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Multi-step drill bit DIN 8377 Type N MK HSS ground 180° M12, 13.5 x 20 mm

Multi-step drill bit DIN 8377 Type N MK HSS ground 180° M12, 13.5 x 20 mm

Multi-step drill bit DIN 8377 Type N MK HSS ground 180° M12, 13.5 x 20 mm
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Item no: 1010862 107 

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Available in 6-8 working days.

Application
For making screw through-bores and countersinks DIN EN 20273, screw head countersinking shape H, J and K. Medium design in accordance with DIN 74 Part 2. Cylinder screws in accordance with DIN 84, DIN 912, DIN 6912, DIN 7513, DIN 7984. For drilling in steel and cast steel, alloyed and unalloyed up to 900 N/mm² strength, grey cast iron, aluminium alloys, bronze, brass.

Execution
  • With Morse taper shank and flat tangs
  • Countersink angle 180°
  • Cone polished section
  • Thinned chisel edge and surface treatment
  • HSS, ground

Notes
When working with step drills, the cutting speed is based on the large diameter (d1), the feed is based on the small diameter (d2).

Brand: HARTNER
Material to be processed: Steel
Cutting material: HSS
Surface: Vaporised
Angle of the tip: 118 Degree
Coolant supply: External
Tool holding device: Morse taper shank
Suitable for screw thread: M12
Pilot hole diameter (d1): 13,5 mm
Spot-facer diameter (d2): 20,0 mm
Pilot hole length (l3): 27 mm
Chip flute length (l2): 140 mm
Length (l1): 238 mm
Morse taper size: MK 2
f steel 700: 0,28 mm/r
Countersink angle: 180 Degree
Cutting direction: Right-hand cutting
Number of cutting edges: 2
Cutting speed (aluminium long) suitability: 2
Cutting speed (aluminium long) Vc: 45,00 m/min
Cutting speed (aluminium short) suitability: 2
Cutting speed (aluminium short) Vc: 55,00 m/min
Cutting speed (brass long) suitability: 2
Cutting speed (brass long) Vc: 30,00 m/min
Cutting speed (brass short) suitability: 2
Cutting speed (brass short) Vc: 60,00 m/min
Cutting speed (bronze long) suitability: 2
Cutting speed (bronze long) Vc: 30,00 m/min
Cutting speed (bronze short) suitability: 2
Cutting speed (bronze short) Vc: 60,00 m/min
Cutting speed (cast) suitability: 2
Cutting speed (cast) Vc: 25,00 m/min
Cutting speed (graphite/carbon-fibre reinforced) suitability: 3
Cutting speed (hard 55) suitability: 3
Cutting speed (hard 65) suitability: 3
Cutting speed (nickel) suitability: 3
Cutting speed (plastic) suitability: 2
Cutting speed (plastic) Vc: 35,00 m/min
Cutting speed (steel 1000) suitability: 1
Cutting speed (steel 1000) Vc: 20,00 m/min
Cutting speed (steel 1300) suitability: 3
Cutting speed (steel 700) suitability: 1
Cutting speed (steel 700) Vc: 25,00 m/min
Cutting speed (super) suitability: 3
Cutting speed (titanium) suitability: 3
Cutting speed (VA mar) suitability: 3
Cutting speed (VA off) suitability: 3
Max. f in cast iron: 0,23 mm/r
Max. f in non-ferrous metals: 0,27 mm/r
Max. f in steel: 0,28 mm/r
Min. f in cast iron: 0,23 mm/r
Min. f in non-ferrous metals: 0,22 mm/r
Min. f in steel: 0,28 mm/r
Min./max. f in cast iron: 0.23-0.23 mm/U
Min./max. f in non-ferrous metals: 0.22-0.27 mm/U
Min./max. f in steel: 0.28-0.28 mm/U
Shank style: Morse taper

Manufacturer part no.: 85610 20

EAN no.: 4031096129661

Product Datasheet Datasheet cutting values
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