S O M T A P 1 2 C A T A L O G U E
69
REAMERS,
COUNTERSINKS &
COUNTERBORES
Suited Materials
Parallel Shank Counterbores
BS 328
ISO4206
DIN 373
HSS
M
774
Properties
Code
6
6.5
8
10
11
15
18
20
3.4
3.9
4.5
5.5
6.6
9
11
14
5
5
5
8
8
12.5
12.5
12.5
14
14
14
18
18
22
22
22
71
71
71
80
80
100
100
100
M3
M3.5
M4
M5
M6
M8
M10
M12
3.2
3.7
4.3
5.3
6.4
8.4
10.5
13
7740300
7740350
7740400
7740500
7740600
7740800
7741000
7741200
7740301
7740351
7740401
7740501
7740601
7740801
7741001
7741201
l
2
l
1
To Suit
Capscrew
Medium
d
2
Fine d
3
d
1
Medium Fine
Code
Parallel Shank Counterbore Set
THIS SET CONTAINS:
M5 - 7740500
M6 - 7740600
M8 - 7740800
M10 - 7741000
M12 - 7741200
7740000
774S
Description
Code
Ref No.
GENERAL
MTS Counterbores
Morse
Taper
l
1
To Suit
Capscrew
Medium
d
2
Fine
l
2
d
1
15
18
20
24
26
30
33
36
40
9
11
14
16
18
20
22
24
26
22
25
25
30
35
35
40
40
40
2
2
2
2
3
3
3
3
3
132
140
140
150
180
180
190
190
190
M8
M10
M12
M14
M16
M18
M20
M22
M24
8.4
10.5
13
15
17
19
21
23
25
7750800
7751000
7751200
7751400
7751600
7751800
7752000
7752200
7752400
7750801
7751001
7751201
7751401
7751601
7751801
7752001
7752201
7752401
Medium Fine
Code
Suited Materials
HSS
M
ISO4207
DIN 375
775
Properties
Code
MT 2 - 3
GENERAL
