

| 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) | |
| 3/16 (0.188) | 0.1875 | 0.1860 | 0.2135 | 0.2105 | 1.031 | 0.844 | 4.594 | 4.406 | 0.188 | 0.022 | 342.0 | 273.00 |
| 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/.