Gages are Made to ANSI/ASME B1.20.1 (1983)
The small end of the ring gage is required to be flush with the small end of the pipe within a tolerance of plus or minus one turn.
- Click HERE for Pitch Diameter Chart
Pipe Thread Ring Gages - NPT - NPTF - ANPT
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THREAD SIZE:
NPT, NPTF or ANPT:
| Item No. | THREAD SIZE | NPT, NPTF or ANPT | Material | Our Price | QTY |
|---|---|---|---|---|---|
| NPT L1 | 1/16" - 27 | NPT - L1 NPT Basic | Hardened Steel | $164.00 | |
| NPTF L1 | 1/16" - 27 | NPTF - L1 Basic | Hardened Steel | $165.00 | |
| NPTF L2 | 1/16" - 27 | NPTF - L2 Basic | Hardened Steel | $253.00 | |
| NPTF 6 Step | 1/16" - 27 | NPTF 6 Step Crest Check | Hardened Steel | $294.00 | |
| L1 ANPT | 1/16" - 27 | ANPT - L1 Basic | Hardened Steel | $204.00 | |
| L2 ANPT | 1/16" - 27 | ANPT - L2 Basic | Hardened Steel | $249.00 | |
| ANPT 6 Step | 1/16" - 27 | ANPT - 6 Step Crest Check | Hardened Steel | $314.00 | |
| NPT L1 | 1/8" - 27 | NPT - L1 NPT Basic | Hardened Steel | $114.00 | |
| NPTF L1 | 1/8" - 27 | NPTF - L1 Basic | Hardened Steel | $104.00 | |
| NPTF L2 | 1/8" - 27 | NPTF - L2 Basic | Hardened Steel | $232.00 | |
| NPTF 6 Step | 1/8" - 27 | NPTF 6 Step Crest Check | Hardened Steel | $294.00 | |
| L1 ANPT | 1/8" - 27 | ANPT - L1 Basic | Hardened Steel | $143.00 | |
| L2 ANPT | 1/8" - 27 | ANPT - L2 Basic | Hardened Steel | $224.00 | |
| ANPT 6 Step | 1/8" - 27 | ANPT - 6 Step Crest Check | Hardened Steel | $314.00 | |
| NPT L1 | 1/4" - 18 | NPT - L1 NPT Basic | Hardened Steel | $121.00 | |
| NPTF L1 | 1/4" - 18 | NPTF - L1 Basic | Hardened Steel | $133.00 | |
| NPTF L2 | 1/4" - 18 | NPTF - L2 Basic | Hardened Steel | $250.00 | |
| NPTF 6 Step | 1/4" - 18 | NPTF 6 Step Crest Check | Hardened Steel | $294.00 | |
| L1 ANPT | 1/4" - 18 | ANPT - L1 Basic | Hardened Steel | $174.00 | |
| L2 ANPT | 1/4" - 18 | ANPT - L2 Basic | Hardened Steel | $238.00 | |
| ANPT 6 Step | 1/4" - 18 | ANPT - 6 Step Crest Check | Hardened Steel | $314.00 | |
| L1 NPT | 3/8" - 18 | NPT - L1 NPT Basic | Hardened Steel | $139.00 | |
| NPTF L1 | 3/8" - 18 | NPTF - L1 Basic | Hardened Steel | $131.00 | |
| NPTF L2 | 3/8" - 18 | NPTF - L2 Basic | Hardened Steel | $245.00 | |
| NPTF 6 Step | 3/8" - 18 | NPTF 6 Step Crest Check | Hardened Steel | $286.00 | |
| L1 ANPT | 3/8" - 18 | ANPT - L1 Basic | Hardened Steel | $186.00 | |
| L2 ANPT | 3/8" - 18 | ANPT - L2 Basic | Hardened Steel | $242.00 | |
| ANPT 6 Step | 3/8" - 18 | ANPT - 6 Step Crest Check | Hardened Steel | $314.00 | |
| NPT L1 | 1/2" - 14 | NPT - L1 NPT Basic | Hardened Steel | $155.00 | |
| NPTF L1 | 1/2" - 14 | NPTF - L1 Basic | Hardened Steel | $155.00 | |
| NPTF L2 | 1/2" - 14 | NPTF - L2 Basic | Hardened Steel | $255.00 | |
| NPTF 6 Step | 1/2" - 14 | NPTF 6 Step Crest Check | Hardened Steel | $286.00 | |
| L1 ANPT | 1/2" - 14 | ANPT - L1 Basic | Hardened Steel | $179.00 | |
| L2 ANPT | 1/2" - 14 | ANPT - L2 Basic | Hardened Steel | $251.00 | |
| ANPT 6 Step | 1/2" - 14 | ANPT - 6 Step Crest Check | Hardened Steel | $314.00 | |
| NPT L1 | 3/4" - 14 | NPT - L1 NPT Basic | Hardened Steel | $181.00 | |
| NPTF L1 | 3/4" - 14 | NPTF - L1 Basic | Hardened Steel | $172.00 | |
| NPTF L2 | 3/4" - 14 | NPTF - L2 Basic | Hardened Steel | $284.00 | |
| NPTF 6 Step | 3/4" - 14 | NPTF 6 Step Crest Check | Hardened Steel | $325.00 | |
| L1 ANPT | 3/4" - 14 | ANPT - L1 Basic | Hardened Steel | $195.00 | |
| L2 ANPT | 3/4" - 14 | ANPT - L2 Basic | Hardened Steel | $263.00 | |
| ANPT 6 Step | 3/4" - 14 | ANPT - 6 Step Crest Check | Hardened Steel | $350.00 | |
| NPT L1 | 1" - 11 1/2 | NPT - L1 NPT Basic | Hardened Steel | $210.00 | |
| NPTF L1 | 1" - 11 1/2 | NPTF - L1 Basic | Hardened Steel | $205.00 | |
| NPTF L-2 | 1" - 11 1/2 | NPTF - L2 Basic | Hardened Steel | $303.00 | |
| NPTF 6 Step | 1" - 11 1/2 | NPTF 6 Step Crest Check | Hardened Steel | $343.00 | |
| L1 ANPT | 1" - 11 1/2 | ANPT - L1 Basic | Hardened Steel | $245.00 | |
| L2 ANPT | 1" - 11 1/2 | ANPT - L2 Basic | Hardened Steel | $283.00 | |
| ANPT 6 Step | 1" - 11 1/2 | ANPT - 6 Step Crest Check | Hardened Steel | $350.00 | |
| NPT L1 | 1 1/4" - 11 1/2 | NPT - L1 NPT Basic | Hardened Steel | $216.00 | |
| NPTF L1 | 1 1/4" - 11 1/2 | NPTF - L1 Basic | Hardened Steel | $195.00 | |
| NPTF L2 | 1 1/4" - 11 1/2 | NPTF - L2 Basic | Hardened Steel | $320.00 | |
| NPTF 6 Step | 1 1/4" - 11 1/2 | NPTF 6 Step Crest Check | Hardened Steel | $353.00 | |
| L1 ANPT | 1 1/4" - 11 1/2 | ANPT - L1 Basic | Hardened Steel | $225.00 | |
| L-2 ANPT | 1 1/4" - 11 1/2 | ANPT - L2 Basic | Hardened Steel | $284.00 | |
| ANPT 6 Step | 1 1/4" - 11 1/2 | ANPT - 6 Step Crest Check | Hardened Steel | $316.00 | |
| NPT L1 | 1 1/2" - 11 1/2 | NPT - L1 NPT Basic | Hardened Steel | $272.00 | |
| NPTF L1 | 1 1/2" - 11 1/2 | NPTF - L1 Basic | Hardened Steel | $257.00 | |
| NPTF L2 | 1 1/2" - 11 1/2 | NPTF - L2 Basic | Hardened Steel | $350.00 | |
| NPTF 6 Step | 1 1/2" - 11 1/2 | NPTF 6 Step Crest Check | Hardened Steel | $422.00 | |
| L1 ANPT | 1 1/2" - 11 1/2 | ANPT - L1 Basic | Hardened Steel | $269.00 | |
| L2 ANPT | 1 1/2" - 11 1/2 | ANPT - L2 Basic | Hardened Steel | $330.00 | |
| ANPT 6 Step | 1 1/2" - 11 1/2 | ANPT - 6 Step Crest Check | Hardened Steel | $387.00 | |
| NPT L1 | 2" 11 1/2 | NPT - L1 NPT Basic | Hardened Steel | $316.00 | |
| NPTF L1 | 2" 11 1/2 | NPTF - L1 Basic | Hardened Steel | $393.00 | |
| NPTF L2 | 2" 11 1/2 | NPTF - L2 Basic | Hardened Steel | $393.00 | |
| NPTF 6 Step | 2" 11 1/2 | NPTF 6 Step Crest Check | Hardened Steel | $449.00 | |
| L1 ANPT | 2" 11 1/2 | ANPT - L1 Basic | Hardened Steel | $407.00 | |
| L2 ANPT | 2" 11 1/2 | ANPT - L2 Basic | Hardened Steel | $349.00 | |
| ANPT 6 Step | 2" 11 1/2 | ANPT - 6 Step Crest Check | Hardened Steel | $442.00 | |
| NPT L1 | 2 1/2" - 8 | NPT - L1 NPT Basic | Hardened Steel | $370.00 | |
| NPTF L1 | 2 1/2" - 8 | NPTF - L1 Basic | Hardened Steel | $410.00 | |
| NPTF L2 | 2 1/2" - 8 | NPTF - L2 Basic | Hardened Steel | $470.00 | |
| NPTF 6 Step | 2 1/2" - 8 | NPTF 6 Step Crest Check | Hardened Steel | $511.00 | |
| L1 ANPT | 2 1/2" - 8 | ANPT - L1 Basic | Hardened Steel | $426.00 | |
| L2 ANPT | 2 1/2" - 8 | ANPT - L2 Basic | Hardened Steel | $422.00 | |
| ANPT 6 Step | 2 1/2" - 8 | ANPT - 6 Step Crest Check | Hardened Steel | $517.00 | |
| NPT L1 | 3" - 8 | NPT - L1 NPT Basic | Hardened Steel | $476.00 | |
| NPTF L1 | 3" - 8 | NPTF - L1 Basic | Hardened Steel | $444.00 | |
| NPTF L2 | 3" - 8 | NPTF - L2 Basic | Hardened Steel | $549.00 | |
| NPTF 6 Step | 3" - 8 | NPTF 6 Step Crest Check | Hardened Steel | $627.00 | |
| L1 ANPT | 3" - 8 | ANPT - L1 Basic | Hardened Steel | $450.00 | |
| L2 ANPT | 3" - 8 | ANPT - L2 Basic | Hardened Steel | $487.00 | |
| ANPT 6 Step | 3" - 8 | ANPT - 6 Step Crest Check | Hardened Steel | $600.00 |
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