NPSM

N.P.S.M.
SizeThreads per InchPitch DiameterRing (N.P.S.M. 2A)Set Plug (N.P.S.M. 2A)Work Plug (N.P.S.M. 2B)
Min.Max.GO MemberNOT GO MemberGO Member NOT GO Member GO MemberNOT GO Member
1/8"270.37250.3689R0125272NMGKR0125272NMGKS0125272NMGKS0125272NMGKW012527NMGKW0125272NMGK
1/4"180.49030.4859R0250182NMGKR0250182NMGKS0250182NMGKS0250182NMGKW025018NMGKW0250182NMGK
3/8"180.62560.6211R0375182NMGKR0375182NMGKS0375182NMGKS0375182NMGKW037518NMGKW0375182NMGK
1/2"140.77690.7718R0500142NMGKR0500142NMGKS0500142NMGKS0500142NMGKW050014NMGKW0500142NMGK
3/4"140.98730.982R0750142NMGKR0750142NMGKS0750142NMGKS0750142NMGKW075014NMGKW0750142NMGK
1"11-1/21.23691.2311R1000992NMGKR1000992NMGKS1000992NMGKS1000992NMGKW100099NMGKW1000992NMGK
1-1/4"11-1/21.58161.5756R1250992NMGKR1250992NMGKS1250992NMGKS1250992NMGKW125099NMGKW1250992NMGK
1-1/2"11-1/21.82051.8144R1500992NMGKR1500992NMGKS1500992NMGKS1500992NMGKW150099NMGKW1500992NMGK
2"11-1/22.29442.2882R2000992NMGKR2000992NMGKS2000992NMGKS2000992NMGKW200099NMGKW2000992NMGK
2-1/2"82.762.7526R2500082NMGKR2500082NMGKS2500082NMGKS2500082NMGKW250008NMGKW2500082NMGK
3"83.38623.3786R3000082NMGKR3000082NMGKS3000082NMGKS3000082NMGKW300008NMGKW3000082NMGK

N.P.S.F. – National Pipe Straight Fuel and N.P.S.M. – National Straight Mechanical are available in stock and ready to ship to you. NPSC, NSPL, NPSH and many other Pipe Thread Gages are available as well as special sizes — please call 1-800-825-4272 and we will gladly prepare a quote.

Please specify nominal diameter and Go or Not Go member (or both in double end handle for plug gages). Handles are not included with members unless specified. Customer specific tool numbers marked upon request.

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