Description
| Specification | Details |
|---|---|
| Thread Class | 2A |
| Thread Direction | Right-hand |
| Thread Length | 1.688 inches minimum and 1.750 inches maximum |
| Fastener Length | 1.750 inches nominal |
| Head Style | Flat Countersunk |
| Head Diameter | 0.285 inches minimum and 0.332 inches maximum |
| Internal Drive Style | Cross Recess Type 1 |
| Thread Diameter | 0.164 inches |
| Thread Qty Per Inch (TPI) | 32 |
| Min. Tensile Strength (PSI) | 60,000 pounds per square inch |
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
| Screw Material | Steel Comp 1010 |
| Screw Material Specification | QQ-S-630 Fed Spec Single Material Response or QQ-S-631 Fed Spec Single Material Response or QQ-S-634 Fed Spec Single Material Response |
| Screw Surface Treatment | Cadmium and Chromate |
| Screw Surface Treatment Specification | QQ-P-416 Type P Class 3 Fed Spec All Treatment Responses |
| Thread Series Designator | UNC |
