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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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Adjustable CounterBore, HSS 5/8" Dia, 9/32" Center Drill, 1/2" Shank, Carbide Processors HS122-62275$75.50$62.91 -
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