Product Description: Length: 2-7/32", steel flat head screw
Product Description: Length: 2-7/32", steel flat head screw
| Thread Class | 3a |
| Thread Direction | Right-hand |
| Thread Length | 0.312 inches maximum |
| Fastener Length | 2.106 inches minimum and 2.216 inches maximum |
| Head Style | Flat chamfer |
| Head Diameter | 0.75 inches nominal |
| Head Height | 0.094 inches nominal |
| Shoulder Diameter | 0.406 inches minimum first shoulder and 0.407 inches maximum first shoulder |
| Shoulder Length | 1.794 inches minimum first shoulder and 1.804 inches maximum first shoulder |
| Shank Unthreaded Hole Diameter | 0.072 inches minimum first hole and 0.077 inches maximum first hole |
| Internal Drive Style | Slot |
| Nominal Thread Diameter | 0.250 inches |
| Thread Quantity Per Inch | 28 |
| Hardness Rating | 46.0 rockwell c minimum overall and 49.0 rockwell c maximum overall |
| Distance From Head Largest Bearing Surface To Shank Hole Center | 2.006 inches minimum first hole and 2.016 inches maximum first hole |
| Shoulder Shape | Round first shoulder |
| Iii Part Name Assigned By Controlling Agency | Navy special project |
| Special Features | Shoulder is internally relieved thru head 0.198 min 0.204 max diameter by 1.687 depth |
| Material | Steel overall |
| Material Document and Classification | 1010 fscm 26512 mfr ref single material response overall |
| Surface Treatment | Nickel overall |
| Surface Treatment Document and Classification | Qq-n-290 cl 2 fed spec single treatment response overall |
| Test Data Document | 81349-mil-i-6868 specification |
| Thread Series Designator | Unjf |
| Part Number | Manufacturer | |
|---|---|---|
| A51M42521-11 | Northrop Grumman Systems Corporation | Quote |
| A51M42521-11 | Northrop Grumman Systems Corporation | Quote |