Garr Tool 28050 1/4″ N/C BALL EM 4FL 3/4″ F/L 390M End Mill
$31.23
- 1/4″ N/C BALL EM 4FL 3/4″ F/L
- General Purpose – N/C Tolerance
- Standard Length – Ball End – 4 Flutes
- Solid submicron grain carbide end mill – center cutting
Garr Tool 390M Series End Mill — 1/4″ N/C BALL EM 4FL 3/4″ F/L
- General Purpose – N/C Tolerance
- Standard Length – Ball End – 4 Flutes
- Solid submicron grain carbide end mill – center cutting
- Excellent for keyways
- Tight tolerances for precision machining
- For use when matching tools are necessary
Tolerances
- flute dia. +.001″-.000 (+0.025-0.000mm)
- shank dia. h6
- Ball radius +.0005-.0000″ (+0.0127-0.000mm)
Made by Garr Tool, Alma, Michigan (ISO 9001:2015). WARNING: This product can expose you to chemicals including cobalt, which is known to the State of California to cause cancer. www.P65Warnings.ca.gov
| EDP # | 28050 |
|---|---|
| Series | 390M |
| Description | 1/4" N/C BALL EM 4FL 3/4" F/L |
| Flutes | 4 |
| Flute Diameter | 0.2500" |
| Flute Length | 0.7500" |
| Shank Diameter | 0.2500" |
| Overall Length | 2.5000" |
| End Type | BALL |
| Weight (lbs) | 0.0600 |
| Made in | USA (Alma, Michigan) |
Applications
30° helix
Plunge, ramp & side cutting
Slotting (ball end)
Side milling (ball end)
Tolerances
- flute dia. +.001"-.000 (+0.025-0.000mm)
- shank dia. h6
- Ball radius +.0005-.0000" (+0.0127-0.000mm)
| EDP # | Flute Diameter | Flute Length | Overall Length | Shank Diameter | Price |
|---|---|---|---|---|---|
| 28010 | 0.0625" | 0.2500" | 1.5000" | 0.1250" | $22.20 Add to cart |
| 28020 | 0.0938" | 0.3125" | 1.5000" | 0.1250" | $21.05 Add to cart |
| 28030 | 0.1250" | 0.5000" | 1.5000" | 0.1250" | $20.40 Add to cart |
| 28040 | 0.1875" | 0.5625" | 2.0000" | 0.1875" | $27.12 Add to cart |
| 28050 | 0.2500" | 0.7500" | 2.5000" | 0.2500" | $31.23 Add to cart |
| 28060 | 0.3125" | 0.8750" | 2.5000" | 0.3125" | $44.63 Add to cart |
| 28070 | 0.3750" | 0.8750" | 2.5000" | 0.3750" | $57.34 Add to cart |
| 28080 | 0.4375" | 1.0000" | 2.7500" | 0.4375" | $69.90 Add to cart |
| 28090 | 0.5000" | 1.0000" | 3.0000" | 0.5000" | $91.83 Add to cart |
| 28100 | 0.6250" | 1.2500" | 3.5000" | 0.6250" | $163.47 Add to cart |
Brand
Garr Tool
Garr Tool produces 14,000 end mills, drills, reamers, and other cutting tool styles per day. They are committed to maintaining a large inventory, and can customize and coat tools to meet your needs.
Need This Tool Customized?
Every machining application is different. If this tool is close to what you need but not an exact fit, General Cutting Tools can help modify it for your specific job, machine, material, or production requirement.
We work with CNC shops, industrial manufacturers, tool rooms, and production facilities to provide tool modifications that improve fit, function, performance, and efficiency. Whether you need a small adjustment or a more specialized cutting tool solution, our team can review your requirements and recommend the best option.
Custom tool modifications can help reduce setup time, improve accuracy, extend tool life, solve clearance issues, and support more consistent production results.
Common Tool Customization Options
Diameter and OD Modifications
We can modify tool diameters to better match your application requirements, including cutting diameter changes, OD modifications, pilot diameter adjustments, step diameters, and shank diameter modifications.
Bore Modifications for Saw Blades
Custom saw blade bore modifications are available for hole diameter changes, pinholes, mounting holes, and keyway cutouts to help match your machine setup and cutting requirements.
Length Adjustments
Tools can be modified for specific reach, clearance, or setup needs. This may include overall length changes, flute length adjustments, reduced neck sections, extended reach designs, or shortened tools for improved rigidity.
Shank Modifications
Shank modifications can help ensure the tool fits properly in your holder, spindle, or machine setup. Common options include shank diameter changes, flats, Weldon flats, reduced shanks, and custom holding requirements.
Radius, Chamfer, and Corner Changes
We can customize corner radius, chamfer angles, edge breaks, and other profile details to meet part print requirements or improve cutting performance.
Step Tool Modifications
For applications that require multiple diameters or operations in a single tool, we can create or modify step tools to help reduce tool changes and improve production efficiency.
Flute and Cutting Edge Adjustments
Depending on the tool and application, flute length, cutting edge geometry, end cutting features, relief angles, and cutting edge shape may be modified to improve chip evacuation, cutting action, and tool performance.
Regrinding and Resharpening
Many cutting tools can be reground or resharpened to restore performance, extend tool life, and reduce replacement costs.
Custom Profiles and Special Forms
For unique part features, we can help provide special forms, custom profiles, custom radii, counterbores, countersinks, keyseat cutters, form tools, and other application-specific tooling solutions.
Material-Specific Tool Adjustments
We can help modify or recommend tooling based on the material being machined, including aluminum, brass, bronze, plastics, stainless steel, hardened steel, cast iron, composites, and other industrial materials.
Have a Drawing, Sample, or Part Print?
Send us your print, sketch, CAD file, photo, tool number, sample, or application details. For the fastest quote, include the material being cut, quantity needed, required dimensions, tolerances, and any machine or holder requirements.
Coating Options
Tool coatings can be selected or added to improve wear resistance, heat resistance, lubricity, and performance in specific materials such as steel, stainless steel, aluminum, cast iron, and high-temperature alloys.
Request a Custom Tool Modification
Need this tool changed for your application? Contact General Cutting Tools today to discuss your custom tooling needs. We can help you find the right solution for your machine, material, and production goals.
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