Table 10 METRIC TAP AND DRILL SIZE (continued)
Metric
Drill
Decimal
size
equivalent
fraction
Nearest fraction
5
×
0.90
No. 20
0.161
5/32
6
×
1.00
No. 9
0.196
13/64
7
×
1.00
16/64
0.234
15/64
8
×
1.00
J
0.277
9/32
8
×
1.25
17/64
0.265
17/64
9
×
1.00
5/16
0.3125
5/16
9
×
1.25
5/16
0.3125
5/16
10
×
1.25
11/32
0.3437
11/32
10
×
1.50
R
0.339
11/32
11
×
1.50
3/8
0.375
3/8
12
×
1.50
13/32
0.406
13/32
12
×
1.75
13/32
0.406
13/32
GENERAL INFORMATION
33
1