Machine ScrewS
head dimensions
J
H
A
T
H1
M
A
G
Pan
Combo Pan
Slotted5
A
Phillips
ASME B18.6.3-2010
M
G
Recess Penetration
Gaging Depth
Max
.032
.052
.061
.071
.072
.080
.097
.113
.124
.144
.173
.213
.260
Min
.014
.034
.043
.053
.046
.055
.071
.089
.098
.118
.149
.190
.235
0
1
1
1
2
2
2
2
3
3
4
4
4
Phillips
Driver
Size
Dimensions of Recess
Diameter
Ref
.060
.097
.105
.115
.152
.159
.175
.192
.252
.274
.343
.382
.428
H
H1
J
T
P
an
H
eads for
M
acHine
s
crews and
seMs
Height of Head
Slotted
Max
.039
.053
.060
.068
.075
.082
.096
.110
.125
.144
.178
.212
.281
Min
.031
.045
.051
.058
.065
.072
.085
.099
.112
.130
.162
.195
.260
Recessed
Max
.044
.062
.071
.080
.089
.097
.115
.133
.151
.175
.218
.261
.348
Min
.036
.053
.062
.070
.079
.087
.105
.122
.139
.162
.203
.244
.325
Width of Slot
Max
.023
.031
.035
.039
.043
.048
.054
.060
.067
.075
.084
.094
.106
Min
.016
.023
.027
.031
.035
.039
.045
.050
.056
.064
.072
.081
.091
Depth of Slot
Max
.022
.031
.036
.040
.045
.050
.058
.068
.077
.087
.106
.124
.161
Min
.014
.022
.026
.030
.034
.037
.045
.053
.061
.070
.085
.100
.131
Nominal
Head Diameter
Size
Max
0
2
3
4
5
6
8
10
12
1/4
5/16
3/8
1/2
.116
.167
.193
.219
.245
.270
.322
.373
.425
.492
.615
.740
.987
Min
.104
.155
.180
.205
.231
.256
.306
.357
.407
.473
.594
.716
.958
T
G
A
H
J
N
M
Nominal
Screw
Size
4
6
8
10
12
1/4
5/16
G
H
Head Dimensions
Head
Head Height
Diameter
Max
Min
Max
Min
.219
.270
.322
.373
.425
.492
.615
.205
.256
.306
.357
.407
.473
.594
.080
.097
.115
.133
.151
.175
.218
.070
.087
.105
.122
.112
.162
.203
c
oMbination
d
rive
P
an
H
eads for
M
acHine
s
crews
J
A
Slot Dimensions
Min
Max
M
Width
Max
.039
.048
.054
.060
.067
.075
.084
.031
.039
.045
.050
.056
.064
Depth
.040
.050
.058
.068
.077
.087
.027
.033
.041
.048
.055
.063
Min
Diameter
Max
.122
.166
.182
.199
.259
.281
.109
.153
.169
.186
.246
.268
Min
Depth
Max
.078
.091
.108
.124
.141
.161
.193
T
Recess Dimensions
Min
N
Recess
Width
ASME B18.6.3-
2010
Recess
Penetration
Driver
Size
1
2
2
2
3
3
4
.060
.066
.082
.100
.115
.135
.169
.019
.028
.030
.031
.034
.036
.059
Min
.071
.080
.097
.113
.124
.144
.173
Max
.053
.055
.071
.089
.098
.118
.149
Min
70
.072
.106
.076
.350
.337
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