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Product Overview

Choosing the Correct Milling Insert

 

  • There are several variables that go into choosing the correct insert for your milling operations: the specific cutter body being used (milling cutter series), the type of machining operation (toolpath type), the cutting-edge angle (lead angle), the depth of cut, the materials being cut, and more. Use the filters on the left-hand side below to narrow down your choices, and find the inserts you need.
  • Milling Cutter Series: Filter by the Haas Milling Cutter Series to find all the inserts available for that specific cutter. If you don’t know the cutter series (or have a non-Haas cutter body), you can also filter by insert style (shape), or ANSI designation.
  • Material Type: Filter by primary workpiece material to find the inserts that are best suited for that specific material. You can also then filter by secondary workpiece material to find inserts that will cut multiple materials.
  • Depth of Cut: The maximum depth of cut (DOC) for a specific insert. The maximum DOC is affected by many variables, and may not be achievable under all conditions. 
  • Toolpath Type: Face milling, shoulder milling, slotting, ramping, helical milling copy milling, plunge milling, etc.
  • Lead Angle: 90°, 45°, 15°, 11° – determined by the cutter body.

TOOLPATH TYPE

Shell Mill Bodies

ISO MATERIAL TYPE

 P - STEEL   M - STAINLESS STEEL   K - CAST IRON   N - ALUMINUM / NON-FERROUS   S - HIGH-TEMP ALLOYS  H- HARDENED METALS 

 

HOP – Haas Octagon Positive

 

Toolpath Type: Face Milling

 

45° cutting edge | D.O.C. max. 0.138" (3.5mm)

  • Positive axial rake, positive radial rake
  • 45-degree cutting edge
  • Inserts have 8 cutting edges
  • Screw clamping

 

AVAILABLE HAAS GRADES

  • HP30
  • HMP20
  • HMP35
  • HN25
  • HK25

 

APPLICABLE WORKPIECE MATERIALS

    P       M        K       N      

HSNP – Haas Square Negative Positive

 

Toolpath Type: Face Milling

 

45° cutting edge | D.O.C. max. 0.275" (7.0mm)

  • Negative axial rake, positive radial rake
  • Double-sided, extra-thick insert with 8 cutting edges
  • Large rake angle reduces cutting forces
  • Wiper insert geometry for good surface quality

 

AVAILABLE HAAS GRADES

  • HP30
  • HMP20
  • HMP35
  • HK25

 

APPLICABLE WORKPIECE MATERIALS

    P         M        K      

HRNP – Haas Rectangle Negative Positive

 

Toolpath Type: Face Milling, Shoulder Milling

 

90° cutting edge | D.O.C. max. 0.571" (14.5mm)

  • Negative axial rake, positive radial rake
  • 90-degree shoulder mill with rectangle insert
  • Double-sided, thick inserts for high stability and deeper cuts

 

AVAILABLE HAAS GRADES

  • HP30
  • HMP20
  • HMP35
  • HN25
  • HK25

 

APPLICABLE WORKPIECE MATERIALS

    P        M        K        N       

HCSHF – Haas Double Square High Feed

 

Toolpath Type: Face Milling, Ramping, Helical Milling, Copy Milling, Axial Plunge Milling

 

17.23° cutting edge | D.O.C. max. 0.07" (1.8mm)

  • Negative axial rake, negative radial rake
  • Positive rake angle for lower cutting forces
  • Strong vibration and impact resistance
  • Large chip pocket for smoother chip evacuation

 

AVAILABLE HAAS GRADES

  • HMP20
  • HMP35

 

APPLICABLE WORKPIECE MATERIALS

    P       M     

HSHF – Haas Square High Feed

 

Toolpath Type: Face Milling, Slotting, Ramping, Helical Milling, Copy Milling, Axial Plunge Milling

 

15° cutting edge | D.O.C. max. 0.071" (1.8mm)

  • 15-degree high feed mill
  • Inserts with 4 cutting edges
  • Ramping possible
  • Double clamping system for inserts

 

AVAILABLE HAAS GRADES

  • HP30
  • HMP20
  • HMP35

 

APPLICABLE WORKPIECE MATERIALS

    P        M      

HS6NP – Haas Sq Shoulder 6 Negative Positive

 

Toolpath Type: Face Milling, Shoulder Milling, Slotting

 

90° cutting edge | D.O.C. max. 0.303" (7.7mm)

  • 90-degree shoulder mill
  • Double-sided, thick insert for high stability and deeper cuts
  • Inserts with 6 cutting edges

 

AVAILABLE HAAS GRADES

  • HP30
  • HMP20
  • HMP35
  • HN25
  • HK25

 

APPLICABLE WORKPIECE MATERIALS

    P        M         K        N      

HPAL – Haas High Positive for Aluminum

 

Toolpath Type: Face Milling, Shoulder Milling, Slotting, Ramping, Helical Milling, Copy Milling

 

90° cutting edge | D.O.C. max. 0.67" (17.0mm)

  • Designed for high-speed machining of aluminum
  • Buffed surface for smooth chip evacuation and reduced BUE
  • High rake angle for good surface finish and lower cutting loads
  • For square shoulder milling and curved surface machining

 

AVAILABLE HAAS GRADES

  • HN25

 

APPLICABLE WORKPIECE MATERIALS

   N     

HIEX/HPSM – Haas High Positive Shell Mill

 

Toolpath Type: Face Milling, Shoulder Milling, Slotting, Ramping, Helical Milling, Copy Milling

 

90° cutting edge | D.O.C. max. 0.649" (16.5mm)

  • Superior perpendicularity and minimized cutting loads
  • Optimized for high-quality surface finishes
  • High rake angle lowers cutting loads and minimizes burrs
  • High-speed and high-feed capability improve productivity

 

AVAILABLE HAAS GRADES

  • HU30
  • HP25
  • MKP30

 

APPLICABLE WORKPIECE MATERIALS

   P      M      K     

HIE – Haas Indexable End Mill

 

Toolpath Type: Face Milling, Shoulder Milling, Slotting, Ramping, Helical Milling, Axial Plunge Milling

 

 

90° cutting edge | D.O.C. max. 0.217" (5.5mm)

  • Superior perpendicularity and minimized cutting loads
  • Optimized for high-quality surface finishes
  • 3-face clamping for stable operation in tough conditions
  • Suitable for plunge milling

 

AVAILABLE HAAS GRADES

  • HU30
  • HU40
  • HP25
  • HN25A

 

APPLICABLE WORKPIECE MATERIALS

   P      M       K      N      

 

HEHF – Haas End Mill High Feed

H

Toolpath Type: Face Milling, Ramping, Helical Milling, Copy Milling, Axial Plunge Milling

 

Curved edge | D.O.C. max. 0.039" (1.0mm)

  • Low entering angle for high feedrates
  • High cost-efficiency, with 4-corner inserts
  • Positive rake angle for lower cutting forces
  • Wide flank face for rigidity and strong clamping

 

AVAILABLE HAAS GRADES

  • HU30A

 

APPLICABLE WORKPIECE MATERIALS

   P      K      H    

HMIEM – Haas Mini Indexable End Mill

 

Toolpath Type: Face Milling, Shoulder Milling, Slotting, Ramping, Helical Milling, Copy Milling

 

90° cutting edge | D.O.C. max. 0.217" (5.5mm)

  • Superior perpendicularity and minimized cutting loads
  • Optimized for high-quality surface finishes
  • High rake angle lowers cutting loads and minimizes burrs
  • High-speed and high-feed capability imrpove productivity

 

AVAILABLE HAAS GRADES

  • HU30
  • HN25A

 

APPLICABLE WORKPIECE MATERIALS

   P      M      K      N      

HRPP – Haas Round Positive Positive

 

Toolpath Type: Face Milling, Shoulder Milling, Slotting, Ramping, Helical Milling, Copy Milling

 

Round edge | D.O.C. max. 0.236" (6.0mm)

  • Superior perpendicularity and minimized cutting loads
  • Optimized for high-quality surface finishes
  • High rake angle lowers cutting loads and minimizes burrs
  • High-speed and high-feed capability improve productivity

 

AVAILABLE HAAS GRADES

  • HU30
  • HU40
  • HP25
  • HN25A
  • HH10

 

APPLICABLE WORKPIECE MATERIALS

   P      M      K      N     

HAPN – Haas Parallelogram Positive Negative

 

Toolpath Type: Face Milling, Shoulder Milling

 

90° cutting edge | D.O.C. max. 0.63" (16.0mm)

  • Positive axial rake, negative radial rake
  • 3D helical cutting edge for lower cutting forces
  • Wiper geometry for high-quality surface finishes
  • Superior perpendicularity and minimized cutting loads

 

AVAILABLE HAAS GRADES

  • HP30
  • HMP20
  • HN25

 

APPLICABLE WORKPIECE MATERIALS

    P      M       N    

HSPP – Haas Square Positive Positive

 

Toolpath Type: Face Milling

 

45° cutting edge | D.O.C. max. 0.236" (6.0mm)

  • Positive axial rake, positive radial rake
  • Large rake angle for faster, easier cutting
  • Inserts with 4 cutting edges

 

AVAILABLE HAAS GRADES

  • HP30
  • HMP20
  • HN25

 

APPLICABLE WORKPIECE MATERIALS

   P      M       N    

HLNP – Haas Rectangle Negative Positive

 

Toolpath Type: Face Milling, Shoulder Milling, Slotting, Helical Milling, Axial Plunge Milling

 

90° cutting edge | D.O.C. max. 0.059/0.098" (1.5/2.5mm)

  • Double-sided inserts with 4 cutting edges
  • Unique geometry for lower cutting loads and longer life 
  • High rake angle with strong, sharp cutting edges
  • Designed for high-efficiency plunge milling

 

AVAILABLE HAAS GRADES

  • HU30
  • HMK15
  • HMP40C

 

APPLICABLE WORKPIECE MATERIALS

   P      M      K      S      H    

HCSNP – Haas C Square Negative Positive

 

Toolpath Type: Face Milling

 

45° cutting edge | D.O.C. max. 0.236" (6.0mm)

  • Negative axial rake, positive radial rake
  • Double-sided, extra-thick insert with 8 cutting edges
  • Low cutting loads and excellent smooth cutting

 

AVAILABLE HAAS GRADES

  • HU30
  • HU40
  • HN25A
  • MKP30
  • HMP40C

 

APPLICABLE WORKPIECE MATERIALS

   P     M      K    N     

HONP – Haas Octagon Negative Positive

 

Toolpath Type: Face Milling

 

45° cutting edge | D.O.C. max. 0.217" (5.5mm)

  • Negative axial rake, positive radial rake
  • Double-sided inserts with 16 cutting edges
  • Special geometry for consistent cutting and long life
  • Strong insert and powerful clamping

 

AVAILABLE HAAS GRADES

  • HU30
  • HU40
  • HN25A
  • MKP30
  • HMP40C

 

APPLICABLE WORKPIECE MATERIALS

   P     M     K     H    

HVPP – Haas 35° Rhombic (V) Positive Positive

 

Toolpath Type: Axial Plunge Milling, Ramping, Shoulder Milling

 

90° cutting edge | D.O.C. max. 0.394" (10.0mm)

  • Positive axial rake, positive radial rake
  • 35-degree rhombic inserts with two different nose radius options
  • High polish for excellent surface finish and reduced built-up edges
  • Large chipbreaker grooves for controlled chip evacuation
  • Low cutting forces due to the positive cutting edge

 

AVAILABLE HAAS GRADES

  • HN25

 

APPLICABLE WORKPIECE MATERIALS

   N    

ISO MATERIAL TYPE

 P - STEEL   M - STAINLESS STEEL   K - CAST IRON   N - ALUMINUM / NON-FERROUS   S - HIGH-TEMP ALLOYS  H- HARDENED METALS 

●  Primary Workpiece Material | ○  Secondary Workpiece Material

HP30

 

APPLICABLE WORKPIECE MATERIALS

 

  ●P   

 

Primary grade for steel. Better at higher speeds. CVD-coated carbide grade for medium operation to roughing of steel at higher cutting speeds. Optimal blend of wear resistance and toughness for a wide range of applications. This grade is not as tough as HMP35.

HMP20

 

APPLICABLE WORKPIECE MATERIALS

 

  ○P    ●M  

 

Primary grade for stainless steel. Secondary grade for steel. PVD multilayer-coated carbide substrate for finishing to medium applications in stainless steel, super alloys, and steel. Optimized coating stability for higher wear resistance and thermal stability in a wide range of applications.

HMP35

 

APPLICABLE WORKPIECE MATERIALS

 

  ●P     ○M  

 

Primary grade for tougher steels. Secondary grade for stainless steel. CVD-coated carbide grade for medium to roughing operations in stainless steel in a wide range of applications. High wear resistance, and resistance to plastic deformation at higher speeds.

HN25

 

APPLICABLE WORKPIECE MATERIALS

 

  ●N  

 

Primary grade for aluminum. Uncoated carbide substrate for fine to medium applications in aluminum and other materials.

HK25

 

APPLICABLE WORKPIECE MATERIALS

 

  ○P     ●K  

 

Primary grade for cast iron. Secondary grade for steel. CVD-coated carbide substrate. Optimized for medium to roughing operations in cast iron and steel. Good wear resistance and toughness at higher cutting speeds.

MKP30

 

APPLICABLE WORKPIECE MATERIALS

 

  ○P      ●K  

 

Primary grade for cast iron. Secondary grade for steel. CVD-coated milling grade for high-productivity and high-speed machining of cast iron and steels. The substrate has high toughness and thermal conductivity, and the high-performance CVD coating layer provides excellent heat resistance. Surface treatment after coating with MT-TiCN + Al₂O₃ provides high resistance to chipping and cracking. This grade has the highest starting surface speeds in steels.

HP25

 

APPLICABLE WORKPIECE MATERIALS

 

  ●P  

 

Primary grade for steel. Excellent chip-removal rates, due to a tough substrate specialized for steel, and a PVD coating with high-hardness and good lubricity. Highly chip-resistant to provide good surface finish and extended tool life under various cutting conditions. This grade has a medium starting surface speed in steel, compared with the other grades.

 

HS Chip breaker: for machining with low cutting loads. Guarantees long tool life and accurate machining in light cutting, and machining heat-resistant super alloys.

 

MHS Chip breaker: for general milling.

HU30

 

APPLICABLE WORKPIECE MATERIALS

 

 ○P   ●M    ○K  

 

Universal PVD grade for steel, stainless, cast iron, and heat-resistant super alloys. This titanium aluminum nitride (TiAlN) coated insert is a superior universal grade for steel, cast iron, heat-resistant super alloys, and stainless steel. The coating and ultra-fine grain provide wear resistance and oxidation resistance. Stable machining results from excellent edge hardness and chipping resistance, although starting surface speeds are not as high as other grades.

 

HS Chip breaker: for machining with low cutting loads. Guarantees long tool life and accurate machining in light cutting, and machining heat-resistant super alloys.

 

MHS Chip breaker: for general milling.

HU40

 

APPLICABLE WORKPIECE MATERIALS

 

  ●P  ●M   ●K  

 

A universal grade with AlCiN PVD coating that provides superior lubrication and extreme toughness for medium- to low-speed machining. For cutting tougher materials, stainless steel, steel, and cast iron at medium and low speeds. Stable machining results, with good resistance to fracture, welding, and chipping.

HN25A

 

APPLICABLE WORKPIECE MATERIALS

 

  ●N  

 

Primary grade for aluminum. Uncoated grade for non-ferrous alloys. A special buffed surface treatment improves resistance to chipping and chip welding, and the ultra-fine substrate increases resistance to wear and chipping.

HU30A

 

APPLICABLE WORKPIECE MATERIALS

 

  ●P    ●K    ○H  

 

Ultra-dense PVD coating, with optimal thermal resistance and strength. This titanium aluminum nitride (TiAIN) coated insert is a superior universal grade for steel, cast iron, and heat-resistant super alloys. The coating and ultra-fine grain provide wear resistance and oxidation resistance.

 

Reinforced Edge Chip Breaker: For use with high-alloy steel, hardened steel, and cast iron. Reinforced edge increases tool life for machining tougher materials.

 

General Chip Breaker: For general milling

HH10

 

APPLICABLE WORKPIECE MATERIALS

 

  ●P  

 

PVD coated grade for roughing pre-hardened steels. It is ideal for interrupted cutting of hardened steels, and wet cutting where thermal shock is present. The ultra-fine substrate provides high toughness and improved wear resistance, while the PVD surface treatment improves surface finish.

HKP40

 

APPLICABLE WORKPIECE MATERIALS

 

  ○P     ●K  

 

Primary grade for cast iron. Secondary grade for steel. CVD-coated milling grade for machining cast iron and steels with high toughness. The substrate has high toughness and thermal conductivity, and the high-performance CVD coating layer provides excellent heat resistance. Surface treatment after coating with MT-TiCN + Al₂O₃ provides high resistance to chipping and cracking.

HMP40C

 

APPLICABLE WORKPIECE MATERIALS

 

  ●P    ●K  

 

Primary grade for tough steels and cast iron. CVD-coated carbide grade for interrupted cutting in steel, and continuous cutting in cast iron. High wear resistance, and resistance to plastic deformation. The substrate has high toughness and thermal conductivity, with a high-performance CVD coating layer that provides excellent heat resistance. Surface treatment after coating with MT-TiCN + Al₂O₃ provides high resistance to chipping and cracking.

HMK15

 

APPLICABLE WORKPIECE MATERIALS

 

  ●K   

 

Primary grade for aluminum. Uncoated grade for non-ferrous alloys. A special buffed surface treatment improves resistance to chipping and chip welding, and the ultra-fine substrate increases resistance to wear and chipping.

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