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End MillMade in USA

T6-400-02.5

4 Flute Stub Length Tuffy Grade Carbide End Mill

0.078125-in Dia 4-Flute End Mill, 0.15625-in LOC, 0.1875-in Shank, 2.5-in OAL

4 Flute Stub Length Tuffy Grade Carbide End Mill — T6-400-02.5
Series photo — representative of the T6-400 family
OAL 2.5″Flute 0.1562″Shank Ø0.1875″Cutter Ø0.0781″Square
Scaled drawing — true to this tool's dimensions (inch)
Speeds & FeedsDialed to this exact tool — free
Free CAD & DataSTEP 3DDXF 2DISO CSVCAM library
RobbJack T6 Series double-ended Tuffy grade carbide end mill on a 3/16 inch shank

2 and 4 flute double-ended Tuffy grade carbide end mills -- every size on a 3/16" shank for strength, with tight plus/minus diameter tolerance and cutting diameters from 1/16" to 3/16" in 64th increments.

  • Double-ended carbide end mills on 3/16" shanks -- two cutting ends per tool, with all sizes on 3/16" shanks for strength
  • Four sub-series: T6-200 (2 flute stub), T6-202 (2 flute standard), T6-400 (4 flute stub), T6-402 (4 flute standard), all Tuffy grade with square end and 30-degree helix
  • Cutting diameters from 1/16" to 3/16" in 64th-inch increments (02 through 06, including half sizes)
  • Tight plus/minus tolerances: cutting diameter +/-.0005, shank diameter -.0001/-.0002, flute length +.030/-.000, OAL +/-.060
  • The 3/16" cutting diameter size is single end only, to allow the plus/minus tolerance
  • Available uncoated or in TiN, TiCN, AlTiN, and DLC coatings
  • 2 flute versions cover slotting, side milling, helical interpolation, ramping, roughing, semi-finishing, and finishing; 4 flute versions are for side milling, semi-finishing, and finishing
  • Materials: aluminum, copper, titanium, magnesium, cast iron, steel, stainless steel, brass, and wood; run dry, wet, cold air, or spray mist

From the RobbJack Applications Guide.

About this series

T6 Tuffy Grade Carbide End Mills

Double-ended carbide end mills on strong 3/16" shanks

The T6 is a double-ended, square-end Tuffy Grade carbide end mill available in 2-flute (T6-200 stub, T6-202 standard) and 4-flute (T6-400 stub, T6-402 standard) configurations. All sizes are built on 3/16" shanks for strength. Cutting diameters run from 1/16" to 3/16"; the 3/16" size is single-ended only to allow plus/minus tolerance.

  • 2 and 4 flute, square end
  • 30 degree helix
  • Double ended
  • All sizes on 3/16" shanks for strength
  • Tight tolerances
  • Cutting Dia. tolerance +/-.0005"

Available uncoated and in TiN, TiCN, AlTiN, and Diamond-Like Carbon (DLC) coatings

Headline spec

Cutting diameters 1/16"-3/16"; 3/16" shank; 2-1/2" OAL (2" on single-ended 3/16")

Best for

  • Slotting
  • Side milling
  • Helical interpolation
  • Ramping
  • Roughing
  • Semi-finishing
  • Finishing
  • Aluminum, copper, titanium, magnesium, cast iron, steel, stainless steel, brass and wood

Specifications

US machining terms with ISO 13399 codes.

Cutting DiameterDC
0.0781″
Diameter ToleranceDC tol
0.0005/-0.0005
Max Cutting DiameterDCX
0.0786″
Shank DiameterDMM
0.1875″
Length of Cut (LOC)APMX
0.1562″
Overall Length (OAL)OAL
2.5″
Number of FlutesNOF
4
Helix AngleFHA
30°
Helix HandFHH
Right-hand
Cut Direction
Right-hand cut
Shank Blend Angle
15°
End Type
Square End
Center Cutting
Yes — plunges
Series
T6-400 — 4 Flute Stub Length Tuffy Grade Carbide End Mill

Cuts these materials

AluminumCopper & BrassTitaniumMagnesiumCast IronSteelStainless Steel

Applications

Side MillingSemi-FinishingFinishingDryWetCold AirSpray Mist

See it run

Tolerances

TypeMinMax
Cutting Diameter+0.0005-0.0005
Length of Cut+0.030
Overall Length+0.06-0.06
Shank Diameter-0.0001-0.0002
Starting at$84.75

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) · $87.05 — our pick for your material. Choose another finish below.

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Proven in the field

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Finishes (5)

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Starting at

$84.75

Performance guaranteed

More in the T6-400 series

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