Military Standards - NUT - MS21045L7
Genuine OEM Part
Description: NUT, NUT SELF-LOCKING
Part number: MS21045L7
Industry Standard Specification: AIA/NAS NASM21044
Nut - 7/16-20 Thread, Self-Locking, Regular Height, Steel Nut, Cadmium Plated, With Dry-Film Lube, 450° F
MS21045L7 SPECIFICATIONS
| PARAMETER | CHARACTERISTIC | |
| Thread Class | 3B | |
| Thread Direction | Right-hand | |
| Locking Feature | Prevailing torque all metal design | |
| Lubrication | Dry film lubricant | |
| Nut Style | Hexagon | |
| Nut Height | 0.435 nominal mils and 0.469 nominal centimeters | |
| Width Across Flats | 0.679 inches minimum and 0.690 inches maximum | |
| Temp Rating | 450.0 deg fahrenheit nominal | |
| Thread Series | UNJF | |
| Thread Quantity per Inch | 20 | |
| Nominal Thread Size | 0.438 inches | |
| Countersink Angle | 88.0 degrees nominal nut | |
| Bearing Surface Type | Chamfered | |
| Bearing Surface Finish | 125.0 microinches | |
| Material | Steel overall | |
| Surface Treatment | Cadmium overall | |
| Surface Treatment Document and Classification | QQ-P-416 fed spec single treatment response overall |
This part is used on the following aircraft:
- Textron Aviation Beechcraft King Air 300 - all variants
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