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End MillMade in USA

MTS-401-06

4 Flute Stub Length Metric Tuffy Grade Carbide End Mill

6mm Dia 4-Flute Metric End Mill 8mm LOC, 6mm Shank, 50mm OAL

4 Flute Stub Length Metric Tuffy Grade Carbide End Mill — MTS-401-06
Series photo — representative of the MTS-401 family
OAL 50 mmFlute 8 mmShank Ø6 mmCutter Ø6 mmSquare
Scaled drawing — true to this tool's dimensions (mm)
Speeds & FeedsDialed to this exact tool — free
Free CAD & DataSTEP 3DDXF 2DISO CSVCAM library
RobbJack TS-201 2-flute stub length Tuffy grade carbide end mill

Stub-length Tuffy grade square end mills in 2, 3, and 4 flute — short, rigid general-purpose cutters offered in five coating options.

  • Square end stub-length Tuffy grade carbide in three flute counts: TS-201 (2 flute), TS-301 (3 flute), TS-401 (4 flute), all with 30° helix
  • Stub flute lengths for rigidity — e.g. 1/4" diameter carries only a 1/2" flute length on a 2" OAL
  • Inch sizes 1/16"–3/4" (2 and 4 flute; 3 flute runs 1/16"–1/2"); metric MTS-401 4 flute covers 2–20 mm
  • Five coating options across the line: Uncoated, TiN, TiCN, AlTiN, and Diamond-Like Carbon (DLC) — ordered by suffix (-T, -C, -A, -DLC)
  • 2 and 3 flute rated for slotting, side milling, and helical interpolation; 4 flute optimized for side milling
  • Broad material range: aluminum, copper, titanium, magnesium, cast iron, steel, brass (plus wood on 2/3 flute)
  • High-performance roughing, semi-finishing, and finishing — dry, wet, cold air, or spray mist
  • Tolerances: cutting dia +.000/−.002 (1/16"–1/4") and +.000/−.003 (5/16"–3/4"); shank −.0001/−.0002; MTS cutting dia +.000/−.075 mm

From the RobbJack Applications Guide.

TS-301 3-flute stub length Tuffy grade carbide end mill
TS-401 4-flute stub length Tuffy grade carbide end mill

About this series

MTS Metric Stub Length Tuffy Grade Carbide End Mills

Metric 4 flute stub-length square-end mills

MTS-401 is the metric, 4 flute, stub-length, square-end Tuffy Grade carbide end mill version of the TS series, with a 30 degree helix. Offered in 2 mm through 20 mm cutting diameters, uncoated or with TiN, TiCN, AlTiN and DLC coatings.

  • Metric sizes 2 mm to 20 mm
  • 4 flute square end, 30 degree helix
  • Uncoated or TiN, TiCN, AlTiN, and DLC coated

Aluminum, copper, titanium, magnesium, cast iron, steel, brass

Headline spec

Metric, stub length, 4 flute, 30 degree helix

Best for

  • Side milling
  • High performance roughing through finishing

Specifications

US machining terms with ISO 13399 codes.

Cutting DiameterDC
6 mm
Diameter ToleranceDC tol
0.000/-0.075
Shank DiameterDMM
6 mm
Length of Cut (LOC)APMX
8 mm
Overall Length (OAL)OAL
50 mm
Number of FlutesNOF
4
Helix AngleFHA
30°
Helix HandFHH
Right-hand
Cut Direction
Right-hand cut
End Type
Square End
Center Cutting
Yes — plunges
Series
MTS-401 — 4 Flute Stub Length Metric Tuffy Grade Carbide End Mill

Cuts these materials

AluminumCopper & BrassTitaniumMagnesiumCast IronSteel

Applications

Side MillingHigh PerformanceRoughingSemi-FinishingFinishingDryWetCold AirSpray Mist

See it run

Tolerances

TypeMinMax
Cutting Diameter0-0.075
Length of Cut+0.5+1.5
Overall Length+1-1
Shank Diameter-0.002-0.005
Starting at$47.85

Made & shipped in the USA · lead time confirmed at order. Buy at retail or through your distributor.

Performance guaranteed. Run it against the tool you use today — if it doesn't beat it, we'll make it right.

Adds Aluminum Titanium Nitride (AlTiN) · $51.35 — our pick for your material. Choose another finish below.

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Download ISO 13399 data (.csv)

Proven in the field

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Finishes (5)

Compare tool coatings →

Starting at

$47.85

Performance guaranteed

More in the MTS-401 series

Same series, different size — what changes from this tool is shown in red.