PMC Lonestar API Thread Gages (Spec 7-2)

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Gaging & Metrology

PMC Lonestar API Thread Gages (Spec 7-2)

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Spec 7-2 Gages

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.

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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

 

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