Starrett Center Gauges | McMaster-Carr

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Starrett

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	For Thread Type For Thread Type

UNC

UNF

	System of Measurement System of Measurement

Inch

Metric

	For Threads per Inch For Threads per Inch

	Manufacturer Model Number Manufacturer Model Number

	For Use With For Use With

Bolts

Screws

Threaded Rods

	Thickness Thickness

3/64"

	Length Length

	Width Width

3/4"

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

DFARS Specialty Metals
COTS-Exempt

	Finish Finish

Satin Chrome

	Material Material

Steel

Iron

	Blade Length Blade Length

	Blade Width Blade Width

5/8"

3/4"

	Tip Diameter Tip Diameter

0.2"

6mm

	Body Diameter Body Diameter

3/8"

1/2"

10mm

	Graduation Marks Graduation Marks

	Numeric Increments Numeric Increments

1/10"

4/32"

10 mm

	Component Component

Blade

Square Head with Built-in
Level

Center Head

Square Head

	Square Head Material Square Head Material

Iron

Steel

	Center Head Material Center Head Material

Iron

Steel

	Tip Shape Tip Shape

Barrel

Point

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

REACH Compliant

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45 Products

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

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 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
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	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
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
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 Center Heads	0000000	Each	00000
Replacement Lockbolt for Square and 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 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 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

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