Conical countersink yellow/blue ring HSS bit 90° short - CNTSNK-CONI-MA-HSS-BIT-90DGR-D20,5MM

Conical countersink yellow/blue ring HSS bit 90° short - CNTSNK-CONI-MA-HSS-BIT-90DGR-D20,5MM - 1

Conical countersink yellow/blue ring HSS bit 90° short

Name: Conical countersink yellow/blue ring HSS bit 90° short
Brand: Würth
SKU: 0694025020

Conical countersink HSS bit 90° short
CNTSNK-CONI-MA-HSS-BIT-90DGR-D20,5MM
ZEBRA

Art.-no. 0694025020

EAN 4062856933204

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Conical countersink yellow/blue ring HSS bit 90° short

Art.-no. 0694025020

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Quantity

x 1 pcs

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Particularly well-suited for machining conventional steels, cast iron and non-ferrous metals (aluminium, copper, aluminium alloys and plastics) with hand-held machines.

Burr- and chatter-free countersinking and deburring

Precision tapered countersink with three cutting edges, precision-ground

Optimised geometry for hand-guided use

Less effort and improved countersinking quality and chip removal compared to conventional tapered countersinks

Standardised 1/4 inch hexagon shank

No slipping in the drill chuck, suitable for bit holders

Rapid change between countersinking and screwing possible

Product packaging made of 100 % PCR (recycled plastic from household waste), 100 % recyclable and Cradle to Cradle Certified^® Bronze

Product information

Würth Catalogue

Datasheets(X)

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Product code	0 - not applicable
Material to be processed	Non-ferrous metal, Steel
Quality	ZEBRA-Premium
Spot-facer diameter (d1)	20.5 mm
Shank diameter (d2)	1/4 in
Tip diameter (d3)	3.5 mm
Length (l1)	41 mm
Number of cutting edges (Z)	3 PCS
Cutting material	HSS
Countersink angle	90 Degree
Surface	Plain
Shank style	Hexagon
Service life (points system)	2 of 4 points
Countersinking speed (point system)	2 of 4 points
Countersinking quality (point system)	3 of 4 points
Versatility (points system)	2 of 4 points
Countersinking behaviour (point system)	3 of 4 points
Material of sub-group	General structural steels, Non-alloyed tempering steels, Alloyed tempering steels, High-speed steels, Nitriding steels, Tool steels, Cast iron, Ductile iron, Malleable cast iron, Aluminium, Aluminium wrought alloys, Aluminium alloys, White cast iron, Aluminium casting alloys (<10% silicon), Aluminium casting alloys (>10% silicon), Magnesium alloys, Copper, low-alloyed, 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

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.

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

For dia. 12.4–20.5
Material designation	Tensile strength	v_c	f
Material designation	Tensile strength	v_c	Dia. 12.4	Dia. 16.5	Dia. 20.5
General structural steels	≤ 500 N/mm²	15,8	0,020	0,020	0,020
General structural steels	≤ 1000 N/mm²	15,8	0,020	0,020	0,020
Unalloyed heat-treated steels	≤ 700 N/mm²	15,8	0,020	0,020	0,020
	≤ 850 N/mm²	15,8	0,020	0,020	0,020
	≤ 1000 N/mm²	15,8	0,020	0,020	0,020
Alloyed heat-treated steels	≤ 1000 N/mm²	13	0,020	0,015	0,015
Alloyed heat-treated steels	≤ 1400 N/mm²	13	0,020	0,015	0,015
Nitriding steels	≤ 1000 N/mm²	13	0,020	0,015	0,015
Nitriding steels	≤ 1400 N/mm²	13	0,020	0,015	0,015
Tool steels	≤ 850 N/mm²	13	0,020	0,015	0,015
Tool steels	≤ 1400 N/mm²	13	0,020	0,015	0,015
High-speed steels	≤ 1400 N/mm²	13	0,020	0,015	0,015
Cast iron	≤ 240 HB	15,8	0,020	0,020	0,020
Cast iron	≤ 350 HB	15,8	0,020	0,020	0,020
Spheroidal-graphite and malleable iron	≤ 240 HB	15,8	0,020	0,020	0,020
Spheroidal-graphite and malleable iron	≤ 350 HB	15,8	0,020	0,020	0,020
Chilled cast iron	≤ 350 HB	15,8	0,020	0,020	0,020
Aluminium and aluminium alloys	≤ 400 N/mm²	21,8	0,020	0,020	0,020
Aluminium wrought alloys	≤ 650 N/mm²	21,8	0,020	0,020	0,020
Aluminium cast alloys ≤ 10 % Si	≤ 600 N/mm²	21,8	0,020	0,020	0,020
Aluminium cast alloys > 10 % Si	≤ 600 N/mm²	21,8	0,020	0,020	0,020
Magnesium alloys	≤ 400 N/mm²	21,8	0,020	0,020	0,020
Copper, low-alloyed	≤ 500 N/mm²	21,8	0,020	0,020	0,020
Brass, short-chipping	≤ 600 N/mm²	21,8	0,020	0,020	0,020
Brass, long-chipping	≤ 600 N/mm²	21,8	0,020	0,020	0,020
Bronze, short-chipping	≤ 600 N/mm²	21,8	0,020	0,020	0,020
Bronze, short-chipping	≤ 850 N/mm²	21,8	0,020	0,020	0,020
Bronze, long-chipping	≤ 850 N/mm²	21,8	0,020	0,020	0,020
Bronze, long-chipping	≤ 1000 N/mm²	21,8	0,020	0,020	0,020
Plastics	≤ 150 N/mm²	21,8	0,020	0,020	0,020

For dia. 6.3–10.4
Material designation	Tensile strength	v_c	f
Material designation	Tensile strength	v_c	Dia. 6.3	Dia. 8.3	Dia. 10.4
General structural steels	≤ 500 N/mm²	15,8	0,025	0,025	0,025
General structural steels	≤ 1000 N/mm²	15,8	0,025	0,025	0,025
Unalloyed heat-treated steels	≤ 700 N/mm²	15,8	0,025	0,025	0,025
	≤ 850 N/mm²	15,8	0,025	0,025	0,025
	≤ 1000 N/mm²	15,8	0,025	0,025	0,025
Alloyed heat-treated steels	≤ 1000 N/mm²	13	0,020	0,020	0,020
Alloyed heat-treated steels	≤ 1400 N/mm²	13	0,020	0,020	0,020
Nitriding steels	≤ 1000 N/mm²	13	0,020	0,020	0,020
Nitriding steels	≤ 1400 N/mm²	13	0,020	0,020	0,020
Tool steels	≤ 850 N/mm²	13	0,020	0,020	0,020
Tool steels	≤ 1400 N/mm²	13	0,020	0,020	0,020
High-speed steels	≤ 1400 N/mm²	13	0,020	0,020	0,020
Cast iron	≤ 240 HB	15,8	0,025	0,025	0,025
Cast iron	≤ 350 HB	15,8	0,025	0,025	0,025
Spheroidal-graphite and malleable iron	≤ 240 HB	15,8	0,025	0,025	0,025
Spheroidal-graphite and malleable iron	≤ 350 HB	15,8	0,025	0,025	0,025
Chilled cast iron	≤ 350 HB	15,8	0,025	0,025	0,025
Aluminium and aluminium alloys	≤ 400 N/mm²	21,8	0,025	0,025	0,025
Aluminium wrought alloys	≤ 650 N/mm²	21,8	0,025	0,025	0,025
Aluminium cast alloys ≤ 10 % Si	≤ 600 N/mm²	21,8	0,025	0,025	0,025
Aluminium cast alloys > 10 % Si	≤ 600 N/mm²	21,8	0,025	0,025	0,025
Magnesium alloys	≤ 400 N/mm²	21,8	0,025	0,025	0,025
Copper, low-alloyed	≤ 500 N/mm²	21,8	0,025	0,025	0,025
Brass, short-chipping	≤ 600 N/mm²	21,8	0,025	0,025	0,025
Brass, long-chipping	≤ 600 N/mm²	21,8	0,025	0,025	0,025
Bronze, short-chipping	≤ 600 N/mm²	21,8	0,025	0,025	0,025
Bronze, short-chipping	≤ 850 N/mm²	21,8	0,025	0,025	0,025
Bronze, long-chipping	≤ 850 N/mm²	21,8	0,025	0,025	0,025
Bronze, long-chipping	≤ 1000 N/mm²	21,8	0,025	0,025	0,025
Plastics	≤ 150 N/mm²	21,8	0,025	0,025	0,025

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