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AVFNA2AGREHSS-CO AG Ball Nose End Mill 6420 2AGRESold0pcsNACHI 6420 2AGRE is the 2-flute ball nose end mill in the AG coated line. A ball nose is for curved surfaces and 3D toolpaths; use 6490 2AGE for flat-bottomed slots and the 6422 bull nose for corner radii. It is made from cobalt high speed steel (HSS-CO) with an AG (TiAlN-type) coating that resists heat and oxidation and allows dry or MQL cutting. Sizes cover diameter 1~25mm, corner radius 0.5~12.5mm, flute length 2~50mm, overall length 55~180mm, shank diameter 6~25mm, 2 flutes, 19 in total, made in Japan. The uncoated equivalent is 6290 RE, which covers a slightly wider diameter range. It suits carbon and alloy steel, stainless steel with workpiece hardness up to HRC35. Typical uses: mould surface finishing, 3D contouring, radiused slots and chamfers. The family also includes the uncoated 6290 RE (diameter 1.5~40mm, corner radius 0.75~20mm); use 6490 2AGE for flat-bottomed slots and the bull-nose 6422 AGRERS-R (corner radius 0.5~4mm) to leave a corner radius. Is the ball radius half the diameter? Yes - diameter 1~25mm corresponds to a corner radius of 0.5~12.5mm, across 19 sizes.
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Cutting ToolsEnd MillBall Nose End Mill
HSS-CO AG Ball Nose End Mill 6420 2AGRE
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HSS-CO AG Ball Nose End Mill 6420 2AGRE

NACHI 6420 2AGRE is the 2-flute ball nose end mill in the AG coated line. A ball nose is for curved surfaces and 3D toolpaths; use 6490 2AGE for flat-bottomed slots and the 6422 bull nose for corner radii.

Specifications (19 items)

Part No. Dia. Corner radius Flute length Overall length Shank dia. Flutes
AVFNA2AGRE0.5 1 0.5 2 55 6 2
AVFNA2AGRE1 2 1 4 60 6 2
AVFNA2AGRE1.5 3 1.5 6 70 6 2
AVFNA2AGRE2 4 2 8 80 6 2
AVFNA2AGRE2.5 5 2.5 10 80 6 2
AVFNA2AGRE3 6 3 12 90 6 2
AVFNA2AGRE3.5 7 3.5 14 100 6 2
AVFNA2AGRE4 8 4 16 100 8 2
AVFNA2AGRE4.5 9 4.5 18 110 8 2
AVFNA2AGRE5 10 5 20 110 10 2
AVFNA2AGRE5.5 11 5.5 22 120 10 2
AVFNA2AGRE6 12 6 24 120 12 2
AVFNA2AGRE6.5 13 6.5 26 140 12 2
AVFNA2AGRE7 14 7 28 140 12 2
AVFNA2AGRE7.5 15 7.5 30 150 16 2
AVFNA2AGRE8 16 8 32 150 16 2
AVFNA2AGRE9 18 9 36 150 16 2
AVFNA2AGRE10 20 10 40 160 20 2
AVFNA2AGRE12.5 25 12.5 50 180 25 2

Specification Range

Diameter 1~25mm
Corner radius 0.5~12.5mm
Flute length 2~50mm
Overall length 55~180mm
Shank diameter 6~25mm

Product Description

NACHI 6420 2AGRE is the 2-flute ball nose end mill in the AG coated line. A ball nose is for curved surfaces and 3D toolpaths; use 6490 2AGE for flat-bottomed slots and the 6422 bull nose for corner radii. It is made from cobalt high speed steel (HSS-CO) with an AG (TiAlN-type) coating that resists heat and oxidation and allows dry or MQL cutting. Sizes cover diameter 1~25mm, corner radius 0.5~12.5mm, flute length 2~50mm, overall length 55~180mm, shank diameter 6~25mm, 2 flutes, 19 in total, made in Japan. The uncoated equivalent is 6290 RE, which covers a slightly wider diameter range. It suits carbon and alloy steel, stainless steel with workpiece hardness up to HRC35. Typical uses: mould surface finishing, 3D contouring, radiused slots and chamfers. The family also includes the uncoated 6290 RE (diameter 1.5~40mm, corner radius 0.75~20mm); use 6490 2AGE for flat-bottomed slots and the bull-nose 6422 AGRERS-R (corner radius 0.5~4mm) to leave a corner radius. Is the ball radius half the diameter? Yes - diameter 1~25mm corresponds to a corner radius of 0.5~12.5mm, across 19 sizes.

Workpiece Materials & Hardness

  • Steel (P)
  • Stainless steel (M)

Max. workpiece hardness HRC35

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