Drill Stem Subs Specifications

Specifications - Bit Sub With Float Bore

Connection	Baker Float Valve	Length to End of Recess	Diameter of Float Recess	Baffle Plate Recess Diameter
2-3/8 REG	1R	9-1/8	1-11/16	1-5/16
2-7/8 REG	1F-2R	10	1-15/16	1-1/2
3-1/2 REG	2F-3R	10-1/2	2-7/16	1-29/32
4-1/2 REG	4R	12-13/16	3-1/2	2-15/16
6-5/8 REG	5F-6R	17	4-13/16	4-9/32
7-5/8 REG	5F-6R	17-1/4	4-13/16	4-9/32
8-5/8 REG	5F-6R	17-3/8	4-13/16	4-9/32
8-5/8 REG	6F	20-1/4	5-23/32	5-3/16
The ID of the drill collar or sub and the ID of the bit pin shall be small enough to hold valve assembly.