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NAS679C4M
0.2500-28 Thread T NAS679 Self-Locking Machine Nut
Description
0.2500-28 Thread T NAS679 Self-Locking Machine Nut
Specifications
| Bearing Surface Type | Chamfered or washer faced |
|---|---|
| Countersink Angle | 120.0 degrees |
| Features | Low Height |
| Finish | Silver Plate |
| Industry Standards/Certification | NAS679 |
| Locking Feature | Prevailing torque all metal design |
| Lubrication | Dry film lubricant |
| Material | CRES |
| Material Specification | Ams 5525 assn standard single material response |
| Maximum Dimension A | 0.219 in |
| Maximum Dimension B | 0.439 in |
| Minimum Dimension B | 0.430 in |
| Nut Height | 0.219 |
| Nut Style | Hexagon |
| Precious Material | Silver |
| Reference C | 0.506 in |
| Service Temperature | 450 ºF |
| Surface Treatment | Silver |
| Surface Treatment Specification | Ams 2410 assn standard single treatment response |
| Temperature Rating | 450.0 degrees fahrenheit |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | Unjf (fine thread with external controlled root radius) |
| Thread Size | 0.250 |
| Thread T | 0.2500-28 |
| Type | Self-Locking Nut |
| Weight | .005 lb |
| Width Across Flats | Between 0.430 inches and 0.439 inches |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
Similar parts
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Catalog data updated 2026-07-05. Report a data error