SC 90° countersink DIN 335C - CNTSNK-CONI-90DGR-DIN335C-SC-D20,5MM

SC 90° countersink DIN 335C

Name: SC 90° countersink DIN 335C
Brand: Würth
SKU: 5443100009

Conical countersink VHM DIN 335 FC
CNTSNK-CONI-90DGR-DIN335C-SC-D20,5MM

Art.-no. 5443100009

EAN 4055375892626

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SC 90° countersink DIN 335C

Art.-no. 5443100009

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For chatter-free countersinking and deburring of steels, high-strength steels, grey cast iron, VA materials and silicon-containing aluminium alloys.

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Würth Catalogue

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Product code	6405
Material to be processed	Steel, Cast metal, Stainless steel, Titanium, Hard and tough material
Spot-facer diameter (d1)	20.5 mm
Shank diameter (d2)	10 mm
Tip diameter (d3)	3.5 mm
Length (l1)	63 mm
Number of cutting edges (Z)	3 PCS
Standards	DIN 335
Form	C
Cutting material	SC
Countersink angle	90 Degree
Surface	Uncoated
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)	2 of 4 points
Countersinking speed (point system)	2 of 4 points
Countersinking quality (point system)	2 of 4 points
Versatility (points system)	3 of 4 points
Countersinking behaviour (point system)	2 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, Plastics, aramide-fibre reinforced, Alloyed tempering steels, Nitriding steels, Tool steels, High-speed steels, Cast iron, Ductile iron, Malleable cast iron, White cast iron, Stainless steels, austenitic, Stainless steels, sulphurated, Stainless steels, martensitic, Titanium, Titanium alloys, Special alloys, Hardox, Spring steels, Aluminium casting alloys (>10% silicon), Aluminium casting alloys (<10% silicon), Brass, short-chipping, Bronze, short-chipping

Cutting values for countersinks, uncoated
For dia. 5.3–14.4
Material designation	Tensile strength	v_c		f
		From	To	Dia. 5.3	Dia. 6.3/8.3	Dia. 10.4/12.4/14.4
General structural steels	< 500 N/mm²	55	70	0,070	0,090	0,120
General structural steels	500–850 N/mm²	55	65	0,060	0,080	0,100
Machining steels	< 850 N/mm²	55	65	0,060	0,080	0,100
Machining steels	850–1000 N/mm²	40	55	0,040	0,060	0,080
Unalloyed heat-treated steels	< 700 N/mm²	55	65	0,060	0,080	0,100
	700–850 N/mm²	55	65	0,060	0,080	0,100
	850–1000 N/mm²	40	55	0,040	0,060	0,080
Alloyed heat-treated steels	850–1000 N/mm²	40	55	0,040	0,060	0,080
Alloyed heat-treated steels	1000–1200 N/mm²	13	22	0,030	0,040	0,050
Non-alloyed case-hardening steels	< 750 N/mm²	55	65	0,060	0,080	0,100
Alloyed case-hardening steels	< 1000 N/mm²	40	55	0,040	0,060	0,080
Alloyed case-hardening steels	1000–1200 N/mm²	13	22	0,030	0,040	0,050
Nitriding steels	< 1000 N/mm²	40	55	0,040	0,060	0,080
Nitriding steels	1000–1200 N/mm²	13	22	0,030	0,040	0,050
Tool steels	< 850 N/mm²	40	55	0,040	0,060	0,080
	850–1100 N/mm²	13	22	0,030	0,040	0,050
	1100–1400 N/mm²	5	12	0,090	0,030	0,040
High-speed steels	850–1200 N/mm²	13	22	0,030	0,040	0,050
Hardened steels	48–55 HRC	5	12	0,090	0,030	0,040
Hardened steels	55–60 HRC	5	12	0,090	0,030	0,040
Wear-resistant constructional steel	1350 N/mm²	5	12	0,090	0,030	0,040
Wear-resistant constructional steel	1800 N/mm²	5	12	0,090	0,030	0,040
Spring steels	< 1200 N/mm²	13	22	0,030	0,040	0,050
Stainless steels, sulphurated	< 700 N/mm²	10	22	0,040	0,050	0,060
Stainless steels, austenitic	< 700 N/mm²	10	22	0,040	0,050	0,060
Stainless steels, austenitic	< 850 N/mm²	10	22	0,040	0,050	0,060
Stainless steels, martensitic	< 1100 N/mm²	10	22	0,040	0,050	0,060
Special alloys	< 1200 N/mm²	5	12	0,090	0,030	0,040
Cast iron	< 180 HB	35	55	0,080	0,100	0,120
Cast iron	> 180 HB	20	35	0,060	0,070	0,080
Spheroidal graphite, malleable iron	> 180 HB	20	35	0,060	0,070	0,080
Spheroidal graphite, malleable iron	> 260 HB	20	35	0,060	0,070	0,080
Titanium, titanium alloys	< 850 N/mm²	10	22	0,040	0,050	0,060
Aluminium, aluminium alloys	< 530 N/mm²	110	200	0,100	0,120	0,140
Aluminium, cast aluminium alloys < 10% Si	< 600 N/mm²	55	90	0,080	0,100	0,120
Aluminium, cast aluminium alloys > 10% Si	< 600 N/mm²	25	70	0,080	0,100	0,120
Magnesium, magnesium alloys	< 280 N/mm²	110	200	0,100	0,120	0,140
Copper, low-alloyed	< 350 N/mm²	55	90	0,080	0,100	0,120
Brass, short-chipping	< 600 N/mm²	110	175	0,100	0,120	0,140
Brass, long-chipping	< 600 N/mm²	70	110	0,100	0,120	0,140
Bronze, short-chipping	< 600 N/mm²	110	175	0,100	0,120	0,140
Bronze, short-chipping	650–850 N/mm²	110	175	0,100	0,120	0,140
Bronze, long-chipping	< 850 N/mm²	70	110	0,100	0,120	0,140
Bronze, long-chipping	850–1200 N/mm²	70	110	0,100	0,120	0,140
Graphite		35	55	0,080	0,100	0,120

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 countersinks, uncoated
For dia. 16.5–31
Material designation	Tensile strength	v_c		f
		From	To	Dia. 16.5/19.5	Dia. 20.5	Dia. 25/31
General structural steels	< 500 N/mm²	55	70	0,140	0,160	0,200
General structural steels	500–850 N/mm²	55	65	0,120	0,140	0,180
Machining steels	< 850 N/mm²	55	65	0,120	0,140	0,180
Machining steels	850–1000 N/mm²	40	55	0,100	0,120	0,140
Unalloyed heat-treated steels	< 700 N/mm²	55	65	0,120	0,140	0,180
	700–850 N/mm²	55	65	0,120	0,140	0,180
	850–1000 N/mm²	40	55	0,100	0,120	0,140
Alloyed heat-treated steels	850–1000 N/mm²	40	55	0,100	0,120	0,140
Alloyed heat-treated steels	1000–1200 N/mm²	13	22	0,090	0,080	0,100
Non-alloyed case-hardening steels	< 750 N/mm²	55	65	0,120	0,140	0,180
Alloyed case-hardening steels	< 1000 N/mm²	40	55	0,100	0,120	0,140
Alloyed case-hardening steels	1000–1200 N/mm²	13	22	0,090	0,080	0,100
Nitriding steels	< 1000 N/mm²	40	55	0,100	0,120	0,140
Nitriding steels	1000–1200 N/mm²	13	22	0,090	0,080	0,100
Tool steels	< 850 N/mm²	40	55	0,100	0,120	0,140
	850–1100 N/mm²	13	22	0,090	0,080	0,100
	1100–1400 N/mm²	5	12	0,050	0,060	0,080
High-speed steels	850–1200 N/mm²	13	22	0,090	0,080	0,100
Hardened steels	48–55 HRC	5	12	0,050	0,060	0,080
Hardened steels	55–60 HRC	5	12	0,050	0,060	0,080
Wear-resistant constructional steel	1350 N/mm²	5	12	0,050	0,060	0,080
Wear-resistant constructional steel	1800 N/mm²	5	12	0,050	0,060	0,080
Spring steels	< 1200 N/mm²	13	22	0,090	0,080	0,100
Stainless steels, sulphurated	< 700 N/mm²	10	22	0,070	0,080	0,090
Stainless steels, austenitic	< 700 N/mm²	10	22	0,070	0,080	0,090
Stainless steels, austenitic	< 850 N/mm²	10	22	0,070	0,080	0,090
Stainless steels, martensitic	< 1100 N/mm²	10	22	0,070	0,080	0,090
Special alloys	< 1200 N/mm²	5	12	0,050	0,060	0,080
Cast iron	< 180 HB	35	55	0,160	0,200	0,250
Cast iron	> 180 HB	20	35	0,120	0,160	0,200
Spheroidal graphite, malleable iron	> 180 HB	20	35	0,120	0,160	0,200
Spheroidal graphite, malleable iron	> 260 HB	20	35	0,120	0,160	0,200
Titanium, titanium alloys	< 850 N/mm²	10	22	0,070	0,080	0,090
Aluminium, aluminium alloys	< 530 N/mm²	110	200	0,180	0,220	0,260
Aluminium, cast aluminium alloys < 10% Si	< 600 N/mm²	55	90	0,140	0,180	0,220
Aluminium, cast aluminium alloys > 10% Si	< 600 N/mm²	25	70	0,140	0,180	0,220
Magnesium, magnesium alloys	< 280 N/mm²	110	200	0,180	0,220	0,260
Copper, low-alloyed	< 350 N/mm²	55	90	0,140	0,180	0,220
Brass, short-chipping	< 600 N/mm²	110	175	0,180	0,200	0,240
Brass, long-chipping	< 600 N/mm²	70	110	0,180	0,200	0,240
Bronze, short-chipping	< 600 N/mm²	110	175	0,180	0,200	0,240
Bronze, short-chipping	650–850 N/mm²	110	175	0,180	0,200	0,240
Bronze, long-chipping	< 850 N/mm²	70	110	0,180	0,200	0,240
Bronze, long-chipping	850–1200 N/mm²	70	110	0,180	0,200	0,240
Graphite		35	55	0,160	0,200	0,250