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Multi-step drill bit DIN 8374 type N cyl. HSS ground 90° M3, 3.4 x 6.6 mm

Versions

Item no: 1010850 101

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Still in stock: 8

Min. order quantity: 1

Application
For making screw through-bores DIN EN 20273, screw head countersinking shape A medium DIN 74 Part 1. Screw countersinks DIN 963 to 966.

Execution

Countersink angle 90°
With straight shank
Tip angle 118°
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: Cylinder shank
Suitable for screw thread: M3
Pilot hole diameter (d1): 3,4 mm
Spot-facer diameter (d2): 6,6 mm
Pilot hole length (l3): 9 mm
Chip flute length (l2): 63 mm
Length (l1): 101 mm
Shank diameter: 6,6 mm
f steel 700: 0,08 mm/r
Countersink angle: 90 Degree
Cutting direction: Right-hand cutting
DIN: 8374
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: 0,10 mm/r
Max. f in non-ferrous metals: 0,12 mm/r
Max. f in steel: 0,08 mm/r
Min. f in cast iron: 0,10 mm/r
Min. f in non-ferrous metals: 0,08 mm/r
Min. f in steel: 0,08 mm/r
Min./max. f in cast iron: 0.10-0.10 mm/U
Min./max. f in non-ferrous metals: 0.08-0.12 mm/U
Min./max. f in steel: 0.08-0.08 mm/U
Shank style: Cylindrical

Manufacturer part no.: 85110 6,6

EAN no.: 4031096118887

Product Datasheet Datasheet cutting values