	For Thread Type For Thread Type

Metric

UNC

UNF

	For System of Measurement For System of Measurement

Pipe Size

Inch

Metric

	For Thread Location For Thread Location

External

Internal

	For Use With For Use With

	Pipe Size Pipe Size

	Material Material

	For Pipe Size For Pipe Size

	For Gender For Gender

Female

Male

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

DFARS Specialty Metals
COTS-Exempt

	Width Width

3 3/4"

	Height Height

3 3/4"

4 1/4"

4 1/2"

	Thickness Thickness

1/32"

7/64"

1/4"

	Color Color

	Blue
	Silver

	For Pipe Fitting Size For Pipe Fitting Size

	For Hose ID For Hose ID

	For Tube OD For Tube OD

View catalog pages (4)

Forward

How can we improve?

51 Products

Thread Identifier Sets

Set includes calipers and gauges to identify external and internal threads.

			Container
For Use With	For Thread Type	For Thread Location	Type	Material	Includes		Each
Inch, Metric, Pipe Size
Steel
Screws, Bolts, Threaded Rods, Nuts, Pipe	NPT, UNC, UNF, BSPT, BSPP, Metric	External/Internal	Folding Case	Plastic	Caliper, Instruction Book, Two Steel Angle Gauges, Two Steel Gauges	000000	000000

Pipe Thread and Thread Pitch Identifiers

In addition to checking NPT and BSPT pipe sizes, use the two included gauges for measuring thread pitch.

For Thread Type	For Pipe Size	For Gender	Wd.	Ht.	Thick.	Thread Size Identifier Material	Thread Pitch Identifier Material	Color		Each
BSPT, NPT	1/8, 1/4, 3/8, 1/2, 3/4, 1, 1 1/4, 1 1/2, 2	Female, Male	9"	4 1/4"	1/4"	Plastic	Steel	Blue	000000	00000

Pipe Thread Identifiers

Check external NPT thread size and taper.

Aluminum
For Thread Type	For Thread Location	For Pipe Size	Wd.	Ht.	Thick.	Color		Each
NPT	External	1/16, 1/8, 1/4, 3/8, 1/2	2"	3"	1/4"	Blue	000000	000000

Pipe, Tubing, and Hose Size Identifiers

For Pipe, Tubing, And Hose

For Pipe, Pipe Fittings, And Hose

Determine pipe size and inner and outer diameter.

Pipe, pipe fittings, and hose identifier is stainless steel for corrosion resistance.

Plastic
For Use With	For Pipe Size	For Pipe Fitting Size	For Tube OD	For Hose ID	Includes	Wd.	Ht.	Thick.	Color		Each
Pipe, Tubing, Hose	1/8, 1/4, 3/8, 1/2, 3/4	__	1/8", 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 5/8", 3/4", 1"	1/4", 3/8", 1/2", 3/4", 1"	Compression Fitting Chart	9"	3 3/4"	7/64"	Blue	0000000	00000
Stainless Steel
Pipe, Pipe Fittings, Hose	1/8, 1/4, 3/8, 1/2, 3/4, 1, 1 1/4, 1 1/2, 2	1/8, 1/4, 3/8, 1/2, 3/4, 1, 1 1/4, 1 1/2, 2	__	1/8", 1/4", 5/16", 3/8", 5/8", 3/4", 7/8", 1", 1 1/8", 1 1/4"	__	3 3/4"	4 1/2"	1/32"	Silver	00000000	00000

Threaded Plug Gauges for NPT Pipe Threads

A notch on the handle indicates when the internal NPT threads you’re checking are in tolerance. Gauges have a taperlock handle for quickly replacing worn gauges.

Class X
Pipe Size	Pipe Size Tolerance	Hardness	Material		Each
1/16	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	0000000	0000000
1/8	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	00000000	00000
1/4	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	00000000	00000
3/8	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	00000000	000000
1/2	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	00000000	000000
3/4	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	00000000	000000
1	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	00000000	000000
1 1/4	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	00000000	000000
1 1/2	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	00000000	000000
2	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	00000000	000000

Threaded Plug Gauges for NPT Pipe Threads with Calibration Certificate

Ensure the accuracy of internal NPT pipe thread measurements—these gauges come with a certificate of calibration traceable to NIST that states they’ve passed a test for accuracy. A notch on the handle indicates when the threads you’re checking are in tolerance. Gauges have a taperlock handle for quickly replacing worn gauges.

Class X
Pipe Size	Pipe Size Tolerance	Hardness	Material		Each
1/16	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	00000000	0000000
1/8	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	00000000	000000
1/4	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	00000000	000000
3/8	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	00000000	000000
1/2	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	00000000	000000
3/4	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	00000000	000000
1	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	00000000	000000
1 1/4	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	00000000	000000
1 1/2	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	00000000	000000
2	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	00000000	000000
2 1/2	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	00000000	000000
3-8	-0.0005" to 0.0005"	Rockwell C60	Tool Steel	00000000	000000
4-8	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	00000000	000000

Threaded Ring Gauges for NPT Pipe Threads

Check the external threads of NPT pipe to ensure they fall within tolerance.

Class X
Pipe Size	Pipe Size Tolerance	Hardness	Material		Each
1/16-27	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	0000000	0000000
1/8-27	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	00000000	000000
1/4-18	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	00000000	000000
3/8-18	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	00000000	000000
1/2-14	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	00000000	000000
3/4-14	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	00000000	000000
1-11 1/2	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	00000000	000000
1 1/4-11 1/2	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	00000000	000000
1 1/2-11 1/2	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	00000000	000000
2-11 1/2	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	00000000	000000

Threaded Ring Gauges for NPT Pipe Threads with Calibration Certificate

To ensure accuracy of external NPT pipe thread measurements, these gauges include a certificate of calibration traceable to NIST that states they’ve passed a test for accuracy.

Class X
Pipe Size	Pipe Size Tolerance	Hardness	Material		Each
1/16-27	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	00000000	0000000
1/8-27	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	00000000	000000
1/4-18	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	00000000	000000
3/8-18	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	00000000	000000
1/2-14	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	00000000	000000
3/4-14	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	00000000	000000
1-11 1/2	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	00000000	000000
1 1/4-11 1/2	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	00000000	000000
1 1/2-11 1/2	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	00000000	000000
2-11 1/2	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	00000000	000000
2 1/2-8	-0.0005" to 0.0005"	Rockwell C60	Tool Steel	00000000	000000
3-8	-0.0005" to 0.0005"	Rockwell C60	Tool Steel	00000000	000000
4-8	-0.0005" to 0.0005"	Rockwell C60	Tool Steel	00000000	000000