National Aerospace Standards - Self-Locking Nut - NAS1805-4
Standard Part
Description: Self-Locking Nut
Part Number: NAS1805-4
Alternate Part Numbers: 10437621, BACN11Z4CK, H95-4
Product Overview
A nut having 12 drive points, 24 sides, and an integral washer that extends beyond the points or periphery. An integral feature is incorporated for locking on the threads of a mating member.
Item Specification
| Thread Class | 3B | |
| Thread Direction | Right-hand | |
| Locking Feature | Prevailing torque all metal design | |
| Washer Outside Diameter | 0.434 inches maximum | |
| Lubrication | Dry film lubricant | |
| Overall Height | 0.250 inches maximum | |
| Nut Style | Double hexagon | |
| Washer Thickness | 0.020 inches nominal | |
| Width Across Flats | 0.305 inches minimum and 0.313 inches maximum | |
| Temp Rating | 450.0 deg fahrenheit maximum | |
| Thread Series | UNJF | |
| Thread Quantity per Inch | 28 | |
| Nominal Thread Size | 0.250 inches | |
| Material | Iron alloy 660 overall | |
| Material Document and Classification | Ams 5731 assn std single material response overall | |
| Surface Treatment | Passivate overall | |
| Surface Treatment Document and Classification | QQ-P-35 fed spec single treatment response overall | |
| Specification/Standard Data | 80205-NAS1805 professional/industrial association standard |
| Additional info | |
|---|---|
| Colors | Chrome |
| Dimensions | |
|---|---|
| Dimensions (W x H x D) | 4.00" x 5.70" x 0.30" inches |
| Length | 5.70" inches |
| Weight | 0.02 lb |
| Specifications | |
|---|---|
| 8130-3 Eligible | No |
| ATA Chapter | 51 ATA Standard Practices and Structures |
| Available Conditions | NE / NS |
| Cage Code | 80205 |
| Country of origin | United States of America |
| ECCN / USML | EAR99 |
| FAA Approval Code | STD |
| Hazmat Code | Not Applicable |
| Hazmat(Y/N) | N |
| Material | Iron alloy 660 overall |
| NSN | 5310-01-196-0241 |
| Schedule B | 7318.16.0000 |
| Thread | 3B |
| Total Shelf Life (days) | Not Applicable |
| Type | Nut |
| Units of Measure (UoM) | Each |
| Brand | National Aerospace Standard. |
| Color | Chrome |
| Condition status | Depreciated |
