Gaging & Metrology
PMC Lonestar API Thread Gages (Spec 7-2)
QUANTITY
PMC Lone Star manufactures Working, Reference and Regional Master Gages per API Specification 7-2. All Working gages are manufactured and calibrated against an API certified Reference Master Gage. PMC Lone Star is the industry leader in quality, capability and inventory of API 7-2 gages. PMC Lone Star was the gage manufacturer of choice by API to manufacture the most recent two set of Grand Master gages.
Full Hose (F.H.)
PMC Lone Star manufactures API Full Hole (F.H.) working, reference and regional master gages per API specification 7-2 for sizes from 2-7/8 to 6-5/8 inches in diameter. All working gages are manufactured and certified using a certified API reference master gage as required by the standard.
| Full Hose (F.H.) | |||
| Size | T.P.I | T.P.F | THD Form |
| 2-7/8 | 5 | 3 | V-0.040 |
| 3-1/2 | 5 | 3 | V-0.040 |
| 4 (NC40) | 4 | 2 | V-0.065 |
| 4-1/2 | 5 | 3 | V-0.040 |
| 5-1/2 | 4 | 2 | V-0.050 |
| 6-5/8 | 4 | 2 | V-0.050 |
Internal Flush (I.F)
PMC Lone Star manufactures API Internal Flush (I.F.) working, reference and regional master gages per API specification 7-2 for sizes from 2 to 6-5/8 inches in diameter. All working gages are manufactured and certified using a certified API reference master gage as required by the standard.
| Internal Flush (I.F.) | |||
| Size | T.P.I. | T.P.F. | THD Form |
| 2 | 4 | 2 | V-0.065 |
| 2-3/8 (NC26) | 4 | 2 | V-0.065 |
| 2-7/8 (NC31) | 4 | 2 | V-0.065 |
| 3-1/2 (NC38) | 4 | 2 | V-0.065 |
| 4 (NC46) (4-1/2 XH) | 4 | 2 | V-0.065 |
| 4-1/2 (NC50) (5 XH) | 4 | 2 | V-0.065 |
| 5-1/2 | 4 | 2 | V-0.065 |
| 6-5/8 | 4 | 2 | V-0.065 |
Numbered Connections (N.C)
PMC Lone Star manufactures API Numbered Connections (N.C.) working, reference and regional master gages per API specification 7-2 for sizes from 2 to 6-5/8 inches in diameter. All working gages are manufactured and certified using a certified API reference master gage as required by the standard.
| Numbered Connections (N.C) | |||
| Size | T.P.I | T.P.F | THD Form |
| NC10 | 6 | 1-1/2 | V-0.055R |
| NC12 | 6 | 1-1/2 | V-0.055R |
| NC13 | 6 | 1-1/2 | V-0.055R |
| NC16 | 6 | 1-1/2 | V-0.055R |
| NC23 | 4 | 2 | V-0.038R |
| NC26 (2-3/8 I.F.) | 4 | 2 | V-0.038R |
| NC31 (2-7/8 I.F.) | 4 | 2 | V-0.038R |
| NC35 | 4 | 2 | V-0.038R |
| NC38 (3-1/2 I.F.) | 4 | 2 | V-0.038R |
| NC40 (4 FH) | 4 | 2 | V-0.038R |
| NC44 | 4 | 2 | V-0.038R |
| NC46 | 4 | 2 | V-0.038R |
| NC50 (4-1/2 IF) (5 XH) | 4 | 2 | V-0.038R |
| NC56 | 4 | 3 | V-0.038R |
| NC61 | 4 | 3 | V-0.038R |
| NC70 | 4 | 3 | V-0.038R |
| NC77 | 4 | 3 | V-0.038R |
Regular Rotary
PMC Lone Star manufactures API Regular Rotary working, reference and regional master gages per API Specification 7-2 for sizes from 1 to 8-5/8 inches in diameter. All working gages are manufactured and certified using a certified API reference master gage as required by the standard.
| Regular Rotary | |||
| Size | T.P.I | T.P.F | THD Form |
| 1 | 6 | 1.5 | V-0.055 |
| 1-1/4 | 7 | 2 | V-0.020 |
| 1-1/2 | 6 | 1.5 | V-0.055 |
| 2-3/8 | 5 | 3 | V-0.040 |
| 2-7/8 | 5 | 3 | V-0.040 |
| 3-1/2 | 5 | 3 | V-0.040 |
| 4-1/2 | 5 | 3 | V-0.040 |
| 5-1/2 | 4 | 3 | V-0.050 |
| 6-5/8 | 4 | 3 | V-0.050 |
| 7-5/8 | 4 | 3 | V-0.050 |
| 8-5/8 | 4 | 3 | V-0.050 |
