Nominal Size or Basic Screw Diameter | Head Diameter |
Head Height | Protrusion Gage Diameter | Protrusion | Hexagon Socket Size | Key Engagement | Fillet Transition Diameter | Length, Overall | |||
Theo. Sharp Max | Abs. Min | Ref | Max | Min | Max | Min | Nom | Min | Max | ||
3/4 (0.7500) | 1.438 | 1.355 | 0.396 | 1.186 | 1.185 | 0.136 | 0.121 | 1/2 (0.500) | 0.220 | 0.780 | 1-1/4 |
SEE NOTES 1 | 3 | 4 | 5 | 5 | 18 | 13 | 6, 7, 8 |
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/.