TiN 90° countersink DIN 335C

Name: TiN 90° countersink DIN 335C
Brand: Würth
SKU: 069402025

Conical countersink HSS, titanium-nitride
CNTSNK-CONI-MA-HSS-90DGR-TIN-D25MM
ZEBRA

Art.-no. 069402025

EAN 4011231603508

All versions

Specification

Significantly improved performance when processing conventional steels and cast iron compared to blue ring.

Up to 30 % faster cutting speeds and 2-4x longer service life compared to blue ring

TiN coating

Burr- and chatter-free countersinking and deburring

Precision conical countersink with three cutting edges, precision-ground

Optimised flute geometry

Excellent chip formation and removal

Product packaging made from 100 % PCR (recycled plastic from household waste) and 100 % recyclable

Technical information


Material to be processed	Steel, Cast metal
Quality	ZEBRA-Premium
Spot-facer diameter (d1)	25.0 mm
Shank diameter (d2)	10 mm
Tip diameter (d3)	3.8 mm
Length (l1)	67 mm
Number of cutting edges (Z)	3 PCS
Standards	DIN 335
Form	C
Cutting material	HSS
Countersink angle	90 Degree
Surface	TiN
Shank style	Cylindrical
Service life (points system)	3 of 4 points
Countersinking speed (point system)	3 of 4 points
Countersinking quality (point system)	2 of 4 points
Versatility (points system)	1 of 4 points
Countersinking behaviour (point system)	2 of 4 points
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

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.

Assignment of conical countersink to screw standards
Conical countersink nominal diameter d1	For countersunk head screws	For countersunk head screws
	DIN EN ISO 10642 (formerly DIN 7991)	DIN EN ISO 2009, 2010, 7046, 7047 (formerly DIN 963,964,965,966)
6.3 mm	M3	M3
8.3 mm	M4	-
10.4 mm	M5	M4, M5
12.4 mm	M6	M6
16.5 mm	M8	M8
20.5 mm	-	M10
25.0 mm	M10, M12	M12
31.0 mm	M16	-

For dia. 16.5-31
Material designation	Tensile strength	v_c	f
			Dia. 16.5	Dia. 20.5	Dia. 25	Dia. 31
Steels
General structural steels	≤ 500 N/mm²	35	0,170	0,180	0,210	0,240
General structural steels	≤ 1,000 N/mm²	33	0,110	0,130	0,150	0,170
Unalloyed quenched and tempered steels	≤ 700 N/mm²	35	0,170	0,180	0,210	0,240
	≤ 850 N/mm²	33	0,170	0,180	0,210	0,240
	≤ 1,000 N/mm²	22	0,110	0,130	0,150	0,170
Alloyed quenched and tempered steels	≤ 1,000 N/mm²	17	0,170	0,180	0,210	0,240
Alloyed quenched and tempered steels	≤ 1,400 N/mm²	13	0,110	0,130	0,150	0,170
Nitriding steels	≤ 1,000 N/mm²	17	0,110	0,130	0,150	0,170
Nitriding steels	≤ 1,400 N/mm²	13	0,070	0,080	0,090	0,120
Tool steels	≤ 850 N/mm²	19	0,110	0,130	0,150	0,170
Tool steels	≤ 1,400 N/mm²	17	0,070	0,080	0,090	0,120
High-speed steels	≤ 1,400 N/mm²	17	0,070	0,080	0,090	0,120
Cast metals
Cast iron	≤ 240 HB	19	0,170	0,180	0,210	0,240
Cast iron	≤ 350 HB	17	0,170	0,180	0,210	0,240
Spheroidal graphite and malleable iron	≤ 240 HB	17	0,170	0,180	0,210	0,240
Spheroidal graphite and malleable iron	≤ 350 HB	17	0,170	0,180	0,210	0,240
Chilled cast iron	≤ 350 HB	12	0,070	0,080	0,090	0,120

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
Steels
General structural steels	≤ 500 N/mm²	35	0,120	0,130	0,135	0,150
General structural steels	≤ 1,000 N/mm²	33	0,070	0,080	0,090	0,100
Unalloyed quenched and tempered steels	≤ 700 N/mm²	35	0,120	0,130	0,140	0,150
	≤ 850 N/mm²	33	0,120	0,130	0,135	0,150
	≤ 1,000 N/mm²	22	0,070	0,080	0,090	0,100
Alloyed quenched and tempered steels	≤ 1,000 N/mm²	17	0,120	0,130	0,140	0,150
Alloyed quenched and tempered steels	≤ 1,400 N/mm²	13	0,070	0,080	0,090	0,100
Nitriding steels	≤ 1,000 N/mm²	17	0,070	0,080	0,090	0,100
Nitriding steels	≤ 1,400 N/mm²	13	0,040	0,050	0,060	0,060
Tool steels	≤ 850 N/mm²	19	0,070	0,080	0,090	0,100
Tool steels	≤ 1,400 N/mm²	17	0,040	0,050	0,060	0,060
High-speed steels	≤ 1,400 N/mm²	17	0,040	0,050	0,060	0,060
Cast metals
Cast iron	≤ 240 HB	19	0,120	0,130	0,140	0,150
Cast iron	≤ 350 HB	17	0,120	0,130	0,140	0,150
Spheroidal graphite and malleable iron	≤ 240 HB	17	0,120	0,130	0,140	0,150
Spheroidal graphite and malleable iron	≤ 350 HB	17	0,120	0,130	0,140	0,150
Chilled cast iron	≤ 350 HB	12	0,040	0,050	0,060	0,060

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