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National Pipe Straight Mechanical (NPSM) Thread Ring Gages
Unit of Measure
1 2 

Item #

Item Name

Thread Size

Thread Type

External Thread 2A

Holder Number

List Price

2-11-1/2 NPSM Ring No Go Class 2A N/A 2.2882 Inch (in) External 2A National Pipe Straight Mechanical (NPSM) Thread Ring Gage N/A 2 to 11-1/2 N/A National Pipe Straight Mechanical (NPSM) N/A 2.2882 in N/A $599.00
2-11-1/2 NPSM Ring No Go/Go Class 2A N/A 2.2882 to 2.2944 Inch (in) External 2A National Pipe Straight Mechanical (NPSM) Thread Ring Gage N/A 2 to 11-1/2 N/A National Pipe Straight Mechanical (NPSM) N/A 2.2882 to 2.2944 in N/A $1,198.00
2-1/2-8 NPSM Ring Go 2A N/A 2.7600 Inch (in) External 2A National Pipe Straight Mechanical (NPSM) Thread Ring Gage N/A 2-1/2 to 8 N/A National Pipe Straight Mechanical (NPSM) N/A 2.7600 in N/A $660.00
2-1/2-8 NPSM Ring No Go Class 2A N/A 2.7526 Inch (in) External 2A National Pipe Straight Mechanical (NPSM) Thread Ring Gage N/A 2-1/2 to 8 N/A National Pipe Straight Mechanical (NPSM) N/A 2.7526 in N/A $660.00
2-1/2-8 NPSM Ring No Go/Go Class 2A N/A 2.7526 to 2.7600 Inch (in) External 2A National Pipe Straight Mechanical (NPSM) Thread Ring Gage N/A 2-1/2 to 8 N/A National Pipe Straight Mechanical (NPSM) N/A 2.7526 to 2.7600 in N/A $1,320.00
3-8 NPSM Ring Go 2A N/A 3.3862 Inch (in) External 2A National Pipe Straight Mechanical (NPSM) Thread Ring Gage N/A 3-8 N/A National Pipe Straight Mechanical (NPSM) N/A 3.3862 in N/A $810.00
3-8 NPSM Ring No Go Class 2A N/A 3.3786 Inch (in) External 2A National Pipe Straight Mechanical (NPSM) Thread Ring Gage N/A 3-8 N/A National Pipe Straight Mechanical (NPSM) N/A 3.3786 in N/A $810.00
3-8 NPSM Ring No Go/Go Class 2A N/A 3.3786 to 3.3862 Inch (in) External 2A National Pipe Straight Mechanical (NPSM) Thread Ring Gage N/A 3-8 N/A National Pipe Straight Mechanical (NPSM) N/A 3.3786 to 3.3862 in N/A $1,620.00
#N/A N/A #N/A N/A N/A N/A N/A 3 $38.50
#N/A N/A #N/A N/A N/A N/A N/A 4 $45.90
#N/A N/A #N/A N/A N/A N/A N/A 5 $59.10
#N/A N/A #N/A N/A N/A N/A N/A 6 $71.10
Unit of Measure
1 2