TWINDUR EU SC 90° countersink DIN 335C - CNTSNK-CONI-EU-SC-90DGR-TWINDUR-D25,0MM

TWINDUR EU SC 90° countersink DIN 335C - CNTSNK-CONI-EU-SC-90DGR-TWINDUR-D25,0MM - 1

TWINDUR EU SC 90° countersink DIN 335C - CNTSNK-CONI-EU-SC-90DGR-TWINDUR-D25,0MM - 2

TWINDUR EU SC 90° countersink DIN 335C

Name: TWINDUR EU SC 90° countersink DIN 335C
Brand: Würth
SKU: 5443120025

Conical countersink EU solid carbide Twindur
CNTSNK-CONI-EU-SC-90DGR-TWINDUR-D25,0MM
ZEBRA

Art.-no. 5443120025

EAN 4058794441581

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TWINDUR EU SC 90° countersink DIN 335C

Art.-no. 5443120025

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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


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)	25.0 mm
Shank diameter (d2)	10 mm
Tip diameter (d3)	3.8 mm
Suitable for screw	M12
Length (l1)	67 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	v_c	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
General structural steels	≤ 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
Alloyed heat-treated steels	≤ 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
Nitriding steels	≤ 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
Tool steels	≤ 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
Cast iron	≤ 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
Spheroidal-graphite and malleable iron	≤ 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
Titanium and titanium alloys	≤ 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
Bronze, short-chipping	≤ 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
Bronze, long-chipping	≤ 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
v_c = 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	v_c	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
General structural steels	≤ 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
Alloyed heat-treated steels	≤ 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
Nitriding steels	≤ 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
Tool steels	≤ 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
Cast iron	≤ 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
Spheroidal-graphite and malleable iron	≤ 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
Titanium and titanium alloys	≤ 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
Bronze, short-chipping	≤ 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
Bronze, long-chipping	≤ 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

Price
/PU

CUT+COOL drilling and cutting oil

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

Art.-no. 0893050004

Multi cutting oil for light to medium machining work

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