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Item # 1/8-27 NPSM Set Plug Go 2A, 0.3725 Inch (in) External 2A National Pipe Straight Mechanical (NPSM) Thread Setting Plug Gage Item # 1/8-27 NPSM Set Plug No Go Class 2A, 0.3689 Inch (in) External 2A National Pipe Straight Mechanical (NPSM) Thread Setting Plug Gage Item # 1/8-27 NPSM Set Plug No Go/Go Class 2A, 0.3689 to 0.3725 Inch (in) External 2A National Pipe Straight Mechanical (NPSM) Thread Setting Plug Gage Item # 1/4-18 NPSM Set Plug Go 2A, 0.4903 Inch (in) External 2A National Pipe Straight Mechanical (NPSM) Thread Setting Plug Gage Item # 1/4-18 NPSM Set Plug No Go Class 2A, 0.4859 Inch (in) External 2A National Pipe Straight Mechanical (NPSM) Thread Setting Plug Gage
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