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AVQNA4SEHSS-CO 4 Flute End Mill 6210 4SESold0pcsNACHI 6210 4SE is the standard uncoated 4-flute end mill. Four flutes are stiffer and suit side milling; use the 2-flute 6230 2SE for slotting. It is made from cobalt high speed steel (HSS-CO), uncoated. Sizes cover diameter 2.5~50mm, flute length 7~70mm, overall length 50~160mm, shank diameter 6~42mm, 4 flutes, 54 in total, made in Japan. Diameters start at 2.5mm - four flutes leave too little chip space below that. It suits carbon and alloy steel, copper, aluminium and other non-ferrous metals with workpiece hardness up to HRC35. Typical uses: side milling in steel, profiling, and cost-driven semi-finishing. The family also includes the 2-flute 6230 2SE (diameters from 1mm), the regular-shank 6202 4RSE and the extended 6212 SL4SE (flute length 15~125mm); for tool life move to the TiN coated 6274P 4GE. Why do diameters start at 2.5mm? Four flutes cannot clear chips below that. This one covers diameter 2.5~50mm across 54 sizes.
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$ 310 ~ $ 7,400
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Cutting ToolsEnd MillFlat End Mill
HSS-CO 4 Flute End Mill 6210 4SE
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HSS-CO 4 Flute End Mill 6210 4SE

NACHI 6210 4SE is the standard uncoated 4-flute end mill. Four flutes are stiffer and suit side milling; use the 2-flute 6230 2SE for slotting.

Specifications (54 items)

Dia. Flute length Overall length Shank dia. Flutes
2.5~9.5 7~25 50~75 6~10 4
Expand this group (15 specs)
Part No. Dia. Flute length Overall length Shank dia. Flutes
AVQNA4SE2.5 2.5 7 50 6 4
AVQNA4SE3 3 9 50 6 4
AVQNA4SE3.5 3.5 12 60 8 4
AVQNA4SE4 4 12 60 8 4
AVQNA4SE4.5 4.5 15 60 8 4
AVQNA4SE5 5 15 60 8 4
AVQNA4SE5.5 5.5 15 60 8 4
AVQNA4SE6 6 15 60 8 4
AVQNA4SE6.5 6.5 20 65 10 4
AVQNA4SE7 7 20 65 10 4
AVQNA4SE7.5 7.5 20 65 10 4
AVQNA4SE8 8 20 65 10 4
AVQNA4SE8.5 8.5 25 75 10 4
AVQNA4SE9 9 25 75 10 4
AVQNA4SE9.5 9.5 25 75 10 4
10~19 25~45 75~110 10~20 4
Expand this group (10 specs)
Part No. Dia. Flute length Overall length Shank dia. Flutes
AVQNA4SE10 10 25 75 10 4
AVQNA4SE11 11 30 80 12 4
AVQNA4SE12 12 30 80 12 4
AVQNA4SE13 13 35 90 16 4
AVQNA4SE14 14 35 90 16 4
AVQNA4SE15 15 40 95 16 4
AVQNA4SE16 16 40 95 16 4
AVQNA4SE17 17 40 105 20 4
AVQNA4SE18 18 40 105 20 4
AVQNA4SE19 19 45 110 20 4
20~29 45~55 110~125 20~25 4
Expand this group (10 specs)
Part No. Dia. Flute length Overall length Shank dia. Flutes
AVQNA4SE20 20 45 110 20 4
AVQNA4SE21 21 45 110 20 4
AVQNA4SE22 22 45 110 20 4
AVQNA4SE23 23 50 120 25 4
AVQNA4SE24 24 50 120 25 4
AVQNA4SE25 25 50 120 25 4
AVQNA4SE26 26 50 120 25 4
AVQNA4SE27 27 55 125 25 4
AVQNA4SE28 28 55 125 25 4
AVQNA4SE29 29 55 125 25 4
30~39 55~65 125~150 25~32 4
Expand this group (10 specs)
Part No. Dia. Flute length Overall length Shank dia. Flutes
AVQNA4SE30 30 55 125 25 4
AVQNA4SE31 31 60 145 32 4
AVQNA4SE32 32 60 145 32 4
AVQNA4SE33 33 60 145 32 4
AVQNA4SE34 34 60 145 32 4
AVQNA4SE35 35 60 145 32 4
AVQNA4SE36 36 60 145 32 4
AVQNA4SE37 37 65 150 32 4
AVQNA4SE38 38 65 150 32 4
AVQNA4SE39 39 65 150 32 4
40~50 65~70 150~160 32~42 4
Expand this group (9 specs)
Part No. Dia. Flute length Overall length Shank dia. Flutes
AVQNA4SE40 40 65 150 32 4
AVQNA4SE42 42 65 150 32 4
AVQNA4SE42*42 42 65 155 42 4
AVQNA4SE45 45 70 155 32 4
AVQNA4SE45*42 45 70 160 42 4
AVQNA4SE48 48 70 155 32 4
AVQNA4SE48*42 48 70 160 42 4
AVQNA4SE50 50 70 155 32 4
AVQNA4SE50*42 50 70 160 42 4

Specification Range

Diameter 2.5~50mm
Flute length 7~70mm
Overall length 50~160mm
Shank diameter 6~42mm

Product Description

NACHI 6210 4SE is the standard uncoated 4-flute end mill. Four flutes are stiffer and suit side milling; use the 2-flute 6230 2SE for slotting. It is made from cobalt high speed steel (HSS-CO), uncoated. Sizes cover diameter 2.5~50mm, flute length 7~70mm, overall length 50~160mm, shank diameter 6~42mm, 4 flutes, 54 in total, made in Japan. Diameters start at 2.5mm - four flutes leave too little chip space below that. It suits carbon and alloy steel, copper, aluminium and other non-ferrous metals with workpiece hardness up to HRC35. Typical uses: side milling in steel, profiling, and cost-driven semi-finishing. The family also includes the 2-flute 6230 2SE (diameters from 1mm), the regular-shank 6202 4RSE and the extended 6212 SL4SE (flute length 15~125mm); for tool life move to the TiN coated 6274P 4GE. Why do diameters start at 2.5mm? Four flutes cannot clear chips below that. This one covers diameter 2.5~50mm across 54 sizes.

Workpiece Materials & Hardness

  • Steel (P)
  • Non-ferrous metals (N)

Max. workpiece hardness HRC35

Related Resources

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