| Extended Washer Diameter: | 0.433 inches nominal |
| Extended Washer Thickness: | 0.069 inches nominal |
| Fastener Length: | 0.860 inches nominal |
| Grip Length: | 0.375 inches nominal |
| Grip Diameter: | 0.2485 inches minimum and 0.2495 inches maximum |
| Hardness Rating: | 39.0 rockwell c minimum overall and 43.0 rockwell c maximum overall |
| Head Height: | 0.300 inches nominal |
| Head Style: | Double hexagon w/hole |
| Hole Configuration Style: | Double hexagon longitudinal hole |
| Hole Diameter: | 0.037 inches nominal |
| Hole Quantity: | 4 |
| Hole Type: | Drilled |
| Material: | Steel comp e4340 overall or steel comp 8735 overall or steel comp 8740 overall or steel comp 6150 overall or steel comp 4140 overall |
| Minimum Tensile Strength: | 180000 pounds per square inch |
| Thread Diameter: | 0.250 inches |
| Material Document And Classification: | Mil-s-5000 mil spec 1st material response overall or mil-s-6098 mil spec 2nd material response overall or mil-s-6049 mil spec 3rd material response overall or mil-s-8503 mil spec 4th material response overall or mil-s-5626 mil spec 5th material response overall |
| Specification: | 80205-nas624 professional/industrial association standard |
| Width Between Flats: | 0.306 inches minimum and 0.315 inches maximum |
| Surface Treatment Document And Classification: | Nas 672 assn std single treatment response overall |
| Surface Treatment: | Cadmium overall |
| Thread Class: | 3a |
| Thread Direction: | Right-hand |
| Thread Length: | 0.485 inches minimum |
| Thread Quantity Per Inch: | 28 |
| Thread Series: | Unf |