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Counterbore DIN 373, fine

Counterbore DIN 373 fine
CNTBRE-DIN373-HSS-FINE-M8

Art.-no. 0694150008
EAN 4056807537412
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Counterbore DIN 373, fine

Art.-no. 0694150008

CNTBRE-DIN373-HSS-FINE-M8

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UNISCPR-IMPACTCAP-W50MM

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The products shown are not necessarily compatible. Please always check the articles for the respective application purpose.

For all ferrous and non-ferrous metals, hard and soft plastics. For use in through holes according to DIN 273 quality grade "fine" for single and series production. For countersinking hexagon socket screws DIN 912, 6912, 7984 and cheese head screws ISO 1207 (DIN 84).

Product code

2140

Quality grade

Fine

Material to be processed

Steel, Cast metal, Stainless steel, Copper, Brass, Aluminium, Plastic

Suitable for screw

M8

Diameter of tenon (d1)

8.4 mm

Spot-facer diameter (d2)

15.0 mm

Shank diameter (d3)

12.5 mm

Length (l1)

100 mm

Length of head (l2)

22 mm

Number of cutting edges (Z)

3 PCS

Standards

DIN 373

Cutting material

HSS

Surface

Plain

Shank style

Cylindrical

Quality

Würth-Standard

Material of sub-group

General structural steels, Non-alloyed tempering steels < 1000 N/mm², Alloyed tempering steels < 1000 N/mm², Nitriding steels < 1300 N/mm², Grey cast iron, Malleable cast iron, Stainless steels < 850 N/mm², Stainless steels > 850 N/mm², Copper, Brass, Aluminium, Plastics

Cutting values for HSS counterbores
For M3-M6
Material designation Tensile strength vc f
from to M3 M4 M5 M6
General structural steels < 500 N/mm² 26 30 0,090 0,104 0,120 0,126
500-850 N/mm² 25 28 0,080 0,093 0,100 0,105
Carbon steels < 850 N/mm² 25 28 0,080 0,093 0,100 0,105
850-1000 N/mm² 18 25 0,060 0,070 0,080 0,084
Unalloyed heat-treated steels < 700 N/mm² 25 28 0,080 0,093 0,100 0,105
700-850 N/mm² 25 28 0,080 0,093 0,100 0,105
850-1000 N/mm² 18 25 0,060 0,070 0,080 0,084
Alloyed heat-treated steels 850-1000 N/mm² 18 25 0,060 0,070 0,080 0,084
1000-1200 N/mm² 6 10 0,040 0,046 0,050 0,053
Unalloyed case-hardening steels < 750 N/mm² 25 28 0,080 0,093 0,100 0,105
Alloyed case-hardening steels < 1000 N/mm² 18 25 0,060 0,070 0,080 0,084
1000-1200 N/mm² 6 10 0,040 0,046 0,050 0,053
Nitriding steels < 1000 N/mm² 18 25 0,060 0,070 0,080 0,084
1000-1200 N/mm² 6 10 0,040 0,046 0,050 0,053
Tool steels < 850 N/mm² 18 25 0,060 0,070 0,080 0,084
850-1100 N/mm² 6 10 0,040 0,046 0,050 0,053
1100-1400 N/mm² 2 5 0,030 0,035 0,040 0,042
High-speed steels 850-1200 N/mm² 6 10 0,040 0,046 0,050 0,053
Wear-resistant constructional steel 1350 N/mm² 2 5 0,030 0,035 0,040 0,042
Spring steels < 1200 N/mm² 6 10 0,040 0,046 0,050 0,053
Stainless steels, sulphurated < 700 N/mm² 4 10 0,050 0,058 0,060 0,063
Stainless steels, austenitic < 700 N/mm² 4 10 0,050 0,058 0,060 0,063
< 850 N/mm² 4 10 0,050 0,058 0,060 0,063
Stainless steels, martensitic < 1100 N/mm² 4 10 0,050 0,058 0,060 0,063
Cast iron < 180 HB 15 24 0,100 0,116 0,120 0,126
> 180 HB 9 15 0,070 0,081 0,080 0,084
Nodular graphite, malleable iron > 180 HB 9 15 0,070 0,081 0,080 0,084
> 260 HB 9 15 0,070 0,081 0,080 0,084
Aluminium, aluminium alloys < 530 N/mm² 50 90 0,120 0,139 0,140 0,147
Aluminium, cast aluminium alloys < 10 % Si < 600 N/mm² 25 40 0,100 0,116 0,120 0,126
Magnesium, magnesium alloys < 280 N/mm² 50 90 0,120 0,139 0,140 0,147
Copper, low-alloy < 350 N/mm² 25 40 0,100 0,116 0,120 0,126
Brass, short-chipping < 600 N/mm² 50 80 0,120 0,139 0,140 0,147
Brass, long-chipping < 600 N/mm² 30 50 0,120 0,139 0,140 0,147
Bronze, short-chipping < 600 N/mm² 50 80 0,120 0,139 0,140 0,147
650-850 N/mm² 50 80 0,120 0,139 0,140 0,147
Bronze, long-chipping < 850 N/mm² 30 50 0,120 0,139 0,140 0,147
850-1200 N/mm² 30 50 0,120 0,139 0,180 0,189
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 HSS counterbores
For M8-M12
Material designation Tensile strength vc f
from to M8 M10 M12
General structural steels < 500 N/mm² 26 30 0,132 0,140 0,160
500-850 N/mm² 25 28 0,110 0,120 0,140
Carbon steels < 850 N/mm² 25 28 0,110 0,120 0,140
850-1000 N/mm² 18 25 0,088 0,100 0,120
Unalloyed heat-treated steels < 700 N/mm² 25 28 0,110 0,120 0,140
700-850 N/mm² 25 28 0,110 0,120 0,140
850-1000 N/mm² 18 25 0,088 0,100 0,120
Alloyed heat-treated steels 850-1000 N/mm² 18 25 0,088 0,100 0,120
1000-1200 N/mm² 6 10 0,055 0,090 0,080
Unalloyed case-hardening steels < 750 N/mm² 25 28 0,110 0,120 0,140
Alloyed case-hardening steels < 1000 N/mm² 18 25 0,088 0,100 0,120
1000-1200 N/mm² 6 10 0,055 0,090 0,080
Nitriding steels < 1000 N/mm² 18 25 0,088 0,100 0,120
1000-1200 N/mm² 6 10 0,055 0,090 0,080
Tool steels < 850 N/mm² 18 25 0,088 0,100 0,120
850-1100 N/mm² 6 10 0,055 0,090 0,080
1100-1400 N/mm² 2 5 0,044 0,050 0,060
High-speed steels 850-1200 N/mm² 6 10 0,055 0,090 0,080
Wear-resistant constructional steel 1350 N/mm² 2 5 0,044 0,050 0,060
Spring steels < 1200 N/mm² 6 10 0,055 0,090 0,080
Stainless steels, sulphurated < 700 N/mm² 4 10 0,066 0,070 0,080
Stainless steels, austenitic < 700 N/mm² 4 10 0,066 0,070 0,080
< 850 N/mm² 4 10 0,066 0,070 0,080
Stainless steels, martensitic < 1100 N/mm² 4 10 0,066 0,070 0,080
Cast iron < 180 HB 15 24 0,132 0,160 0,200
> 180 HB 9 15 0,088 0,120 0,160
Nodular graphite, malleable iron > 180 HB 9 15 0,088 0,120 0,160
> 260 HB 9 15 0,088 0,120 0,160
Aluminium, aluminium alloys < 530 N/mm² 50 90 0,154 0,180 0,220
Aluminium, cast aluminium alloys < 10 % Si < 600 N/mm² 25 40 0,132 0,140 0,180
Magnesium, magnesium alloys < 280 N/mm² 50 90 0,154 0,180 0,220
Copper, low-alloy < 350 N/mm² 25 40 0,132 0,140 0,180
Brass, short-chipping < 600 N/mm² 50 80 0,154 0,180 0,200
Brass, long-chipping < 600 N/mm² 30 50 0,154 0,180 0,200
Bronze, short-chipping < 600 N/mm² 50 80 0,154 0,180 0,200
650-850 N/mm² 50 80 0,154 0,180 0,200
Bronze, long-chipping < 850 N/mm² 30 50 0,154 0,180 0,200
850-1200 N/mm² 30 50 0,198 0,180 0,200

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