Rotary Sub Adapters

Stock Subs

The Subs listed below are what we consider to be stock standard sizes and the working length will accept standard break out flats. All of our subs are manufactured from 4142 heat treated alloy steel on computerized lathes enabling us to offer better pricing and availability. Many other sizes are available in a multitude of configurations from the over 600 thread gages we have in stock. For quantities of ten or more please call us for special pricing.

Description Part # O.D. X I.D. Working Length Lbs. Kg
Pin to Pin
2 3/8″ IF Pin to 2 3/8″ IF Pin SPPM238IF238IF 3 1/2″ x 1 1/2″ 3″
2 7/8″ IF Pin to 2 7/8″ IF Pin SPPM278IF278IF 2 1/4″
2 7/8″ IF Pin to MR Pin SPPM278IFMR 4″ x 1 1/2″ 2 1/2″
3 1/2″ IF Pin to 2 3/8″ IF Pin SPPM312IF238IF 12″
MJR Pin to MJR Pin SPPMMJRMJR 2 1/2″ x 1 1/4″ 3 1/2″
MR Pin to MR Pin SPPMMRMR 3 1/4″ x 1 1/2″ 3 1/4″
Pin to Box
3 1/2″ API Reg. Pin to 4 1/2″ API Reg. Box SPB312R412R 4 1/2″ – 5 1/2″ BN x 1 1/2″ 9″
4 1/2″ API Reg. Pin to 6 5/8″ API Reg. Box SPBM412R658R 5 1/2″ – 7 3/4″ BN x 2 1/4″ 10 3/4″
Box to Box
MJR Box to 2 3/8″ API Reg. Box SBBMJR238R 2 3/4″ – 3 1/8″ BN x 1 1/2″ 10″
MJR Box to 2 7/8″ API Reg. Box SBBMJR278R 2 3/4″ – 3 3/4″ BN x 1 1/2″ 10″
MJR Box to 3 1/2″ API Reg. Box SBBMJR312R 2 3/4″ – 4 1/2″ BN x 1 1/2″ 10″
MJR Box to 4 1/2″ API Reg. Box SBBMJR412R 2 3/4″ – 5 1/2″ BN x 1 1/2″ 12″
MR Box to 2 3/8″ API Reg. Box SBBMR238R 3 1/4″ x 1 1/2″ 10″
MR Box to 2 7/8″ API Reg. Box SBBMR278R 3 1/4″ – 3 3/4″ BN x 2″ 10″
MR Box to 3 1/2″ API Reg. Box SBBMR312R 3 1/4″ – 4 1/2″ BN x 2″ 10″
MR Box to 4 1/2″ API Reg. Box SBBMR412R 3 1/4″ – 5 1/2″ BN x 2″ 12″
2 3/8″ IF Box to 2 3/8″ API Reg. Box SBB238IF238R 3 1/2″ x 1 1/2″ 10″
2 3/8″ IF Box to 2 7/8″ API Reg. Box SBB238IF278R 3 1/2″ – 3 3/4″ BN x 2″ 10″
2 3/8″ IF Box to 3 1/2″ API Reg. Box SBB238IF312R 3 1/2″ – 4 1/2″ BN x 2″ 10″
2 3/8″ IF Box to 4 1/2″ API Reg. Box SBB238IF412R 3 1/2″ – 5 1/2″ BN x 2″ 10″
2 7/8″ IF Box to 3 1/2″ API Reg. Box SBB278IF312R 4 1/2″ x 2″ 10″
2 7/8″ IF Box to 4 1/2″ API Reg. Box SBB278IF412R 4 1/2″ – 5 1/2″ BN x 2″ 10″

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