MS33781B
Table IV(a)(b) 100 Reduced Flush Head |
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Screw Size |
Recess and Driver Size |
w wing |
J Recess Depth |
GAGE PENET |
0 |
_ |
_ |
_ |
_ |
1 |
_ |
_ |
_ |
_ |
2 |
_ |
_ |
_ |
_ |
3 |
_ |
_ |
_ |
_ |
4 |
_ |
_ |
_ |
_ |
5 |
_ |
_ |
_ |
_ |
6 |
_ |
_ |
_ |
_ |
8 |
6 |
.182 .172 |
.066 .056 |
.0500 .0395 |
10 |
8 |
.215 .205 |
.078 .068 |
.0595 .0480 |
1/4 |
10 |
.248 .238 |
.090 .080 |
.0685 .0560 |
5/16 |
1/4 |
.325 .315 |
.118 .108 |
.0890 .0750 |
3/8 |
5/16 |
.357 .347 |
.122 .112 |
.0860 .0700 |
7/16 |
3/8 |
.427 .417 |
.145 .135 |
.1030 .0850 |
1/2 |
7/16 |
.498 .488 |
.169 .159 |
.1205 .1005 |
9/16 |
1/2 |
.568 .558 |
.193 .183 |
.1375 .1155 |
5/8 |
9/16 |
.638 .628 |
.217 .207 |
.1545 .1305 |
(a) Gage penetration is defined as the distance to which the gage, shown on Page 5, will enter the recess. (b) See MIL - STD - 1515 for aircraft usage limitations.
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