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TWINDUR EU SC 90° countersink DIN 335C - CNTSNK-CONI-EU-SC-90DGR-TWINDUR-D20,5MM TWINDUR EU SC 90° countersink DIN 335C - CNTSNK-CONI-EU-SC-90DGR-TWINDUR-D20,5MM TWINDUR EU SC 90° countersink DIN 335C - CNTSNK-CONI-EU-SC-90DGR-TWINDUR-D20,5MM TWINDUR EU SC 90° countersink DIN 335C - CNTSNK-CONI-EU-SC-90DGR-TWINDUR-D20,5MM
TWINDUR EU SC 90° countersink DIN 335C - CNTSNK-CONI-EU-SC-90DGR-TWINDUR-D20,5MM - 1
TWINDUR EU SC 90° countersink DIN 335C - CNTSNK-CONI-EU-SC-90DGR-TWINDUR-D20,5MM - 2
TWINDUR EU SC 90° countersink DIN 335C - CNTSNK-CONI-EU-SC-90DGR-TWINDUR-D20,5MM - 3
TWINDUR EU SC 90° countersink DIN 335C - CNTSNK-CONI-EU-SC-90DGR-TWINDUR-D20,5MM - 4

TWINDUR EU SC 90° countersink DIN 335C

Conical countersink EU solid carbide Twindur
CNTSNK-CONI-EU-SC-90DGR-TWINDUR-D20,5MM
ZEBRA

Art.-no. 5443120020
EAN 4058794441574
All versions

Price for selected packaging unit
TWINDUR EU SC 90° countersink DIN 335C

Art.-no. 5443120020

Price for selected packaging unit
Quantity
PU
x 1 pcs

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A Jack of all trades with extremely uneven pitch (EU) and TWINDUR coating for perfect cuts and maximum performance.

Extremely uneven pitch


  • Optimal surface quality: accurate, round, chatter-free cuts

  • Faster processing thanks to higher cutting speeds

  • Significantly reduced tool wear

  • Supremely quiet operation in all materials

  • Significantly less infeed force required


Solid carbide


  • Specially designed for use in CNC machines for reliable and standardised manufacture

  • Long service life and high cutting speed


Suitable for universal use


Processing of almost all materials possible thanks to special tip geometry and solid carbide cutting material.



High cutting performance


thanks to special multilayer coating

Notice

See overview tables for countersink/material assignments

Product information

Würth Catalogue

Datasheets(X)

Certificates/ Documents

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Material to be processed

Steel, Cast metal, Stainless steel, Titanium, Special alloy, Hard and tough material, Non-ferrous metal, Plastic

Quality

ZEBRA-Premium

Spot-facer diameter (d1)

20.5 mm

Shank diameter (d2)

10 mm

Tip diameter (d3)

3.5 mm

Suitable for screw

M10

Length (l1)

63 mm

Number of cutting edges (Z)

3 PCS

Standards

DIN 335

Form

C

Cutting material

SC

Countersink angle

90 Degree

Surface

TWINDUR

Shank style

Cylindrical

Suitable for cordless drills (points system)

1 of 4 points

Suitable for drill (points system)

1 of 4 points

Suitable for upright drilling machine (points system)

3 of 4 points

Suitable for milling-drilling centre (points system)

4 of 4 points

Service life (points system)

4 of 4 points

Countersinking speed (point system)

4 of 4 points

Countersinking quality (point system)

4 of 4 points

Versatility (points system)

4 of 4 points

Countersinking behaviour (point system)

4 of 4 points

Tolerance of cutting edge diameter

z9

Tolerance of shank diameter

h9

Material of sub-group

General structural steels, Non-alloyed tempering steels, Alloyed tempering steels, Nitriding steels, Tool steels, High-speed steels, Cast iron, Ductile iron, Malleable cast iron, White cast iron, Stainless steels, sulphurated, Stainless steels, austenitic, Stainless steels, martensitic, Titanium, Titanium alloys, Special alloys, Hardox, Spring steels, Aluminium alloys, Aluminium wrought alloys, Aluminium casting alloys (>10% silicon), Aluminium casting alloys (<10% silicon), Magnesium alloys, Copper, Brass, short-chipping, Brass, long-chipping, Bronze, short-chipping, Bronze, long-chipping, Plastics, thermoset, Plastics, thermoplastic, Plastics, aramide-fibre reinforced, Plastics, glass/carbon-fibre-reinforced

Cutting values
For dia. 6.3–12.4
Material designation Tensile strength vc f
Dia. 6.3 Dia. 8.3 Dia. 10.4 Dia. 12.4
General structural steels ≤ 500 N/mm² 70 0,108 0,135 0,135 0,162
≤ 1000 N/mm² 65 0,108 0,135 0,135 0,162
Unalloyed heat-treated steels ≤ 700 N/mm² 65 0,108 0,135 0,135 0,162
≤ 850 N/mm² 65 0,108 0,135 0,135 0,162
≤ 1000 N/mm² 55 0,081 0,108 0,108 0,135
Alloyed heat-treated steels ≤ 1000 N/mm² 55 0,081 0,108 0,108 0,135
≤ 1400 N/mm² 40 0,081 0,108 0,108 0,135
Nitriding steels ≤ 1000 N/mm² 55 0,081 0,108 0,108 0,135
≤ 1400 N/mm² 40 0,081 0,108 0,108 0,135
Tool steels ≤ 850 N/mm² 55 0,081 0,108 0,108 0,135
≤ 1400 N/mm² 40 0,054 0,081 0,081 0,108
High-speed steels ≤ 1400 N/mm² 40 0,054 0,081 0,081 0,108
Cast iron ≤ 240 HB 50 0,135 0,162 0,189 0,216
≤ 350 HB 45 0,135 0,162 0,189 0,216
Spheroidal-graphite and malleable iron ≤ 240 HB 45 0,135 0,162 0,189 0,216
≤ 350 HB 40 0,135 0,162 0,189 0,216
Chilled cast iron ≤ 350 HB 35 0,081 0,108 0,108 0,135
Stainless steels, sulphurated ≤ 900 N/mm² 30 0,068 0,081 0,081 0,095
Stainless steels, austenitic ≤ 1100 N/mm² 25 0,068 0,081 0,081 0,095
Stainless steels, martensitic ≤ 1200 N/mm² 25 0,068 0,081 0,081 0,095
Titanium and titanium alloys ≤ 850 N/mm² 20 0,054 0,081 0,081 0,108
≤ 1400 N/mm² 20 0,054 0,081 0,081 0,108
Special alloys ≤ 1600 N/mm² 15 0,068 0,081 0,081 0,095
Hardox Hardox 400–500, XAR 320, XAR 400 10 0,068 0,081 0,081 0,095
Spring steels ≤ 350 HB 20 0,068 0,081 0,081 0,095
Aluminium and aluminium alloys ≤ 400 N/mm² 160 0,135 0,162 0,189 0,216
Wrought aluminium alloys ≤ 650 N/mm² 100 0,135 0,162 0,189 0,216
Cast aluminium alloys ≤ 10% Si ≤ 600 N/mm² 80 0,108 0,135 0,135 0,162
Cast aluminium alloys > 10% Si ≤ 600 N/mm² 60 0,108 0,135 0,135 0,162
Magnesium alloys ≤ 400 N/mm² 80 0,081 0,108 0,108 0,135
Copper, low-alloyed ≤ 500 N/mm² 80 0,135 0,162 0,189 0,216
Brass, short-chipping ≤ 600 N/mm² 70 0,162 0,189 0,216 0,243
Brass, long-chipping ≤ 600 N/mm² 70 0,162 0,189 0,216 0,243
Bronze, short-chipping ≤ 600 N/mm² 70 0,162 0,189 0,216 0,243
≤ 850 N/mm² 70 0,162 0,189 0,216 0,243
Bronze, long-chipping ≤ 850 N/mm² 70 0,162 0,189 0,216 0,243
≤ 1000 N/mm² 70 0,162 0,189 0,216 0,243
Plastics ≤ 150 N/mm² 70 0,162 0,189 0,216 0,243
Legend
vc = cutting speed [m/min]
f = feed (mm/r)
The suggested cutting values are reference values and must be adapted to the respective conditions.
Cutting values
For dia. 16.5–31
Material designation Tensile strength vc f
Dia. 16.5 Dia. 20.5 Dia. 25 Dia. 31
General structural steels ≤ 500 N/mm² 70 0,162 0,189 0,243 0,270
≤ 1000 N/mm² 65 0,162 0,189 0,243 0,270
Unalloyed heat-treated steels ≤ 700 N/mm² 65 0,162 0,189 0,243 0,270
≤ 850 N/mm² 65 0,162 0,189 0,243 0,270
≤ 1000 N/mm² 55 0,135 0,162 0,216 0,243
Alloyed heat-treated steels ≤ 1000 N/mm² 55 0,135 0,162 0,216 0,243
≤ 1400 N/mm² 40 0,135 0,162 0,216 0,243
Nitriding steels ≤ 1000 N/mm² 55 0,135 0,162 0,216 0,243
≤ 1400 N/mm² 40 0,135 0,162 0,216 0,243
Tool steels ≤ 850 N/mm² 55 0,135 0,162 0,216 0,243
≤ 1400 N/mm² 40 0,108 0,135 0,162 0,189
High-speed steels ≤ 1400 N/mm² 40 0,108 0,135 0,162 0,189
Cast iron ≤ 240 HB 50 0,243 0,270 0,297 0,324
≤ 350 HB 45 0,243 0,270 0,297 0,324
Spheroidal-graphite and malleable iron ≤ 240 HB 45 0,243 0,270 0,297 0,324
≤ 350 HB 40 0,243 0,270 0,297 0,324
Chilled cast iron ≤ 350 HB 35 0,135 0,162 0,216 0,243
Stainless steels, sulphurated ≤ 900 N/mm² 30 0,095 0,108 0,135 0,162
Stainless steels, austenitic ≤ 1100 N/mm² 25 0,095 0,108 0,135 0,162
Stainless steels, martensitic ≤ 1200 N/mm² 25 0,095 0,108 0,135 0,162
Titanium and titanium alloys ≤ 850 N/mm² 20 0,108 0,135 0,162 0,189
≤ 1400 N/mm² 20 0,108 0,135 0,162 0,189
Special alloys ≤ 1600 N/mm² 15 0,095 0,108 0,135 0,162
Hardox Hardox 400–500, XAR 320, XAR 400 10 0,095 0,108 0,135 0,162
Spring steels ≤ 350 HB 20 0,095 0,108 0,135 0,162
Aluminium and aluminium alloys ≤ 400 N/mm² 160 0,243 0,270 0,297 0,324
Wrought aluminium alloys ≤ 650 N/mm² 100 0,243 0,270 0,297 0,324
Cast aluminium alloys ≤ 10% Si ≤ 600 N/mm² 80 0,162 0,189 0,243 0,270
Cast aluminium alloys > 10% Si ≤ 600 N/mm² 60 0,162 0,189 0,243 0,270
Magnesium alloys ≤ 400 N/mm² 80 0,135 0,162 0,216 0,243
Copper, low-alloyed ≤ 500 N/mm² 80 0,243 0,270 0,297 0,324
Brass, short-chipping ≤ 600 N/mm² 70 0,270 0,297 0,324 0,351
Brass, long-chipping ≤ 600 N/mm² 70 0,270 0,297 0,324 0,351
Bronze, short-chipping ≤ 600 N/mm² 70 0,270 0,297 0,324 0,351
≤ 850 N/mm² 70 0,270 0,297 0,324 0,351
Bronze, long-chipping ≤ 850 N/mm² 70 0,270 0,297 0,324 0,351
≤ 1000 N/mm² 70 0,270 0,297 0,324 0,351
Plastics ≤ 150 N/mm² 70 0,270 0,297 0,324 0,351
Additive article:
 
Product
Description
Quantity
PU
Price
/PU
CUT+COOL drilling and cutting oil
CUT+COOL drilling and cutting oil

CUTOIL-DRILL-(CUT-COOL)-400ML

Multi cutting oil for light to medium machining work
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Product information

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