HS-MAX Carbide End Mills for Stainless Steel
Solid carbide end mills for stainless steel machining: 2-flute ball nose R0.5–R6.0 mm, 4-flute radius D1.0–D12.0 mm, 4-flute flat D1.0–D20.0 mm.
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Product information
The HS-MAX stainless steel machining series (catalog L21–L25) covers HSB230 2-flute ball nose (R0.5–R6.0), HSR435 4-flute radius (D1.0–D12.0) and HSE435/HSEL435 4-flute flat and long-shank flat (D1.0–D20.0 / D3.0–D12.0).
Specifications
| Cutter types | HSB230 2-flute ball nose; HSR435 4-flute radius; HSE435 4-flute flat; HSEL435 4-flute long-shank flat |
|---|---|
| Diameter range | R0.5–R6.0 mm ball nose; D1.0–D12.0 mm radius; D1.0–D20.0 mm flat; D3.0–D12.0 mm long-shank |
| Intended materials | Stainless steel |
| Example stock models | HSB230-060120-050-S06; HSR435-060160R0.5-050-S06; HSE435-040110-050-S04 |
Available sizes
Model codes and dimensions reproduced from the Koves 2025 Solid Round Cutting Tools catalog. Stock items are listed in the catalog, not confirmed live — ask us for current availability.
HS-MAX Ball End Mill, 2-Flute, 30° helix
Catalog page 14 · 18 sizes · code HSB230
| Model | Dia. (mm) | Ball radius (mm) | Flute length (mm) | Overall length (mm) | Shank dia. (mm) |
|---|---|---|---|---|---|
| HSB230-010020-050-S04 | 1 | 0.5 | 2 | 50 | 4 |
| HSB230-015030-050-S04 | 1.5 | 0.75 | 3 | 50 | 4 |
| HSB230-020040-050-S04 | 2 | 1 | 4 | 50 | 4 |
| HSB230-030060-050-S04 | 3 | 1.5 | 6 | 50 | 4 |
| HSB230-030060-050-S04 | 3 | 1.5 | 6 | 50 | 4 |
| HSB230-040080-050-S04 | 4 | 2 | 8 | 50 | 4 |
| HSB230-040080-050-S06 | 4 | 2 | 8 | 50 | 6 |
| HSB230-050100-050-S06 | 5 | 2.5 | 10 | 50 | 6 |
| HSB230-060120-050-S06 | 6 | 3 | 12 | 50 | 6 |
| HSB230-060120-075-S06 | 6 | 3 | 12 | 75 | 6 |
| HSB230-060120-100-S06 | 6 | 3 | 12 | 100 | 6 |
| HSB230-080160-060-S08 | 8 | 4 | 16 | 60 | 8 |
| HSB230-080160-075-S08 | 8 | 4 | 16 | 75 | 8 |
| HSB230-080160-100-S08 | 8 | 4 | 16 | 100 | 8 |
| HSB230-100200-075-S10 | 10 | 5 | 20 | 75 | 10 |
| HSB230-100200-100-S10 | 10 | 5 | 20 | 100 | 10 |
| HSB230-120240-075-S12 | 12 | 6 | 24 | 75 | 12 |
| HSB230-120240-100-S12 | 12 | 6 | 24 | 100 | 12 |
HS-MAX Radius End Mill, 4-Flute, 35° helix
Catalog page 15 · 27 sizes · code HSR435
| Model | Dia. (mm) | Corner radius (mm) | Flute length (mm) | Overall length (mm) | Shank dia. (mm) |
|---|---|---|---|---|---|
| HSR435-010030R0.2-050-S04 | 1 | 0.2 | 3 | 50 | 4 |
| HSR435-020060R0.2-050-S04 | 2 | 0.2 | 6 | 50 | 4 |
| HSR435-030080R0.2-050-S04 | 3 | 0.2 | 8 | 50 | 4 |
| HSR435-030080R0.5-050-S04 | 3 | 0.5 | 8 | 50 | 4 |
| HSR435-040110R0.2-050-S04 | 4 | 0.2 | 11 | 50 | 4 |
| HSR435-040110R0.5-050-S04 | 4 | 0.5 | 11 | 50 | 4 |
| HSR435-060160R0.2-050-S06 | 6 | 0.2 | 16 | 50 | 6 |
| HSR435-060160R0.5-050-S06 | 6 | 0.5 | 16 | 50 | 6 |
| HSR435-060160R1.0-050-S06 | 6 | 1 | 16 | 50 | 6 |
| HSR435-060160R0.5-075-S06 | 6 | 0.5 | 16 | 75 | 6 |
| HSR435-060160R1.0-075-S06 | 6 | 1 | 16 | 75 | 6 |
| HSR435-060160R0.5-100-S06 | 6 | 0.5 | 16 | 100 | 6 |
| HSR435-060160R1.0-100-S06 | 6 | 1 | 16 | 100 | 6 |
| HSR435-080200R0.5-060-S08 | 8 | 0.5 | 20 | 60 | 8 |
| HSR435-080200R1.0-060-S08 | 8 | 1 | 20 | 60 | 8 |
| HSR435-080200R0.5-075-S08 | 8 | 0.5 | 20 | 75 | 8 |
| HSR435-080200R1.0-075-S08 | 8 | 1 | 20 | 75 | 8 |
| HSR435-080200R0.5-100-S08 | 8 | 0.5 | 20 | 100 | 8 |
| HSR435-080200R1.0-100-S08 | 8 | 1 | 20 | 100 | 8 |
| HSR435-100250R0.5-075-S10 | 10 | 0.5 | 25 | 75 | 10 |
| HSR435-100250R1.0-075-S10 | 10 | 1 | 25 | 75 | 10 |
| HSR435-100250R0.5-100-S10 | 10 | 0.5 | 25 | 100 | 10 |
| HSR435-100250R1.0-100-S10 | 10 | 1 | 25 | 100 | 10 |
| HSR435-120300R0.5-075-S12 | 12 | 0.5 | 30 | 75 | 12 |
| HSR435-120300R1.0-075-S12 | 12 | 1 | 30 | 75 | 12 |
| HSR435-120300R0.5-100-S12 | 12 | 0.5 | 30 | 100 | 12 |
| HSR435-120300R1.0-100-S12 | 12 | 1 | 30 | 100 | 12 |
HS-MAX Flat End Mill, 4-Flute, 35° helix
Catalog page 15 · 16 sizes · code HSE435
| Model | Dia. (mm) | Flute length (mm) | Overall length (mm) |
|---|---|---|---|
| HSE435-010030-050-S04 | 1.0 | 3 | 50 |
| HSE435-015040-050-S04 | 1.5 | 4 | 50 |
| HSE435-020060-050-S04 | 2 | 6 | 50 |
| HSE435-025070-050-S04 | 2.5 | 7 | 50 |
| HSE435-030090-050-S04 | 3 | 9 | 50 |
| HSE435-030090-050-S03 | 3 | 9 | 50 |
| HSE435-040110-050-S04 | 4 | 11 | 50 |
| HSE435-050130-050-S06 | 5 | 13 | 50 |
| HSE435-060160-050-S06 | 6 | 16 | 50 |
| HSE435-080200-060-S08 | 8 | 20 | 60 |
| HSE435-100250-075-S10 | 10 | 25 | 75 |
| HSE435-120300-075-S12 | 12 | 30 | 75 |
| HSE435-140350-100-S14 | 14 | 35 | 100 |
| HSE435-160400-100-S16 | 16 | 40 | 100 |
| HSE435-180450-100-S18 | 18 | 45 | 100 |
| HSE435-200500-100-S20 | 20 | 50 | 100 |
Catalog page 16 · 12 sizes · code HSEL435
| Model | Dia. (mm) | Flute length (mm) | Overall length (mm) | Shank dia. (mm) |
|---|---|---|---|---|
| HSEL435-030090-075-S04 | 3 | 9 | 75 | 4 |
| HSEL435-040120-075-S04 | 4 | 12 | 75 | 4 |
| HSEL435-030120-100-S04 | 3 | 12 | 100 | 4 |
| HSEL435-040120-100-S04 | 4 | 12 | 100 | 4 |
| HSEL435-050150-075-S06 | 5 | 15 | 75 | 6 |
| HSEL435-060180-075-S06 | 6 | 18 | 75 | 6 |
| HSEL435-050200-100-S06 | 5 | 20 | 100 | 6 |
| HSEL435-060240-100-S06 | 6 | 24 | 100 | 6 |
| HSEL435-080240-075-S08 | 8 | 24 | 75 | 8 |
| HSEL435-080320-100-S08 | 8 | 32 | 100 | 8 |
| HSEL435-100400-100-S10 | 10 | 40 | 100 | 10 |
| HSEL435-120480-100-S12 | 12 | 48 | 100 | 12 |
How to read the model number
The catalog page “Detailed explanation of the model” reads a code left to right as series, cutter type, length mark, flutes, helix angle, cutting diameter, corner radius, cutting length, overall length and shank diameter. The original diagram is reproduced here:
Source: source-excerpts/catalog-2025-pages-3-4-milling-contents-model-code.txt — Original PDF page 4