
| Nominal Size or Basic Screw Diameter | Body Diameter | Head Diameter | Head Height | Head Chamfer | Hex Socket Size | Key Engagement | Wall Thickness | Edge of Head Chamfer | Grip Length | Body Length | Length | |||
| Max | Min | Max | Min | Max | Min | Max | Nom | Min | Min | Max | Max | Min | Under Head | |
| 5/8" (0.6250) | 0.6250 | 0.6163 | 0.938 | 0.921 | 0.625 | 0.616 | 0.070 | 1/2 (0.500) | 0.307 | 0.238 | 0.015 | 5.25 | 4.80 | 7 |
| SEE NOTES 1 | 2, 15 | 3 | 4 | 20 | 6 | 14 | 15 | 9 , 10 , 11 | ||||||
Reprinted from ASME/ANSI B18.3 by permission of The American Society of Mechanical Engineers. All rights reserved. For a full copy of the standards, contact the ASME at http://www.asme.org/codes/.