|
Dimensions of Round Head Type U Drive Screws |
| |||||||||||
|
Nominal Screw Size |
Number of Thread Starts |
Outside Dia(D) |
Head Dia.(A) |
Head Height(H) |
Pilot Dia.(E) |
Recommended Hole Size |
||||||
|
Drill Size No. |
Hole Dia. |
|||||||||||
|
Max |
Min |
Max |
Min |
Max |
Min |
Max |
Min |
|||||
|
00 |
6 |
.060 |
.057 |
.099 |
.090 |
.034 |
.026 |
.049 |
.046 |
55 |
.052 |
|
|
0 |
6 |
.075 |
.072 |
.127 |
.118 |
.049 |
.041 |
.063 |
.060 |
51 |
.067 |
|
|
2 |
8 |
.100 |
.097 |
.162 |
.146 |
.069 |
.059 |
.083 |
.080 |
44 |
.086 |
|
|
4 |
7 |
.116 |
.112 |
.211 |
.193 |
.086 |
.075 |
.096 |
.092 |
37 |
.104 |
|
|
6 |
7 |
.140 |
.136 |
.260 |
.240 |
.103 |
.091 |
.116 |
.112 |
31 |
.120 |
|
|
7 |
8 |
.154 |
.150 |
.285 |
.264 |
.111 |
.099 |
.126 |
.122 |
29 |
.136 |
|
|
8 |
8 |
.167 |
.162 |
.309 |
.287 |
.120 |
.107 |
.136 |
.132 |
27 |
.144 |
|
|
10 |
8 |
.182 |
.177 |
.359 |
.334 |
.137 |
.123 |
.150 |
.146 |
20 |
.161 |
|
|
12 |
8 |
.212 |
.206 |
.408 |
.382 |
.153 |
.139 |
.177 |
.173 |
11 |
.191 |
|
|
14 |
9 |
.242 |
.236 |
.457 |
.429 |
.170 |
.155 |
.202 |
.198 |
2 |
.221 |
|
|
5/16 |
11 |
.315 |
.309 |
.590 |
.557 |
.216 |
.198 |
.272 |
.267 |
M |
.295 |
|
|
3/8 |
12 |
.378 |
.371 |
.708 |
.670 |
.256 |
.237 |
.334 |
.329 |
T |
.358 |
|
|
Nominal Screw Length(L) |
1/8 |
3/16 |
1/4 |
5/16 |
3/8 |
½ |
5/8 |
¾ |
1 in. and over |
|
Pilot Length(S) |
.047 |
.047 |
.047 |
.047 |
.062 |
.062 |
.078 |
.078 |
.125 |
