nuts › self-locking slotted hexagon nuts
MS17825-8
Castellated Nut
Description
Castellated Nut
Specifications
| Bearing Surface Type | Washer faced |
|---|---|
| Industry Standards/Certification | MIL-S-8879 |
| Locking Feature | Prevailing torque with nonmetallic insert |
| Material | Plastic |
| Maximum Dimension A | 0.578 in |
| Maximum Dimension B | 0.752 in |
| Minimum Dimension A | 0.548 in |
| Minimum Dimension B | 0.741 in |
| Minimum Dimension C | 0.837 in |
| Minimum Test Wrenching Torque | 900 in·lb |
| Minimum Ultimate Tensile Strength | 16600 lb |
| NIIN | 00-871-8758 |
| NSN | 5310-00-871-8758 |
| Nut Height | Between 0.548 inches and 0.578 inches |
| Nut Style | Hexagon slotted |
| Surface Treatment | Cadmium except insert and chromate except insert |
| Surface Treatment Specification | Class 2 federal specification single treatment response except insert type 2 qq-p-416 |
| Temperature Rating | 250.0 degrees fahrenheit |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread MIL-S-8879 | 0.5000-20 |
| Thread Qty | 20 |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series | Unjf (fine thread with external controlled root radius) |
| Thread Size | 0.500, 1/2-20 |
| Type | Self-Locking Castellated Nut |
| Weight | 0.032 lb |
| Width Across Flats | Between 0.741 inches and 0.752 inches |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
No interchangeable or dimensionally similar parts are on record for MS17825-8. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error