Check proper form and pitch by placing the correct profile template into the threads. By shining a light behind the profile template, it’s possible to detect any steps or signs of a chipped insert. A template that stands too far out of the threads or allows excess light to shine through can be an indication of lead error. Sweeping the profile template along the helix of the threads helps find burrs or debris.
Fyou Gauge manufactures precision straight thread profile gages for the quick identification of product thread forms. Specify
the pitch of the thread to be inspected when ordering. Special form profiles are available and are quoted upon request.
| Oilfied Union Thread Form Inspection Gages | |||||
| Figure | Size | Thread Size-Pitch Type-Class | TPI | ASME | Profile Gage Type |
| Fig 602 | 1″ | 2-7/16″-6 ACME-2G | 6 | B 1.5 | UTP-GPA-6P |
| 1.5″ | 3-3/8″-4 ACME-2G | 4 | B 1.5 | UTP-GPA-4P | |
| 2″ | 3 13/16″- 3 STUB ACME -2G | 3 | B 1.8 | UTP-SA-3P | |
| 3″ | 5 3/8″- 3 STUB ACME-2G | 3 | B 1.8 | UTP-SA-3P | |
| 4″ | 6 1/4″- 3 STUB ACME -2G | 3 | B 1.8 | UTP-SA-3P | |
| Figure | Size | Thread Size-Pitch Type-Class | TPI | ASME | Profile Gage |
| Fig 1002 | 1″ | 2-7/16″-6 ACME-2G | 6 | B 1.5 | UTP-GPA-6P |
| 1.5″ | 3-3/8″-4 ACME-2G | 4 | B 1.5 | UTP-GPA-4P | |
| 2″ | 3 13/16″- 3 STUB ACME -2G | 3 | B 1.8 | UTP-SA-3P | |
| 3″ | 5 3/8″- 4 ACME-2G | 4 | B 1.5 | UTP-GPA-4P | |
| 4″ | 6 1/4″- 4 ACME -2G | 4 | B 1.5 | UTP-GPA-4P | |
| Figure | Size | Thread Size-Pitch Type-Class | TPI | ASME | Profile Gage |
| Fig 1502 | 1″ | 2-15/16″-3.5 ACME-2G | 3.5 | B 1.5 | UTP-GPA-3.5P |
| 1.5″ | 3-11/16″-3.5 ACME-2G | 3.5 | B 1.5 | UTP-GPA-3.5P | |
| 2″ | 4-1/8″-3 ACME-2G | 3 | B 1.5 | UTP-GPA-3P | |
| 3″ | 5 3/8″- 3.5 ACME-2G | 3.5 | B 1.5 | UTP-GPA-3.5P | |
| 4″ | 6 11/16″- 3 STUB ACME-M1 -2G | 3 | B 1.8 | UTP-SA-3P | |
| Figure | Size | Thread Size-Pitch Type-Class | TPI | ASME | Profile Gage |
| Fig 2002 | 2″ | 3 5/8″- 4 ACME -2G | 4 | B 1.5 | UTP-GPA-4P |
| 3″ | 6 11/16″- 4 ACME-2G | 4 | B 1.5 | UTP-GPA-4P | |
| Figure | Size | Thread Size-Pitch Type-Class | TPI | ASME | Profile Gage |
| Fig 2202 | 2″ | 3 5/8″- 5 ACME -2G | 5 | B 1.5 | UTP-GPA-5P |
| 3″ | 6 11/16″- 5 ACME-2G | 5 | B 1.5 | UTP-GPA-5P | |
Oilfield Union Thread Pitch Diameter Inspection
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