Thread Check Catalog 2023

API (American Petroleum Institute) GAGES

Number style - NC Style - type and size of the rotary shouldered connection having the V-038R thread form. The number in the connection number is the first two digits of the pitch diameter of the pin thread at the gage point expressed in units of 2.54mm / 0.1 inches. Gauging practice and thread

NC Connections - Rotary Shouldered Connection Thread Plug and Ring Gages API Spec 7-2 (Priced on Request) Description Order Number NC10 Thread Plug Gage NC10-P NC10 Thread Ring Gage NC10-R NC12 Thread Plug Gage NC12-P NC12 Thread Ring Gage NC12-R NC13 Thread Plug Gage NC13-P NC13 Thread Ring Gage NC13-R NC16 Thread Plug Gage NC16-P NC16 Thread Ring Gage NC16-R NC26 Thread Plug Gage ( 2 3/8" IF interchangeable ) NC26-P NC26 Thread Ring Gage ( 2 3/8" IF interchangeable ) NC26-R NC31 Thread Plug Gage ( 2 7/8" IF interchangeable ) NC31-P NC31 Thread Ring Gage ( 2 7/8" IF interchangeable ) NC31-R NC35 Thread Plug Gage NC35-P NC35 Thread Ring Gage NC35-R NC38 Thread Plug Gage ( 3 1/2" IF interchangeable ) NC38-P NC38 Thread Ring Gage ( 3 1/2" IF interchangeable ) NC38-R NC40 IF Plug Gage NC40-P NC40 IF Ring Gage NC40-R NC44 IF Plug Gage NC44-P NC44 IF Ring Gage NC44-R NC46 Thread Plug Gage ( 4" IF interchangeable ) NC46-P NC46 Thread Ring Gage ( 4" IF interchangeable ) NC46-R NC50 Thread Plug Gage ( 4 1/2" IF interchangeable ) NC50-P NC50 Thread Ring Gage ( 4 1/2" IF interchangeable ) NC50-R NC56 Thread Plug Gage ( 5" IF interchangeable ) NC56-P NC56 Thread Ring Gage ( 5" IF interchangeable ) NC56-R NC61 Thread Plug Gage NC61-P NC61 Thread Ring Gage NC61-R NC70 Thread Plug Gage NC70-P NC70 Thread Ring Gage NC70-R NC77 Thread Plug Gage NC77-P NC77 Thread Ring Gage NC77-R

inspection should conform to the requirements of API Spec 7-2.

Thread Check, Inc. offers the complete range of API NC Thread Plug and Ring Gages to API Spec 7-2.

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