82
DEGREE FLAT HEADS |
Recessed
BASIC
SCREW
DIAMETER |
A
HEAD
DIAMETER |
H
HEAD
HEIGHT |
M
RECESS
DIAMETER |
G
RECESS
DEPTH |
N
RECESS
WIDTH |
DRIVER
SIZE |
max |
min |
ref |
max |
min |
max |
min |
min |
0 |
0.0600 |
0.119 |
0.099 |
0.035 |
0.069 |
0.056 |
0.043 |
0.027 |
0.014 |
0 |
1 |
0.0730 |
0.146 |
0.123 |
0.043 |
0.077 |
0.064 |
0.051 |
0.035 |
0.015 |
0 |
2 |
0.0860 |
0.172 |
0.147 |
0.051 |
0.102 |
0.089 |
0.063 |
0.047 |
0.017 |
1 |
3 |
0.0990 |
0.199 |
0.171 |
0.059 |
0.107 |
0.094 |
0.068 |
0.052 |
0.018 |
1 |
4 |
0.1120 |
0.225 |
0.195 |
0.067 |
0.128 |
0.115 |
0.089 |
0.073 |
0.018 |
1 |
5 |
0.1250 |
0.252 |
0.220 |
0.075 |
0.154 |
0.141 |
0.086 |
0.063 |
0.027 |
2 |
6 |
0.1380 |
0.279 |
0.244 |
0.083 |
0.174 |
0.161 |
0.106 |
0.083 |
0.029 |
2 |
8 |
0.1640 |
0.332 |
0.292 |
0.100 |
0.189 |
0.176 |
0.121 |
0.098 |
0.030 |
2 |
10 |
0.1900 |
0.385 |
0.340 |
0.116 |
0.204 |
0.191 |
0.136 |
0.113 |
0.032 |
2 |
12 |
0.2160 |
0.438 |
0.389 |
0.132 |
0.268 |
0.255 |
0.156 |
0.133 |
0.035 |
3 |
1/4 |
0.2500 |
0.507 |
0.452 |
0.153 |
0.283 |
0.270 |
0.171 |
0.148 |
0.036 |
3 |
5/16 |
0.3125 |
0.635 |
0.568 |
0.191 |
0.368 |
0.352 |
0.216 |
0.194 |
0.061 |
4 |
3/8 |
0.3750 |
0.762 |
0.685 |
0.230 |
0.393 |
0.380 |
0.246 |
0.223 |
0.065 |
4 |
7/16 |
0.4375 |
0.812 |
0.723 |
0.223 |
0.409 |
0.396 |
0.261 |
0.239 |
0.068 |
4 |
1/2 |
0.5000 |
0.875 |
0.775 |
0.223 |
0.424 |
0.411 |
0.276 |
0.254 |
0.069 |
4 |
Slotted
BASIC
SCREW
DIAMETER |
A
HEAD
DIAMETER |
H
HEAD
HEIGHT |
J
SLOT
WIDTH |
T
SLOT
DEPTH |
max |
min |
ref |
max |
min |
max |
min |
0 |
0.0600 |
0.119 |
0.099 |
0.035 |
0.023 |
0.016 |
0.015 |
0.010 |
1 |
0.0730 |
0.146 |
0.123 |
0.043 |
0.026 |
0.019 |
0.019 |
0.012 |
2 |
0.0860 |
0.172 |
0.147 |
0.051 |
0.031 |
0.023 |
0.023 |
0.015 |
3 |
0.0990 |
0.199 |
0.171 |
0.059 |
0.035 |
0.027 |
0.027 |
0.017 |
4 |
0.1120 |
0.225 |
0.195 |
0.067 |
0.039 |
0.031 |
0.030 |
0.020 |
5 |
0.1250 |
0.252 |
0.220 |
0.075 |
0.043 |
0.035 |
0.034 |
0.022 |
6 |
0.1380 |
0.279 |
0.244 |
0.083 |
0.048 |
0.039 |
0.038 |
0.024 |
8 |
0.1640 |
0.332 |
0.292 |
0.100 |
0.054 |
0.045 |
0.045 |
0.029 |
10 |
0.1900 |
0.385 |
0.340 |
0.116 |
0.060 |
0.050 |
0.053 |
0.034 |
12 |
0.2160 |
0.438 |
0.389 |
0.132 |
0.067 |
0.056 |
0.060 |
0.039 |
1/4 |
0.2500 |
0.507 |
0.452 |
0.153 |
0.075 |
0.064 |
0.070 |
0.046 |
5/16 |
0.3125 |
0.635 |
0.568 |
0.191 |
0.084 |
0.072 |
0.088 |
0.058 |
3/8 |
0.3750 |
0.762 |
0.685 |
0.230 |
0.094 |
0.081 |
0.106 |
0.070 |
7/16 |
0.4375 |
0.812 |
0.723 |
0.223 |
0.094 |
0.081 |
0.103 |
0.066 |
1/2 |
0.5000 |
0.875 |
0.775 |
0.223 |
0.106 |
0.091 |
0.103 |
0.065 |
NOTE: Shorter length
flat heads are undercut to 70% of the normal head height allowing
for greater thread length. See chart on next page to locate
lengths to be undercut. |
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20
Rancho Circle, Lake Forest, CA 92630 - Tel. 949.770.7711 Fax 949.770.0705
- info@usfastener.com |