

| Wrench Size | Hexagon Width Across Flats | Hexagon Width Across Corners | Length of Short Arm | Length of Long Arm | Radius of Bend | Chamfer | Torsional Shear - Ave. | Torque Rating | ||||
| Max | Min | Max | Min | Max | Min | Max | Min | Min | Max | (Inch-Pounds) | (Inch Pounds) | |
| 1 (1.000) | 1.0000 | 0.9970 | 1.1470 | 1.1350 | 2.719 | 2.531 | 14.344 | 14.156 | 1.000 | 0.081 | 43500.0 | 35100.00 |
| SEE NOTES 1 | 2 | 1 | 7 | 8 | ||||||||
NOTES: |
| (1) Ends | (5) Plating |
| (2) Rounding of Corner | (6) Product Applicability |
| (3) Material | (7) Designation |
| (4) For sizes above 1" |
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/.