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End MillRouterMade in USA

MNR-204-04

2 Flute Standard Length Metric C-2 Grade Carbide End Mill

4mm Dia 2-Flute Metric End Mill 12mm LOC, 4mm Shank, 50mm OAL

2 Flute Standard Length Metric C-2 Grade Carbide End Mill — MNR-204-04
Series photo — representative of the MNR-204 family
OAL 50 mmFlute 12 mmShank Ø4 mmCutter Ø4 mmSquare
Scaled drawing — true to this tool's dimensions (mm)
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RobbJack NR Series C-2 grade carbide end mill, standard length

2, 3, and 4 flute C-2 grade carbide end mills in standard length -- an economical non-ferrous line in 64th-inch sizes from 1/16" to 1", with explicit flats and no-flats part numbers and DLC coating.

  • C-2 carbide grade, square end, 30-degree helix, standard length in three flute counts: NR-204 (2 flute), NR-303 (3 flute), NR-404 (4 flute)
  • Comes in 64th-inch sizes -- 2 and 4 flute tables run from 1/16" to 1" including half sizes; 3 flute from 1/16" to 3/4"
  • Flats and no-flats versions carry distinct part numbers: sizes on 3/8" and 1/2" shanks (plus 5/8", 3/4", 1") are listed both with flats and as -NF no-flats tools; smaller sizes come without flats
  • Coating options are uncoated or DLC (Diamond-Like Carbon), in both flats and no-flats versions
  • Metric MNR-204 (2 flute) and MNR-303 (3 flute) run 2 mm to 25 mm; metric tools do not have flats
  • Applications: slotting, side milling, and helical interpolation (2 and 3 flute), side milling and high performance work from roughing through finishing; run dry, wet, cold air, or spray mist
  • Materials: aluminum, copper, magnesium, plastics, composites, brass, and wood
  • Tolerances: cutting diameter +.001/-.000, shank diameter -.0001/-.0002, flute length +.030/-.000 (1/16" to 5/16") or +.060/-.000 (21/64" to 1"), OAL +/-.060; MNR cutting diameter +.025/-.000 mm

From the RobbJack Applications Guide.

About this series

MNR Metric C-2 Grade Carbide End Mills

Metric C-2 grade standard-length end mills

The MNR is the metric version of the NR standard-length C-2 Grade carbide end mill, offered in 2, 3 and 4 flute configurations.

  • 2, 3 and 4 flute, square end
  • 30 degree helix
  • Cutting Dia. tolerance +.025/-.000 mm
  • Shank Dia. tolerance -.002/-.005 mm

Available uncoated and in Diamond-Like Carbon (DLC) coating

Best for

  • Side milling
  • Slotting
  • Helical interpolation
  • High-performance roughing
  • Semi-finishing
  • Finishing
  • Aluminum, copper, magnesium, plastics, composites, brass and wood

Specifications

US machining terms with ISO 13399 codes.

Cutting DiameterDC
4 mm
Diameter ToleranceDC tol
0.025/0.000
Shank DiameterDMM
4 mm
Length of Cut (LOC)APMX
12 mm
Overall Length (OAL)OAL
50 mm
Number of FlutesNOF
2
Helix AngleFHA
30°
Helix HandFHH
Right-hand
Cut Direction
Right-hand cut
End Type
Square End
Center Cutting
Yes — plunges
Shank Flats
Standard
Series
MNR-204 — 2 Flute Standard Length Metric C-2 Grade Carbide End Mill

Cuts these materials

AluminumCopper & BrassMagnesiumPlasticsComposites

Applications

SlottingSide MillingHelical InterpolationHigh PerformanceRoughingSemi-FinishingFinishingDryWetCold AirSpray Mist

See it run

Tolerances

TypeMinMax
Cutting Diameter+0.0250
Length of Cut+0.5+1.5
Overall Length+1-1
Shank Diameter-0.002-0.005
Starting at$38.95

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 Diamond-Like Carbon (DLC) · $43.35 — our pick for your material. Choose another finish below.

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Proven in the field

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Finishes (2)

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Starting at

$38.95

Performance guaranteed

More in the MNR-204 series

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