TM 55-607/NAVSEA OP 3221 Rev 2
Table C-6. Allowable Lateral Loads for Wood strews-- Normal Duration
Allowable lateral loads (shear) in pounds for screws embedded to approximately 7 times the shank
diameter Into the member holding the point. For less penetration, reduce loads In proportion. Penetration
should not be less than 4 times the shank diameter.
Size of screw
g=
6
7
8
9
10
12
14
16
18
20
24
(For species in
D=
0.138
0.151
0.164
0.177
0.190
0.216
0.242
0.288
0.294
0.820
0.372
each group
see fable B 3)
7D=
9.66
1.057
1.148
1.239
1.330
1.512
1.894
1.878
2.058
2.240
2.804
4D=
.552
.604
.656
.708
.760
.864
.988
1.072
1.176
1.280
1.488
Group I
=
91
109
129
150
173
224
281
345
415
492
664
Group II
=
75
90
106
124
143
185
232
284
342
406
548
Group III
=
62
74
87
101
117
151
190
233
280
332
448
Group IV
=
48
58
88
79
91
118
148
181
218
258
349
C-6
