Big-Sert Inch Engineering Data
INSERT |
DRILL |
C.BORE |
TAP | ||
|
SIZE |
DRILL
|
SIZE
|
MIN. |
MIN.
DEPTH |
MAJOR |
|
1/4-20
|
7.8mm
|
.307
|
.355
|
.050
|
.359
|
|
1/4-28
|
L
|
.290
|
.330
|
.055
|
.330
|
|
5/16-18
|
13/32
|
.406
|
.474
|
.085
|
.474
|
|
5/16-24
|
13/32
|
.406
|
.474
|
.085
|
.474
|
|
3/8-16
|
31/64
|
.484
|
.552
|
.085
|
.552
|
|
3/8-24
|
31/64
|
.484
|
.552
|
.085
|
.552
|
|
7/16-14
|
37/64
|
.578
|
.634
|
.085
|
.634
|
|
7/16-20
|
37/64
|
.578
|
.634
|
.085
|
.634
|
|
1/2-13
|
41/64
|
.640
|
.701
|
.085
|
.701
|
|
1/2-20
|
41/64
|
.640
|
.701
|
.085
|
.701 |