Thread Check Catalog 2023

API (American Petroleum Institute) GAGES

Thread Check, Inc. offers API Thread Gages to Spec 5B, Spec 7-2, Spec 11B, Spec 11AX as well as many other premium, non-preferred, and proprietary connections. Our engineering staff have served on various API gaging subcommittees and have worked in the energy industry for many decades. Thread Check's expert engineers can assist you with engineering and building custom gages. Thread Check is a proud member of the American Petroleum Institute. Contact us for pricing and availability by either phone or email.

All API gages include long form calibration.

Buttress Thread Casing - BTC - Thread Plug and Ring Gages API Spec 5B (Priced on Request) Description Order Number 4-1/2" API Buttress Thread Casing Plug Gage BTC-4-1/2-P 4-1/2" API Buttress Thread Casing Ring Gage BTC-4-1/2-R 5-1/2" API Buttress Thread Casing Plug Gage BTC-5-1/2-P 5-1/2" API Buttress Thread Casing Ring Gage BTC-5-1/2-R 6-5/8" API Buttress Thread Casing Plug Gage BTC-6-5/8-P 6-5/8" API Buttress Thread Casing Ring Gage BTC-6-5/8-R 7" API Buttress Thread Casing Plug Gage BTC-7-P 7" API Buttress Thread Casing Ring Gage BTC-7-R 7-5/8" API Buttress Thread Casing Plug Gage BTC-7-5/8-P 7-5/8" API Buttress Thread Casing Ring Gage BTC-7-5/8-R 8-5/8" API Buttress Thread Casing Plug Gage BTC-8-5/8-P 8-5/8" API Buttress Thread Casing Ring Gage BTC-8-5/8-R 9-5/8" API Buttress Thread Casing Plug Gage BTC-9-5/8-P 9-5/8" API Buttress Thread Casing Ring Gage BTC-9-5/8-R 10-3/4" API Buttress Thread Casing Plug Gage BTC-10-3/4-P 10-3/4" API Buttress Thread Casing Ring Gage BTC-10-3/4-R 11-3/4" API Buttress Thread Casing Plug Gage BTC-11-3/4-P 11-3/4" API Buttress Thread Casing Ring Gage BTC-11-3/4-R 13-3/8" API Buttress Thread Casing Plug Gage BTC-13-3/8-P 13-3/8" API Buttress Thread Casing Ring Gage BTC-13-3/8-R* 16" API Buttress Thread Casing Plug Gage BTC-16-P** 16" API Buttress Thread Casing Ring Gage BTC-16-R 18-5/8" API Buttress Thread Casing Plug Gage BTC-18-5/8-P 18-5/8" API Buttress Thread Casing Ring Gage BTC-18-5/8-R 20" API Buttress Thread Casing Plug Gage BTC-20-P 20" API Buttress Thread Casing Ring Gage BTC-20-R

*Taper on 13 3/8" and smaller = .0625 inches per inch **Taper on 16" and larger = .0833 inches per inch

Casings are pipe run from the surface with the purpose of lining the walls of a drilled well. API Buttress thread casings may be furnished with a buttress thread and with or without coupling. Coupling threads, gauging practice and thread inspection should conform to the requirements of API Spec 5B. Thread Check, Inc. offers the complete range of API Buttress Thread Plug and Ring Gages to API Spec 5B.

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