Adjustable Counterbores
Adjustable Counterbores allow you to drill cylidrical flat-bottomed holes while adjusting the depth of cut of the center drill. Choose from a great selection of Adjustable counterbore drills in carbide tipped or high speed steel. If you don't see the size of the Adjustable counterbore you need, give us a call at 800-346-8274. We may have other options other than what is available online.
Carbide Tipped Adjustable Counter bore with shank size same as center drill
*Center drills are sold separately
| Counterbore Diameter | Center Drill Hole Diameter | Overall Length | Part # |
|---|---|---|---|
| 1-3/8" | 7/16" | 2" | HS123CT-138716 |
High Speed Steel Adjustable Counter bore with shank size same as center drill
*Center drills are sold seperately
| Counterbore Diameter | Center Drill Hole Diameter | Overall Length | Part # |
|---|---|---|---|
| 3/8" | 3/16" | 1 1/2" | HS123-62301 |
| 1/2" | 1/4" | 1 1/2" | HS123-62304 |
| 3/4" | 1/4" | 2" | HS123-62307 |
| 3/4" | 5/16" | 2" | HS123-62308 |
| 7/8" | 5/16" | 2" | HS123-62309 |
| 7/8" | 3/8" | 2" | HS123-62310 |
| 7/8" | 7/16" | 2" | HS123-62311 |
| 1" | 5/16" | 2" | HS123-62312 |
| 1" | 3/8" | 2" | HS123-62313 |
| 1" | 7/16" | 2" | HS123-62313-716 |
| 1" | 1/2" | 2" | HS123-62314 |
| 1-1/4" | 1/2" | 2" | HS123-62316 |
| 1-1/2" | 1/2" | 2" | HS123-62318 |
High Speed Steel Adjustable Counterbore, 1/2" Shank
| Counterbore Diameter | Inside Diameter | Twist length | Overall Length | Part # |
|---|---|---|---|---|
| 3/8" | 1/8" | 2-1/2" | 4-1/2" | HS122-62261 |
| 3/8" | 5/32" | 2-1/2" | 4-1/2" | HS122-62262 |
| 3/8" | 3/16" | 2-1/2" | 4-1/2" | HS122-62263 |
| 1/2" | 3/16" | 2-1/2" | 4-1/2" | HS122-62268 |
| 1/2" | 7/32" | 2-1/2" | 4-1/2" | HS122-62269 |
| 1/2" | 1/4" | 2-1/2" | 4-1/2" | HS122-62270 |
| 5/8" | 3/16" | 2-1/2" | 4-1/2" | HS122-62273 |
| 5/8" | 5/16" | 2-1/2" | 4-1/2" | HS122-62276 |
| 3/4" | 3/16" | 2-1/2" | 4-1/2" | HS122-62277 |
| 3/4" | 5/16" | 2-1/2" | 4-1/2" | HS122-62280 |
| 3/4" | 3/8" | 2-1/2" | 4-1/2" | HS122-62281 |
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Carbide Processors
Clamp-On Adjustable CounterBore, 1-1/4 OD, 1/2 ID, Carbide Processors HS123-62316Adjustable Counterbore, Counterboring Flat Bottom Holes- 1 1/4 Cutting Diameter, 1/2 Center Drill Di…
MSRP: $108.33$78.86 -
Carbide Processors
Clamp-On Adjustable CounterBore, 1" OD, 1/2 ID, Carbide Processors HS123-62314Adjustable Counterbore, Counterboring Flat Bottom Holes- 1 Cutting Diameter, 1/2 Center Drill Diamet…
MSRP: $73.40$68.30 -
Carbide Processors
Clamp-On Adjustable CounterBore, 1" OD, 7/16 ID, Carbide Processors HS123-62313-716Adjustable Counterbore, Counterboring Flat Bottom Holes- 1 Cutting Diameter, 7/16 Center Drill Diame…
MSRP: $73.40$48.35 -
Carbide Processors
Clamp-On Adjustable CounterBore, 1" OD, 3/8 ID, Carbide Processors HS123-62313Adjustable Counterbore, Counterboring Flat Bottom Holes- 1 Cutting Diameter, 3/8 Center Drill Diame…
MSRP: $73.40$68.30 -
Carbide Processors
Clamp-On Adjustable CounterBore, 1" OD, 5/16 ID, Carbide Processors HS123-62312Adjustable Counterbore, Counterboring Flat Bottom Holes- 1 Cutting Diameter, 5/16 Center Drill Diam…
MSRP: $73.40$53.44 -
Carbide Processors
Clamp-On Adjustable CounterBore, 7/8 OD, 7/16 ID, Carbide Processors HS123-62311Adjustable Counterbore, Counterboring Flat Bottom Holes- 7/8 Cutting Diameter, 7/16 Center Drill Dia…
MSRP: $65.22$47.47 -
Carbide Processors
Clamp-On Adjustable CounterBore, 7/8 OD, 3/8 ID, Carbide Processors HS123-62310Adjustable Counterbore, Counterboring Flat Bottom Holes- 7/8 Cutting Diameter, 3/8" Center Dri…
MSRP: $65.22$47.47 -
Carbide Processors
Clamp-On Adjustable CounterBore, 7/8 OD, 5/16 ID, Carbide Processors HS123-62309Adjustable Counterbore, Counterboring Flat Bottom Holes- 7/8 Cutting Diameter, 5/16 Center Dri…
MSRP: $64.65$47.07 -
Carbide Processors
Clamp-On Adjustable CounterBore, 3/4 OD, 5/16 ID, Carbide Processors HS123-62308Adjustable Counterbore, Counterboring Flat Bottom Holes- 3/4 Cutting Diameter, 5/16 Center Drill Dia…
MSRP: $61.15$44.52 -
Carbide Processors
Clamp-On Adjustable CounterBore, 3/4 OD, 1/4 ID, Carbide Processors HS123-62307Adjustable Counterbore, Counterboring Flat Bottom Holes- 3/4 Cutting Diameter, 1/4 Center Drill Diam…
MSRP: $61.15$44.52 -
Carbide Processors
Clamp-On Adjustable CounterBore, 1/2 OD, 1/4 ID, Carbide Processors HS123-62304Adjustable Counterbore, Counterboring Flat Bottom Holes- 1/2 Cutting Diameter, 1/4 Center Drill Diam…
MSRP: $46.46$33.83 -
Carbide Processors
Clamp-On Adjustable CounterBore, 3/8 OD, 3/16 ID, Carbide Processors HS123-62301Adjustable Counterbore, Counterboring Flat Bottom Holes- 3/8 Cutting Diameter, 3/16 Center Drill Dia…
MSRP: $41.82$30.43