Project Description

Holte Subs -Well, Reverse Circulation, and Foundation Drilling

Holte subs are machined out of the toughest grades of steel available and heat treated in house to ensure lasting strength and durability.  We stock a wide array of subs standard to the industry and also have the ability to quickly manufacture custom sizes and configurations.

  • Drilling Adapter Subs
  • Drill Adapter Sub being machined
  • Well and Foundation Drilling Adapter Subs

Subs | Sizes & Part Numbers

Example Sub Part Numbers

Subs 
DescriptionPart #
(Pin x Pin) 2-7/8" IF Pin x 2-7/8" IF Pin300001
(Pin x Pin) 2-7/8" API Pin x 2-7/8" IF Pin300002
(Pin x Pin) 2-7/8 IF Pin x 3-1/2" API Pin300003
(Pin x Pin) 3-1/2" API Pin x 3-1/2" API Pin300004
(Pin x Box) 2-7/8" IF Pin x 2-7/8" IF Box300005
(Pin x Box) 2-7/8" IF Pin x 3-1/2" API Box300006
(Pin x Box) 3-1/2" API Pin x 2-7/8" IF Box300007
(Pin x Box) 3-1/2" API Pin x 3-1/2" API Box300008
(Box x Box) 2-7/8" IF Box x 2-7/8" IF Box300009
(Box x Box) 2-7/8" IF Box x 3-1/2" API Box300010
(Box x Box) 2-7/8" IF Box x 4-1/2" API Box300011
(Box x Box) 3-1/2" API Box x 2-7/8" API Box300012
(Box x Box) 3-1/2" API Box x 3-1/2" API Box300013
(Box x Box) 3-1/2" API Box x 4-1/2" API Box300014
Crossover Sub 7"RC CSR Box x 6-5/8" API Reg. Box with 3" Wide x 9" Long Slots300015
Sub Adapter from 4-1/2" RC Box x 3-1/2" API Pin300016
4-1/2" CSR Pin x 7" CSR Pin Sub Adapter300017
7" CSR Pin x 7" CSR Sub Adapter300018
Stabilizers310015
Bit Stabilizers310016
Air Needle/Center tube (Small)100956
Air Needle/ Center Tube (Large)100957