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8
PRO 60 (110) HP / HPP 700/1.5
Circular holes using circular punches with imperial sizes
Ø
[’’]
Decimal
equivale
nt
Maximum plate thickness
S235JR mild steel
R
m
< 490 MPa
(70,000 psi)
355J2 G3 hard steel
R
m
= 490–630 MPa
(70,000–90,000 psi)
stainless steel
R
m
= 630–750 MPa
(90,000–110,000 psi)
mm
Inch equivalent
mm
Inch equivalent
mm
Inch equivalent
Decim.
Fract.
Decim.
Fract.
Decim.
Fract.
PRO 60 HP
5/16
0.3125
6.4
0.252
1/4
4.0
0.157
5/32
3.2
0.126
1/8
3/8
0.3750
8.0
0.315
5/16
5.0
0.197
13/64
4.0
0.157
5/32
7/16
0.4375
8.8
0.346
11/32
5.5
0.217
7/32
4.4
0.173
11/64
1/2
0.5000
10.4
0.409
13/32
6.5
0.256
1/4
5.2
0.205
13/64
9/16
0.5625
11.2
0.441
7/16
7.0
0.276
9/32
6.0
0.236
15/64
5/8
0.6250
12.8
0.504
1/2
8.0
0.315
5/16
6.0
0.236
15/64
11/16
0.6875
13.0
0.512
33/64
9.0
0.354
23/64
6.0
0.236
15/64
3/4
0.7500
13.0
0.512
33/64
9.5
0.374
3/8
6.0
0.236
15/64
13/16
0.8125
13.0
0.512
33/64
10.5
0.413
13/32
5.0
0.197
13/64
7/8
0.8750
13.0
0.512
33/64
10.3
0.406
13/32
5.0
0.197
13/64
15/16
0.9375
11.9
0.469
15/32
9.5
0.374
3/8
4.0
0.157
5/32
1
1.0000
11.0
0.433
7/16
8.7
0.343
11/32
4.0
0.157
5/32
1-1/16
1.0625
10.6
0.417
27/64
8.4
0.331
21/64
4.0
0.157
5/32
PRO 110 HP
5/16
0.3125
6.4
0.252
1/4
4.0
0.157
5/32
3.2
0.126
1/8
3/8
0.3750
8.0
0.315
5/16
5.0
0.197
13/64
4.0
0.157
5/32
7/16
0.4375
8.8
0.346
11/32
5.5
0.217
7/32
4.4
0.173
11/64
1/2
0.5000
10.4
0.409
13/32
6.5
0.256
1/4
5.2
0.205
13/64
9/16
0.5625
11.2
0.441
7/16
7.0
0.276
9/32
6.0
0.236
15/64
5/8
0.6250
12.8
0.504
1/2
8.0
0.315
5/16
6.0
0.236
15/64
11/16
0.6875
14.4
0.567
9/16
9.0
0.354
23/64
6.0
0.236
15/64
3/4
0.7500
15.2
0.598
19/32
9.5
0.374
3/8
6.0
0.236
15/64
13/16
0.8125
16.0
0.630
5/8
10.5
0.413
13/32
6.0
0.236
15/64
7/8
0.8750
16.0
0.630
5/8
11.0
0.433
7/16
6.0
0.236
15/64
15/16
0.9375
16.0
0.630
5/8
12.0
0.472
15/32
6.0
0.236
15/64
1
1.0000
15.1
0.594
19/32
12.0
0.472
15/32
6.0
0.236
15/64
1-1/16
1.0625
14.5
0.571
37/64
11.5
0.453
29/64
6.0
0.236
15/64
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7
GENERAL INFORMATION