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Countersinks
Three flutes countersinks
90° Angle
TiN coating
HSS-E Cobalt + TiN = hardness 65 HRC, to machine steels up to 1000 N/mm², cast irons up to 200HB, copper, brass, bronze, aluminium. The TiN coating = hardness 2300 HV increases the tool life for intensive use.

Nota :
Ø6,3-80mm : shank + 3 flats.
Effective holding thanks to the 3 flats.
See 4837 code.
General tolerances
TiN 4831
DIN 335-C
Angle :
90°
Material :
HSS-E Cobalt
Coating :
TiN
Serie :
right hand cut
Use :
machine use
Type :
Metric / inch
Catalog 239 :
D
mm
D
inch
d1
maxi
d2
L
Reference
€ Unit
26,0
3,8
10
67
84483126000
81,45
28,0
4,0
12
71
84483128000
81,45
28,0
4,0
Morse 2
112
84483128020
133,40
30,0
4,2
12
71
84483130000
95,20
31,0
4,2
12
71
84483131000
95,20
31
4,3
Morse 2
112
84483131020
135,85
34
4,5
Morse 2
133
84483134020
141,45
37
4,5
Morse 2
145
84483137020
170,85
40
4,5
Morse 3
160
84483140030
207,05
50
5,0
Morse 3
168
84483150030
283,30
63
10
Morse 3
182
84483163030
384,50
80
14
Morse 4
229
84483180040
707,40
125
50
Morse 4
192
84483112504
1 806,45
Articles/page 
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* Please mention the shank Ø when ordering

Sets

Designation
Composition
Reference
€ Unit
SET 4831
5 countersinks 90° TiN
Ø 10,4 - 16,5 - 20,5 - 25 - 31
84483100000
283.1
SET 4831/2
6 countersinks 90° TiN
Ø 6,3-8,3-10,4-12,4-16,5-20,5
84483100002
197.95000000000002
SET 4831/5
6 countersinks 90° TiN inches
Ø 6,35 - 7,93 - 9,52 - 12,7 - 15,87 - 19,05
84483100005
197.95000000000002
SET 4831/6
4 countersinks 90° TiN
with auto-lock chuck
Ø 6,3 -12,4 -16,5 - 20,5
with 1 auto-lock chuck 4002
84483100006
224.25