REAMERS,
COUNTERSINKS &
COUNTERBORES
S O M T A P 1 2 C A T A L O G U E
76
Hand Taper Pin Reamers
l
2
Code
l
1
a
Nominal
Diameter
mm
Equiv.
d
1
d
2
5/64
3/32
7/64
1/8
9/64
5/32
11/64
3/16
7/32
1/4
9/32
5/16
11/32
3/8
7/16
1/2
9/16
5/8
3/4
7/8
2.03
2.41
2.82
3.23
3.63
4.01
4.42
4.95
5.59
6.43
7.42
8.03
8.81
9.68
11.25
12.85
14.5
16.08
19.3
22.48
1.984
2.381
2.778
3.175
3.572
3.969
4.366
4.762
5.556
6.350
7.144
7.937
8.731
9.525
11.112
12.700
14.287
15.875
19.050
22.225
1.6
2
2.24
2.5
2.8
3.15
3.55
4
4.5
5
5.6
6.3
7.1
8
9
10
11.2
12.5
16
18
1.5
1.75
2.03
2.29
2.64
2.95
3.23
3.5
4.13
4.64
5.23
5.84
6.43
7.03
8.21
9.41
10.93
12.11
14.67
17.45
50.8
57.2
63.5
69.9
73.0
76.2
88.9
101.6
101.6
117.5
142.9
142.9
152.4
165.1
190.5
209.6
215.9
235
273.1
304.8
25.4
31.8
38.1
44.5
47.6
50.8
52.2
69.9
69.9
85.7
104.8
104.8
114.3
127
146.1
165.1
171.5
190.5
222.3
241.3
7320198
7320238
7320278
7320318
7320357
7320397
7320437
7320476
7320556
7320635
7320714
7320794
7320873
7320953
7321111
7321270
7321429
7321588
7321905
7322223
Suited Materials
STRAIGHT
FLUTE
INCH
HSSS
BSBS
328
732
Properties
Code
GENERAL
Hand Taper Pin Reamers
( ) Non-recommended sizes, and should be avoided whenever possible.
l
2
Code
l
1
a
d
d
4
d
3
d
2
2
2.5
3
4
5
6
8
10
12
(13)
(14)
16
20
25
3.15
3.15
4.0
5.0
6.3
8.0
10.0
12.5
14.0
15.0
16.0
18.0
22.4
28.0
1.9
2.4
2.9
3.9
4.9
5.9
7.9
9.9
11.8
12.8
13.8
15.8
19.8
24.7
2.86
3.36
4.06
5.26
6.36
8.0
10.8
13.4
16.0
17.0
18.0
20.4
24.8
30.7
48
48
58
68
73
105
145
175
210
210
210
230
250
300
68
68
80
93
100
135
180
215
255
255
255
280
310
370
2.5
2.5
3.15
4
5
6.3
8
10
11.2
11.2
12.5
14
18
22.4
7310200
7310250
7310300
7310400
7310500
7310600
7310800
7311000
7311200
7311300
7311400
7311600
7312000
7312500
Suited Materials
STRAIGHT
FLUTE
M
HSS
DIN
9
731
Properties
Code
GENERAL
