For Use With For Use With |
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Material Material |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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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.
For Thread Type | For Thread Location | For Pipe Size | Wd. | Ht. | Thick. | Color | Each | |
Aluminum | ||||||||
---|---|---|---|---|---|---|---|---|
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


Determine pipe size and inner and outer diameter.
Pipe, pipe fittings, and hose identifier is stainless steel for corrosion resistance.
For Use With | For Pipe Size | For Pipe Fitting Size | For Tube OD | For Hose ID | Includes | Wd. | Ht. | Thick. | Color | Each | |
Plastic | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
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 |
Thread Identifier Sets

Set includes calipers and gauges to identify external and internal threads.
Container | |||||||
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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 |
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.
For technical drawings and 3-D models, click on a part number.
Pipe Size | Pipe Size Tolerance | Hardness | Material | Each | |
Class X | |||||
---|---|---|---|---|---|
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 | 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 |
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.
For technical drawings and 3-D models, click on a part number.
Pipe Size | Pipe Size Tolerance | Hardness | Material | Each | |
Class X | |||||
---|---|---|---|---|---|
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 | -0.0005" to 0.0005" | Rockwell C60 | Tool Steel | 00000000 | 000000 |
4 | -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.
For technical drawings and 3-D models, click on a part number.
Pipe Size | Pipe Size Tolerance | Hardness | Material | Each | |
Class X | |||||
---|---|---|---|---|---|
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 | 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 |
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.
For technical drawings and 3-D models, click on a part number.
Pipe Size | Pipe Size Tolerance | Hardness | Material | Each | |
Class X | |||||
---|---|---|---|---|---|
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 | -0.0005" to 0.0005" | Rockwell C60 | Tool Steel | 00000000 | 000000 |
3 | -0.0005" to 0.0005" | Rockwell C60 | Tool Steel | 00000000 | 000000 |
4 | -0.0005" to 0.0005" | Rockwell C60 | Tool Steel | 00000000 | 00000000 |