CARRIAGE BOLTS FULLY THREADED | ||||||||||||||||||
HEAD DIMENSIONS | ||||||||||||||||||
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Nominal Size or Basic Bolt Diameter | Head Diameter | Head Height | Square Width | Square Depth | ||||||||||||||
Max. | Min. | Max. | Min. | Max. | Min. | Max. | Min. | |||||||||||
10 | 0.1900 | 0.469 | 0.438 | 0.114 | 0.094 | 0.199 | 0.185 | 0.125 | 0.094 | |||||||||
1/4 | 0.2500 | 0.594 | 0.563 | 0.145 | 0.125 | 0.260 | 0.245 | 0.156 | 0.125 | |||||||||
5/16 | 0.3125 | 0.719 | 0.688 | 0.176 | 0.156 | 0.324 | 0.307 | 0.187 | 0.156 | |||||||||
3/8 | 0.3750 | 0.844 | 0.782 | 0.208 | 0.188 | 0.388 | 0.368 | 0.219 | 0.188 | |||||||||
7/16 | 0.4375 | 0.969 | 0.907 | 0.239 | 0.219 | 0.452 | 0.431 | 0.250 | 0.219 | |||||||||
1/2 | 0.5000 | 1.094 | 1.032 | 0.270 | 0.250 | 0.515 | 0.492 | 0.281 | 0.250 | |||||||||
5/8 | 0.6250 | 1.344 | 1.219 | 0.344 | 0.313 | 0.642 | 0.616 | 0.344 | 0.313 | |||||||||
3/4 | 0.7500 | 1.594 | 1.469 | 0.406 | 0.375 | 0.768 | 0.741 | 0.406 | 0.375 | |||||||||
7/8 | 0.8750 | 1.844 | 1.719 | 0.469 | 0.138 | 0.895 | 0.865 | 0.469 | 0.438 | |||||||||
1 | 1.0000 | 2.094 | 1.969 | 0.531 | 0.500 | 1.022 | 0.990 | 0.531 | 0.500 |