	000000
18"	32nds (4/32"), 64ths (8/64")	8ths (1"), 16ths (1")	-0.0035" to +0.006"	1"	3/32"	Satin-Chrome Steel	Silver	Black	Etched	3 5/8"	0000000	000000
24"	32nds (4/32"), 64ths (8/64")	8ths (1"), 16ths (1")	-0.0035" to +0.007"	1"	3/32"	Satin-Chrome Steel	Silver	Black	Etched	3 5/8"	0000000	000000

Replacement Lockbolt for Square, Center, and Protractor Heads	0000000	Each	00000
Replacement Lockbolt for Square and Center Heads	0000000	Each	00000
Replacement Lockbolt for Center Heads	0000000	Each	00000

Blade with Square Head with Built-in Level, Center Head, Protractor Head, and Scriber

Inch

				Blade				Graduation			Cast Iron Heads
Blade Lg.	Front Grad. Marks (Increments)	Back Grad. Marks (Increments)	Accuracy	Wd.	Thick.	Material	Color	Color	Mark Style	Head Lg.		Each
Inch
12"	32nds (4/32"), 64ths (8/64")	8ths (1"), 16ths (1")	-0.0035" to +0.005"	1"	3/32"	Steel	Silver	Black	Etched	4 1/2"	0000000	0000000
18"	32nds (4/32"), 64ths (8/64")	8ths (1"), 16ths (1")	-0.0035" to +0.006"	1"	3/32"	Steel	Silver	Black	Etched	4 1/2"	0000000	000000
24"	32nds (4/32"), 64ths (8/64")	8ths (1"), 16ths (1")	-0.0035" to +0.007"	1"	3/32"	Steel	Silver	Black	Etched	4 1/2"	0000000	000000

Replacement Lockbolt for Square, Center, and Protractor Heads

0000000

Each

00000

Blade with Square Head with Built-in Level, Center Head, Reversible Protractor Head, and Scriber


	Inch
	Inch/Metric

				Blade				Graduation
Blade Lg.	Front Grad. Marks (Increments)	Back Grad. Marks (Increments)	Accuracy	Wd.	Thick.	Material	Color	Color	Mark Style	Head Lg.		Each
Cast Iron Heads
Inch
12"	32nds (4/32"), 64ths (8/64")	8ths (1"), 16ths (1")	-0.0035" to +0.005"	1"	3/32"	Steel	Silver	Black	Etched	4 1/2"	0000000	0000000
12"	32nds (4/32"), 64ths (8/64")	50ths (1/10"), 100ths (1/10")	-0.0035" to +0.005"	1"	3/32"	Steel	Silver	Black	Etched	4 1/2"	0000000	000000
18"	32nds (4/32"), 64ths (8/64")	8ths (1"), 16ths (1")	-0.0035" to +0.006"	1"	3/32"	Steel	Silver	Black	Etched	4 1/2"	0000000	000000
24"	32nds (4/32"), 64ths (8/64")	8ths (1"), 16ths (1")	-0.0035" to +0.007"	1"	3/32"	Steel	Silver	Black	Etched	4 1/2"	0000000	000000
Inch/Metric
11 3/4"/300mm	1/2 mm (10 mm), 32nds (4/32")	Millimeters (10 mm), 64ths (8/64")	-0.0035" to +0.005"/-0.09 mm to +0.15 mm	1"	3/32"	Steel	Silver	Black	Etched	4 1/2"	0000000	000000
23 1/2"/600mm	1/2 mm (10 mm), 32nds (4/32")	Millimeters (10 mm), 64ths (8/64")	-0.0035" to +0.007"/-0.11 mm to +0.25 mm	1"	3/32"	Steel	Silver	Black	Etched	4 1/2"	0000000	000000
Hardened Steel Heads
Inch
12"	32nds (4/32"), 64ths (8/64")	8ths (1"), 16ths (1")	-0.0035" to +0.005"	1"	3/32"	Satin-Chrome Steel	Silver	Black	Etched	3 5/8"	0000000	000000
12"	32nds (4/32"), 64ths (8/64")	50ths (1/10"), 100ths (1/10")	-0.0035" to +0.005"	1"	3/32"	Satin-Chrome Steel	Silver	Black	Etched	3 5/8"	0000000	000000
18"	32nds (4/32"), 64ths (8/64")	8ths (1"), 16ths (1")	-0.0035" to +0.006"	1"	3/32"	Satin-Chrome Steel	Silver	Black	Etched	3 5/8"	0000000	000000
18"	32nds (4/32"), 64ths (8/64")	50ths (1/10"), 100ths (1/10")	-0.0035" to +0.006"	1"	3/32"	Satin-Chrome Steel	Silver	Black	Etched	3 5/8"	0000000	000000
24"	32nds (4/32"), 64ths (8/64")	8ths (1"), 16ths (1")	-0.0035" to +0.007"	1"	3/32"	Satin-Chrome Steel	Silver	Black	Etched	3 5/8"	0000000	000000
24"	32nds (4/32"), 64ths (8/64")	50ths (1/10"), 100ths (1/10")	-0.0035" to +0.007"	1"	3/32"	Satin-Chrome Steel	Silver	Black	Etched	3 5/8"	0000000	000000
Inch/Metric
11 3/4"/300mm	1/2 mm (10 mm), 32nds (4/32")	Millimeters (10 mm), 64ths (8/64")	-0.0035" to +0.005"/-0.09 mm to +0.15 mm	1"	3/32"	Satin-Chrome Steel	Silver	Black	Etched	3 5/8"	0000000	000000
23 1/2"/600mm	1/2 mm (10 mm), 32nds (4/32")	Millimeters (10 mm), 64ths (8/64")	-0.0035" to +0.007"/-0.11 mm to +0.25 mm	1"	3/32"	Satin-Chrome Steel	Silver	Black	Etched	3 5/8"	0000000	000000

Replacement Lockbolt for Square, Center, and Protractor Heads

0000000

Each

00000

Starrett High-Accuracy Combination Square Heads

Attach to Starrett High-Accuracy Combination Square Blades with the included lockbolts. Center head identifies the center on pipes, rods, and shafts.

Hardened-steel heads are more durable and last longer than cast iron heads.

Center Head

Cast Iron
Component	For Blade Lgs.		Each
Center Head	4"	0000000	000000
Center Head	6"	0000000	00000
Center Head	12"-48"	0000000	00000
Hardened Steel
Center Head	4"	0000000	00000
Center Head	6"	0000000	000000
Center Head	12"-48"	0000000	00000

Replacement Lockbolts

For Head Style	For Blade Lgs.		Each
Center	6"	0000000	000000
Square, Center	4"	0000000	00000
Square, Center	6"	0000000	00000
Square, Center, Protractor	12"-36"/300 mm-600 mm	0000000	0000

Starrett High-Accuracy Combination Square Blades

Inch

Inch/Metric

Use these blades with Starrett High-Accuracy Combination Square Heads. They meet Fed. Spec. GGG-R-791H, which establishes uniform standards for accuracy, graduations, and size. Blades are labeled with numeric increments that are less than 1" for quick reading. All have wear-resistant etched markings.

Satin-chrome finish is corrosion resistant and reduces glare.

							Graduation
Lg.	Front Graduation Marks (Numeric Increments)	Back Graduation Marks (Numeric Increments)	Accuracy	Wd.	Thick.	Color	Color	Mark Style		Each
Inch
Satin-Chrome Steel
4"	32nds (4/32"), 64ths (8/64")	8ths (1"), 16ths (1")	-0.002" to +0.004"	5/8"	1/16"	Silver	Black	Etched	0000000	000000
4"	32nds (4/32"), 64ths (8/64")	50ths (1/10"), 100ths (1/10")	-0.002" to +0.004"	5/8"	1/16"	Silver	Black	Etched	0000000	00000
6"	32nds (4/32"), 64ths (8/64")	8ths (1"), 16ths (1")	-0.002" to +0.004"	3/4"	5/64"	Silver	Black	Etched	0000000	00000
6"	32nds (4/32"), 64ths (8/64")	50ths (1/10"), 100ths (1/10")	-0.002" to +0.004"	3/4"	5/64"	Silver	Black	Etched	0000000	00000
12"	32nds (4/32"), 64ths (8/64")	8ths (1"), 16ths (1")	-0.0035" to +0.005"	1"	3/32"	Silver	Black	Etched	0000000	00000
12"	32nds (4/32"), 64ths (8/64")	50ths (1/10"), 100ths (1/10")	-0.0035" to +0.005"	1"	3/32"	Silver	Black	Etched	0000000	00000
24"	32nds (4/32"), 64ths (8/64")	8ths (1"), 16ths (1")	-0.0035" to +0.007"	1"	3/32"	Silver	Black	Etched	0000000	000000
24"	32nds (4/32"), 64ths (8/64")	50ths (1/10"), 100ths (1/10")	-0.0035" to +0.007"	1"	3/32"	Silver	Black	Etched	0000000	000000
36"	32nds (4/32"), 64ths (8/64")	8ths (1"), 16ths (1")	-0.0035" to +0.007"	1"	3/32"	Silver	Black	Etched	0000000	000000
Inch/Metric
Satin-Chrome Steel
11 3/4"/300mm	1/2 mm (10 mm), 32nds (4/32")	Millimeters (10 mm), 64ths (8/64")	-0.0035" to +0.005"/-0.09 mm to +0.15 mm	1"	3/32"	Silver	Black	Etched	0000000	00000
23 1/2"/600mm	1/2 mm (10 mm), 32nds (4/32")	Millimeters (10 mm), 64ths (8/64")	-0.0035" to +0.007"/-0.11 mm to +0.25 mm	1"	3/32"	Silver	Black	Etched	0000000	000000

Threads per Inch and Center Identifiers

Identify threads per inch on external threads and find the center of your workpiece to line up thread-cutting tools. This identifier has a corrosion-resistant satin-chrome finish that reduces glare.

Inch
For Use With	For Thread Type	For Thread Location	For Threads per Inch	Lg.	Wd.	Thick.		Each
Satin-Chrome Steel
Screws, Bolts, Threaded Rods	UNC/UNF	External	14, 20, 24, 32	2 1/4"	3/4"	3/64"	0000000	000000