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ASME B18.6.2 SLOTTED FLAT COUNTERSUNK HEAD CAP SCREWS
DIMENSIONS OF SLOTTED FLAT COUNTERSUNK HEAD CAP SCREWS
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Nominal Size [Note 1111 or Basic Screw Diameter |
Body Diameter, E |
Head Diameter,A |
Head Height, H [Note (2)] |
Slot Width,J |
Slot Depth,T |
Fillet Radius,U |
Protrusion Above Gaging D.iameter, F [Note (3)] |
Gaging Diameter,G [Note (3)] |
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Max. |
Min. |
Max.,Edge Sharp |
Min.,Edge Rounded or Flat |
Ref. |
Max. |
Min. |
Max. |
Min. |
Max. |
Max. |
Min. |
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1/4 |
0.2500 |
0.25 |
0.2450 |
0.500 |
0.452 |
0.140 |
0.075 |
0.064 |
0.068 |
0.045 |
0.100 |
0.046 |
0.030 |
0.420 |
5/16 |
0.3125 |
0.3125 |
0.3070 |
0.625 |
0.567 |
0.177 |
0.084 |
0.072 |
0.086 |
0.057 |
0.125 |
0.053 |
0.035 |
0.538 |
3/8 |
0.3750 |
0.375 |
0.3690 |
0.750 |
0.682 |
0.210 |
0.094 |
0.081 |
0.103 |
0.068 |
0.150 |
0.060 |
0.040 |
0.651 |
7/16 |
0.4375 |
0.4375 |
0.4310 |
0.812 |
0.736 |
0.210 |
0.094 |
0.081 |
0.103 |
0.068 |
0.175 |
0.065 |
0.044 |
0.703 |
1/2 |
0.500O |
0.5000 |
0.4930 |
0.875 |
0.791 |
0.210 |
0.106 |
0.091 |
0.103 |
0.068 |
0.200 |
0.071 |
0.049 |
0.756 |
9/16 |
0.5625 |
0.5625 |
0.5550 |
1.000 |
0.906 |
0.244 |
0.118 |
0.102 |
0.120 |
0.080 |
0.225 |
0.078 |
0.054 |
0.869 |
5/8 |
0.6250 |
0.6250 |
0.6170 |
1.125 |
1.020 |
0.281 |
0.133 |
0.116 |
0.137 |
0.091 |
0.250 |
0.085 |
0.058 |
0.982 |
3/4 |
0.7500 |
0.7500 |
0.7420 |
1.375 |
1.251 |
0.352 |
0.149 |
0.131 |
0.171 |
0.115 |
0.300 |
0.099 |
0.068 |
1.208 |
7/8 |
0.8750 |
0.8750 |
0.8660 |
1.625 |
1.480 |
0.423 |
0.167 |
0.147 |
0.206 |
0.138 |
0.350 |
0.113 |
0.077 |
1.435 |
1 |
1.0000 |
1.0000 |
0.9900 |
1.875 |
1.711 |
0.494 |
0.188 |
0.166 |
0.240 |
0.162 |
0.400 |
0.127 |
0.087 |
1.661 |
1 1/8 |
1.1250 |
1.1250 |
1.1140 |
2.062 |
1.880 |
0.529 |
0.196 |
0.178 |
0.257 |
0.173 |
0.450 |
0.141 |
0.096 |
1.826 |
1 1/4 |
1.2500 |
1.2500 |
1.2390 |
2.312 |
2.110 |
0.600 |
0.211 |
0.193 |
0.291 |
0.197 |
0.500 |
0.155 |
0.105 |
2.052 |
1 3/8 |
1.3750 |
1.3750 |
1.3630 |
2.562 |
2.340 |
0.665 |
0.226 |
0.208 |
0.326 |
0.220 |
0.550 |
0.169 |
0.115 |
2.279 |
1/ 1/2 |
1.5000 |
1.5000 |
1.4880 |
2.812 |
2.570 |
0.742 |
0.258 |
0.240 |
0.360 |
0.244 |
0.600 |
0.183 |
0.124 |
2.505 |
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