|
Counterbored Holes for Socket-Head
Cap Screws (USA)
SCREW
DIA |
A
COUNTERBORE
DIA |
B
COUNTERBORE
DEPTH |
C
COUNTERSINK
DIA |
D
CLEARANCE DIA |
| NORMAL FIT |
CLOSE FIT |
| #0 |
1/8 |
.060 |
.074 |
#49 |
#51 |
| #2 |
3/16 |
.086 |
.102 |
#36 |
3/32 |
| #4 |
7/32 |
.112 |
.130 |
#29 |
1/8 |
| #5 |
1/4 |
.125 |
.145 |
#23 |
9/64 |
| #6 |
9/32 |
.138 |
.158 |
#18 |
#23 |
| #8 |
5/16 |
.164 |
.188 |
#10 |
#15 |
| #10 |
3/8 |
.190 |
.218 |
#2 |
#5 |
| 1/4 |
7/16 |
.250 |
.278 |
9/32 |
17/64 |
| 5/16 |
17/32 |
.312 |
.346 |
11/32 |
21/64 |
| 3/8 |
5/8 |
.375 |
.415 |
13/32 |
25/64 |
| 7/16 |
23/32 |
.438 |
.483 |
15/32 |
29/64 |
| 1/2 |
13/16 |
.500 |
.552 |
17/32 |
33/64 |
| 5/8 |
1 |
.625 |
.689 |
21/32 |
41/64 |
| 3/4 |
1-3/16 |
.750 |
.828 |
25/32 |
49/64 |
| 7/8 |
1-3/8 |
.875 |
.963 |
29/32 |
57/64 |
| 1 |
1-5/8 |
1.000 |
1.100 |
1-1/32 |
1-1/64 |
| 1-1/4 |
2 |
1.250 |
1.370 |
1-5/16 |
1-9/32 |
| 1-1/2 |
2-3/8 |
1.500 |
1.640 |
1-9/16 |
1-17/32 |
| 1-3/4 |
2-3/4 |
1.750 |
1.910 |
1-13/16 |
1-25/32 |
| 2 |
3-1/8 |
2.000 |
2.180 |
2-1/16 |
2-1/32 |
|
