length: 1-13/32", grip: 15/16", thread: 1/4-28, cadmium plated steel, drilled shank
| Specifications | |
|---|---|
| Surface Treatment Specification | QQ-P-416 Type 2 Cl 3 Federal Specification, single treatment response |
| Surface Treatment | Cadmium and chromate |
| Shank Unthreaded Hole Diameter | 0.076 inches first hole, 0.086 inches first hole |
| Min. Tensile Strength | 125,000 psi |
| Material | Steel comp 4140, 8740, 8630, 8735, 4130, or 4037 |
| Head Style | Hexagon |
| Head Height | 0.140 inches minimum, 0.172 inches maximum |
| Grip Length | 0.922 inches minimum, 0.953 inches maximum |
| Hardness Rating | 26.0 Rockwell C minimum, 32.0 Rockwell C maximum |
| Features Provided | Finished head |
| Fastener Length | 1.391 inches minimum, 1.438 inches maximum |
| Distance From Head Largest Bearing Surface To Shank Hole Center | 1.240 inches first hole, 1.260 inches first hole |
| Thread Class | 3A |
| Thread Diameter | 0.250 inches |
| Thread Direction | Right-hand |
| Thread Length | 0.438 inches minimum, 0.516 inches maximum |
| Thread Qty Per Inch (TPI) | 28 |
| Thread Series Designator | UNF (fine thread) |
| Width Between Flats | 0.428 inches minimum, 0.440 inches maximum |
