β = 15° to 30°
θ = 90° to 120°
|
Nominal Size |
TPI |
Unit |
Width Across Flats |
Width Across Corners |
Thickness Hex Nut |
Minor diameter (Bore) |
||||
|
F |
G |
H |
(d) |
|||||||
|
Min. |
Max. |
Max. |
Min. |
Max. |
Min. |
Max. |
||||
|
1/4" |
0.25 |
20 UNC |
Inch |
0.438 |
0.445 |
0.510 |
0.190 |
0.200 |
0.196 |
0.207 |
|
mm |
0.110 |
0.111 |
0.128 |
0.048 |
0.050 |
0.049 |
0.052 |
|||
|
5/16" |
0.3125 |
18 UNC |
Inch |
0.518 |
0.525 |
0.610 |
0.240 |
0.250 |
0.252 |
0.265 |
|
mm |
0.130 |
0.131 |
0.153 |
0.060 |
0.063 |
0.063 |
0.066 |
|||
|
3/8" |
0.375 |
16 UNC |
Inch |
0.592 |
0.600 |
0.690 |
0.302 |
0.312 |
0.307 |
0.321 |
|
mm |
0.148 |
0.150 |
0.173 |
0.076 |
0.078 |
0.077 |
0.080 |
|||
|
7/16" |
0.4375 |
14 UNC |
Inch |
0.702 |
0.710 |
0.820 |
0.365 |
0.375 |
0.360 |
0.376 |
|
mm |
0.176 |
0.178 |
0.205 |
0.091 |
0.094 |
0.090 |
0.094 |
|||
|
1/2" |
0.5 |
13 UNC |
Inch |
0.812 |
0.820 |
0.950 |
0.427 |
0.437 |
0.417 |
0.434 |
|
mm |
0.203 |
0.205 |
0.238 |
0.107 |
0.109 |
0.104 |
0.109 |
|||
|
9/16" |
0.5625 |
12 UNC |
Inch |
0.912 |
0.920 |
1.060 |
0.490 |
0.500 |
0.472 |
0.490 |
|
mm |
0.228 |
0.230 |
0.265 |
0.123 |
0.125 |
0.118 |
0.123 |
|||
|
5/8" |
0.625 |
11 UNC |
Inch |
1.000 |
1.010 |
1.170 |
0.552 |
0.562 |
0.527 |
0.546 |
|
mm |
0.250 |
0.253 |
0.293 |
0.138 |
0.141 |
0.132 |
0.137 |
|||
|
3/4" |
0.75 |
10 UNC |
Inch |
1.900 |
1.190 |
1.390 |
0.677 |
0.687 |
0.642 |
0.663 |
|
mm |
0.475 |
0.298 |
0.348 |
0.169 |
0.172 |
0.161 |
0.166 |
|||
|
7/8" |
0.875 |
9 UNC |
Inch |
1.288 |
1.288 |
1.500 |
0.740 |
0.750 |
0.755 |
0.778 |
|
mm |
0.322 |
0.322 |
0.375 |
0.185 |
0.188 |
0.189 |
0.195 |
|||
|
1" |
1 |
8UNC |
Inch |
1.468 |
1.468 |
1.710 |
0.865 |
0.875 |
0.865 |
0.890 |
|
mm |
0.367 |
0.367 |
0.428 |
0.216 |
0.219 |
0.216 |
0.223 |
|||
|
1.1/8" |
1.125 |
8UN |
Inch |
1.640 |
1.640 |
1.930 |
0.990 |
1.000 |
0.990 |
1.015 |
|
mm |
0.410 |
0.410 |
0.483 |
0.248 |
0.250 |
0.248 |
0.254 |
|||
|
1.1/4" |
1.25 |
8UN |
Inch |
1.815 |
1.815 |
2.150 |
1.105 |
1.125 |
1.115 |
1.140 |
|
mm |
0.454 |
0.454 |
0.538 |
0.276 |
0.281 |
0.279 |
0.285 |
|||
|
1.3/8" |
1.375 |
8UN |
Inch |
2.005 |
2.005 |
2.370 |
1.230 |
1.250 |
1.240 |
1.265 |
|
mm |
0.501 |
0.501 |
0.593 |
0.308 |
0.313 |
0.310 |
0.316 |
|||
|
1.1/2" |
1.5 |
8UN |
Inch |
2.175 |
2.175 |
2.560 |
1.335 |
1.375 |
1.365 |
1.390 |
|
mm |
0.544 |
0.544 |
0.640 |
0.334 |
0.344 |
0.341 |
0.348 |
|||
|
1.3/4" |
1.75 |
8UN |
Inch |
2.520 |
2.520 |
2.980 |
1.605 |
1.625 |
1.615 |
1.640 |
|
mm |
0.630 |
0.630 |
0.745 |
0.401 |
0.406 |
0.404 |
0.410 |
|||
|
2" |
2 |
8UN |
Inch |
2.700 |
2.700 |
3.190 |
1.730 |
1.750 |
1.865 |
1.890 |
|
mm |
0.675 |
0.675 |
0.798 |
0.433 |
0.438 |
0.466 |
0.473 |
|||