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Download PDF Using Carbide Inserted-Tip Tool Instructions
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Important Update Regarding Sherline Products
October 20, 2026
We would like to share an encouraging development regarding the future of Sherline Products.
We are currently in discussions with an American manufacturer regarding the potential purchase of Sherline’s intellectual property and remaining inventory. The goal of this proposed acquisition is to preserve and revitalize the Sherline brand while providing continued availability of replacement parts, accessories, and machines for our valued customers.
As these discussions progress, we have agreed to temporarily suspend accepting new orders, effective October 19, 2026. This will allow us to preserve our remaining inventory while negotiations are underway.
Although no final agreement has been reached, we are hopeful that this opportunity will provide a positive path forward for the Sherline name and the customers who have trusted our products for more than five decades.
We sincerely appreciate your patience, understanding, and continued loyalty during this transition. We will share additional information as soon as it becomes available.
Our greatest hope is that the Sherline legacy of quality, precision, and American craftsmanship will continue for generations to come.
Karl Rohlin III and Charla Papp
Co-Owners, Sherline Products, Inc.
October 20, 2026
We would like to share an encouraging development regarding the future of Sherline Products.
We are currently in discussions with an American manufacturer regarding the potential purchase of Sherline’s intellectual property and remaining inventory. The goal of this proposed acquisition is to preserve and revitalize the Sherline brand while providing continued availability of replacement parts, accessories, and machines for our valued customers.
As these discussions progress, we have agreed to temporarily suspend accepting new orders, effective October 19, 2026. This will allow us to preserve our remaining inventory while negotiations are underway.
Although no final agreement has been reached, we are hopeful that this opportunity will provide a positive path forward for the Sherline name and the customers who have trusted our products for more than five decades.
We sincerely appreciate your patience, understanding, and continued loyalty during this transition. We will share additional information as soon as it becomes available.
Our greatest hope is that the Sherline legacy of quality, precision, and American craftsmanship will continue for generations to come.
Karl Rohlin III and Charla Papp
Co-Owners, Sherline Products, Inc.
Image shown is a representation only. Actual product may vary.
Carbide Inserts (thread, groove)
These Carbide inserts are used in the Insert Tool Holder and are used for either threading or grooving.
Thread Cutting
- 60° threading insert for cutting outside threads (P/N 22675)
Groove Cutting Inserts (available in multiple widths and profiles)
Standard Grooves
- .031″ insert (P/N 2269)
- .062″ insert (P/N 2270)
- .094″ insert (P/N 22694)
- .125″ insert (P/N 22695)
Radial Grooves
- .031″ radius insert (P/N 22692)
- .062″ radius insert (P/N 22693)
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| P/N 22675 – 60° THREADING INSERT | |
| INSERT SIZE | 2 |
| CORNER RADIUS CENTER (RC) | .0040(in), 0.1000 (mm) |
| PROFILE DISTANCE (E) | .075 (in), 1.90 (mm) |
| EXTERNAL THREAD PITCH | 1.25-3.5 (in), 0.70-3.0 (mm) |
| EXTERNAL TPI | 8-36 |
| INTERNAL TPI | 7-20 |
| GRADE | SKC5025 |
| P/N 2269 – .031 GROOVING INSERT | |
| INSERT SIZE | 2 |
| CUTTING WIDTH (W) | .031 (in), 0.79 (mm) |
| CUTTING WIDTH TOL ± | .001 (in), 0.03 (mm) |
| CORNER RADIUS (RR) | .0035 (in), 0.09 (mm) |
| CUTTING DEPTH (T) | .050 (in), 1.27 (mm) |
| GRADE | SKC5025 |
| P/N 22692 – .031 RADIUS GROOVING INSERT | |
| INSERT SIZE | 2 |
| CUTTING WIDTH (W) | .062 (in), 1.575 (mm) |
| CUTTING WIDTH TOL ± | .001 (in), 0.03 (mm) |
| CORNER RADIUS CENTER (RR) | .031 (in), 0.775 (mm) |
| CUTTING DEPTH (T) | .011 (in), 2.794 (mm) |
| GRADE | SKC5025 |
| P/N 2270 – .062 GROOVING INSERT | |
| INSERT SIZE | 2 |
| CUTTING WIDTH (W) | .062 (in), 1.58 (mm) |
| CUTTING WIDTH TOL ± | .001 (in), 0.03 (mm) |
| CORNER RADIUS (RR) | .0075 (in), 0.19 (mm) |
| CUTTING DEPTH (T) | .110 (in), 2.79 (mm) |
| GRADE | SKC5025 |
| P/N 22693 – .062 RADIUS GROOVING INSERT | |
| INSERT SIZE | 2 |
| CUTTING WIDTH (W) | .125 (in), 3.175 (mm) |
| CUTTING WIDTH TOL ± | .001 (in), 0.03 (mm) |
| CORNER RADIUS (RR) | .062 (in), 1.6 (mm) |
| CUTTING DEPTH (T) | .11 (in), 2.794 (mm) |
| GRADE | SKC5025 |
| P/N 22694 – .094 GROOVING INSERT | |
| INSERT SIZE | 2 |
| CUTTING WIDTH (W) | .094 (in), 2.39 (mm) |
| CUTTING WIDTH TOL ± | .001 (in), 0.03 (mm) |
| CORNER RADIUS (RR) | .01 (in), 0.005 (mm) |
| CUTTING DEPTH (T) | .10 (in), .15 (mm) |
| GRADE | SKC5025 |
| P/N 22695 – .125 GROOVING INSERT | |
| INSERT SIZE | 2 |
| CUTTING WIDTH (W) | .125 (in), 3.18 (mm) |
| CUTTING WIDTH TOL ± | .001 (in), 0.03 (mm) |
| CORNER RADIUS (RR) | .0075 (in), 0.19 (mm) |
| CUTTING DEPTH (T) | .110 (in), 2.79 (mm) |
| GRADE | SKC5025 |
Related products
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Use a bench grinder or file to slightly grind down the back side of the clamp (see blue circle in the image).
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This will allow the clamp tip to clear the step (indicated by the red arrow), ensuring full contact and proper clamping of the insert.
Threading/Grooving Carbide Insert Tool Holder
Due to the variety of insert types and their cost, the holder is sold separately without inserts, allowing you to select only the specific inserts you need. The holder includes a clamp, 6-32 hold-down screw, and a 7/64" hex key for secure setup.
⚠️ CUSTOMER NOTICE — July 8, 2020
We’ve identified a potential issue affecting a small number of our Threading/Grooving Carbide Insert Tool Holders. Specifically, the cutting insert may not be securely clamped in place.
When tightening the clamp, the inside corner of the clamp may contact the step adjacent to the insert pocket, preventing full engagement with the clamping notch on the insert. This was caused by an early in-house clamp design that mistakenly used symmetrical angles on both sides of the clamp nose, rather than the intended asymmetrical design. This issue has since been corrected.
[caption id="attachment_33596" align="alignright" width="300"]
Click on the image for a larger view.[/caption]
To resolve the issue immediately:
⚠️ CAUTION: Chips coming off the carbide inserts can be very HOT! Use extreme caution. Carbide inserts can also shatter. For these reasons, proper protective eyewear and clothing are especially important when using these tools. Materials like tool steel can form long, stringy chips that wrap around the part. Use a chip brush frequently, or pause machining to clear debris. Accumulated chips, especially when hot, can ignite. Keep the area around the cutter clean and free of chip buildup.