Self-locking Hexagon Nut - MS21045-5
Genuine OEM Part
Description: Self-locking Hexagon Nut
Part Number: MS21045-5
Alternate Part Numbers: STD2237, AN363-524, H55-5CW, 442826, 55746, 903386C1, AN365-524C, MS20365-524C, ERN215, 853848-00, F1801-054, YE3181, 27FH-524
Product Overview
A nut having a flat bottom and 6 sides. An integral feature is incorporated for locking on the threads of a mating member. Excludes nut (1), self-locking, cap.
Item Specification
| Thread Class | 3B | |
| Thread Direction | Right-hand | |
| Locking Feature | Prevailing torque all metal design | |
| Lubrication | Soluble lubricant | |
| Nut Style | Hexagon | |
| Nut Height | 0.271 inches minimum and 0.360 inches maximum | |
| End Item Identification | Multiple launch rocket system (mlrs) | |
| Width Across Flats | 0.492 inches minimum and 0.502 inches maximum | |
| Temp Rating | 450.0 deg fahrenheit nominal | |
| Thread Series | UNJF | |
| Thread Quantity per Inch | 24 | |
| Nominal Thread Size | 0.312 inches | |
| Countersink Angle | 88.0 degrees nominal nut | |
| Bearing Surface Type | Chamfered or washer faced | |
| Bearing Surface Finish | 125.0 microinches | |
| Material | Steel overall | |
| Surface Treatment | Cadmium and chromate overall | |
| Surface Treatment Document and Classification | QQ-P-416, ty 2, cl 3 fed spec single treatment response overall |