SOLID CARBIDE SQUARE END MILLS
Explore MSU’s solid carbide square end mills for milling flat surfaces, slots, pockets, and square shoulders. Choose from general-purpose and material-specific series to suit your machining requirements.
Send us your required tool size, workpiece material, and quantity for a quotation or selection support.
Request a Square End Mill ReviewSquare end mills, also known as flat end mills, feature a flat cutting end for machining flat-bottomed features and square shoulders. Browse our available series to compare sizes, flute counts, coatings, and suitable workpiece materials.
GPE2 · GPE4
The GP route contains GPE2, a 2-flute flat end mill family, and GPE4, a 4-flute flat end mill family. Both cover catalog diameters from 1 to 20 mm and carry an AlCr-based catalog condition for work below 55 HRC. GPE4 is also identified with unequal helix geometry.
GPPE2 · GPPE4
The GPP route contains GPPE2 and GPPE4. These are 2-flute and 4-flute enhanced flat end mill families covering 1 to 20 mm. Both carry an AlCr-based catalog condition below 55 HRC, and GPPE4 is identified with unequal helix geometry.
HPEX4
HPEX4 is the 4-flute flat end mill family in the HPX group. Its catalog range is 3 to 20 mm, with an AlCr-based condition, 38/40-degree unequal helix and a below-55-HRC boundary.
MPS4
MPS4 is a 4-flute flat end mill family covering 6 to 12 mm. Its catalog scope is mold-base and mold-frame side milling.
MHE4
MHE4 is a 4-flute flat end mill family covering 1 to 20 mm. The catalog identifies an AlCr-based condition and a below-65-HRC boundary.
MSME4
MSME4 is a 4-flute flat end mill family covering 1 to 20 mm. The catalog identifies it for stainless-steel and titanium routes, with ZrN and unequal helix geometry.
MAE3 · MAU3 · MAE3-plus
MAE3 is a 3-flute flat end mill family covering 1 to 20 mm, with DLC and a 45-degree helix in the catalog. MAU3 is a U-shaped 3-flute family covering 6 to 20 mm. MAE3-plus is an enhanced 3-flute family covering 1 to 20 mm, with DLC and 37/39/41-degree unequal helix geometry. The exact coated or uncoated ordering configuration for MAU3 and the ordering-code rule for MAE3-plus are confirmed during quotation.
FST4T
FST4T includes 25 catalog codes. Inch size is available as a specification choice within the Square End Mills range.
Compare our square end mill series by workpiece material, size range, flute count, and coating.
Compare Square End Mill SeriesCompare square end mill series by application, flute count, diameter range, and coating. View each series for detailed specifications.
| Series | Flutes | Cutting Diameter | Applications | Coating | Geometry |
|---|---|---|---|---|---|
| GPE2 | 2 | 1–20 mm | Steel and pre-hardened steel; below 55 HRC | AlCr-based | Flat end |
| GPE4 | 4 | 1–20 mm | Steel and pre-hardened steel; below 55 HRC | AlCr-based | Flat end; unequal helix |
| GPPE2 | 2 | 1–20 mm | Steel and pre-hardened steel; below 55 HRC | AlCr-based | Flat end |
| GPPE4 | 4 | 1–20 mm | Steel and pre-hardened steel; below 55 HRC | AlCr-based | Flat end; unequal helix |
| HPEX4 | 4 | 3–20 mm | General-purpose milling; below 55 HRC | AlCr-based | Flat end; 38/40° unequal helix |
| MPS4 | 4 | 6–12 mm | Mold-base and mold-frame side milling | Confirm by specification | Flat end |
| MHE4 | 4 | 1–20 mm | Hardened steel; below 65 HRC | AlCr-based | Flat end |
| MSME4 | 4 | 1–20 mm | Stainless steel and titanium alloys | ZrN | Flat end; unequal helix |
| MAE3 | 3 | 1–20 mm | Aluminum milling | DLC | Flat end; 45° helix |
| MAU3 | 3 | 6–20 mm | Aluminum milling | DLC; coated/uncoated option to be confirmed | U-shaped 3-flute flat end |
| MAE3-plus | 3 | 1–20 mm | Aluminum milling | DLC | Flat end; 37/39/41° unequal helix |
| FST4T | Confirm from exact row | See inch specifications | Confirm workpiece and operation | Confirm by specification | Flat end |
The coating names and hardness boundaries above are catalog conditions, not a promise of performance for every workpiece or machine. Use the exact catalog row and application data together. For coating selection factors, review the End Mill Coating Guide.
Need help choosing a series? Share your workpiece material and machining requirements with our team.
Get Selection SupportTell us about your material and machining requirements. Our team can help you select a suitable series and tool size.
Steel and pre-hardened steel milling
GP, GPP and HPX families within their catalog boundaries.
The MH family within its catalog hardness boundary.
Stainless-steel milling and titanium-alloy milling
The MSM family, with the exact grade and operating conditions reviewed.
MAE3, MAU3 and MAE3-plus, with alloy and ordering configuration confirmed.
Mold-base and mold-frame milling
MPS4 for the catalog’s mold-base and mold-frame side-milling scope.
Related geometries
A square end mill provides a flat end geometry. If the part instead requires a continuous spherical cutting profile, use the Ball Nose End Mills route. If it requires a flat end with a defined tool corner radius, use Corner Radius End Mills.
Custom review
If a required geometry or dimensional combination is not confirmed in the catalog, submit it through Custom Cutting Tools for feasibility review. Review does not guarantee that every geometry, tolerance, substrate or coating combination can be manufactured.
Send the workpiece, operation, dimensions and quantity together for a catalog or custom feasibility review.
Send Square End Mill RequirementsThe Square End Mills catalog range contains 279 catalog codes across the 12 families or groups shown below. Compare the available family and model-code choices in the table.
| Series | Family | Catalog name | Exact code count | Catalog range |
|---|---|---|---|---|
| GP | GPE2 | General Processing 2-Flute Flat End Mill | 47 | 1–20 mm |
| GP | GPE4 | General Processing 4-Flute Flat End Mill | 47 | 1–20 mm |
| GPP | GPPE2 | Enhanced 2-Flute Flat End Mill | 21 | 1–20 mm |
| GPP | GPPE4 | Enhanced 4-Flute Flat End Mill | 21 | 1–20 mm |
| HPX | HPEX4 | High Performance 4-Flute Flat End Mill | 19 | 3–20 mm |
| MPS | MPS4 | Mold Frame 4-Flute Flat End Mill | 12 | 6–12 mm |
| MH | MHE4 | High Hardness 4-Flute Flat End Mill | 13 | 1–20 mm |
| MSM | MSME4 | Stainless & Titanium 4-Flute Flat End Mill | 13 | 1–20 mm |
| MA | MAE3 | Aluminum 3-Flute Flat End Mill | 27 | 1–20 mm |
| MAU | MAU3 | Aluminum U-Shaped 3-Flute Flat End Mill | 7 | 6–20 mm |
| MA-plus | MAE3-plus | Enhanced Aluminum 3-Flute Flat End Mill | 27 | 1–20 mm |
| Inch | FST4T | Carbide Inch Flat End Mill | 25 | Confirm from the exact inch catalog row |
For the exact model, confirm the catalog code, cutting diameter, cutting length, shank diameter, overall length, flute count, helix or geometry note, coating and published material or hardness condition.
The Downloads page provides the current end mill catalogs.
When an exact code, dimension or coated/uncoated ordering configuration cannot be confirmed from the catalog information, MSU checks the applicable catalog table before selection or quotation instead of inferring a value from a neighboring row.
Open the document hub for the current end mill catalogs.
View End Mill CatalogsSquare End Mills are an MSU-manufactured product line. The catalogs establish the family names, model codes, dimensions and catalog conditions in this range.
The MSU Factory has Walter HELITRONIC MICRO equipment. MSU’s Quality Control facilities include a ZOLLER G3 measurement system. Exact dimensions, inspection requirements and acceptance conditions are confirmed against the selected catalog row, order or approved drawing.
Product-specific tolerances, runout, inspection items and acceptance requirements are confirmed for the selected model, order conditions or approved drawing.
Review how dimensions, inspection requirements and acceptance criteria are confirmed for the selected tool and order.
Review Quality ControlSend the family or catalog code when known. Include the workpiece material and hardness, operation, diameter, cutting length, flute count, coating or substrate request, machine and holder, coolant, quantity, destination and target date.
MOQ is normally 5–10 pieces, with the final quantity confirmed by product and quotation. Samples are charged according to the product, and sample freight is paid by the customer.
Completion of the whole order is guaranteed within 25–30 days from order placement.
T/T with deposit and balance is supported. The percentages and payment milestones are stated in the quotation or order. Quotations remain valid for 30 days.
EXW, FOB, CIF and DDP can be discussed and are confirmed by order, destination and feasibility. Packaging is confirmed in the quotation or order.
For an issue after receipt, submit it within 30 days and include applicable photos, batch number, measurement report or video. MSU reviews each issue against the supplied evidence and order record.
Contact Maria at maria@msutools.com or +86 13973369578 by phone or WhatsApp. You can also send complete application details through the Contact page.
Use Ordering and Delivery for the shared commercial process and Downloads for the current end mill catalogs.
Review the shared ordering terms before sending the complete tool and application requirement.
Review Ordering and Delivery
Both terms describe a flat cutting end. The MSU Square End Mills range consists of non-micro carbide tools; confirm exact geometry and dimensions from the selected catalog row.
A square end mill has a flat cutting end. A ball nose end mill has a continuous spherical cutting profile. A corner radius end mill retains a flat end and adds a defined radius at the tool corner.
Do not select by flute count alone. The catalog range includes 2-flute, 3-flute and 4-flute families, but the choice must also account for the workpiece, operation, tool diameter, cutting length, machine, holder and coolant.
Use GP, GPP or HPX for the published steel and pre-hardened-steel route, MH for hardened steel, MSM for stainless steel or titanium, MA/MAU/MA-plus for aluminum, and MPS4 for the stated mold-base and mold-frame side-milling scope. Confirm the exact grade, hardness and operation before selection.
Yes. FST4T contains 25 catalog codes. Inch configurations are included within the Square End Mills range.
Yes. Square end mill drawings and technical requirements can be submitted for feasibility review. Geometry, dimensions, tolerance, substrate, coating, sample and batch conditions are confirmed by project.
Completion of the whole order is guaranteed within 25–30 days from order placement.