nuts › self-locking hexagon nuts
MS21044C10
5/8-18 Thread Size MS21044 Self-Locking Machine Nut
Description
5/8-18 Thread Size MS21044 Self-Locking Machine Nut
Specifications
| Bearing Surface Finish | 125.0 microinches |
|---|---|
| Bearing Surface Type | Chamfered or washer faced |
| Counterbore Diameter | 0.636 inches nut and 0.676 inches nut |
| Countersink Angle | 88.0 degrees nut |
| Features | Nylon Insert |
| Industry Standards/Certification | MS21044 |
| Locking Feature | Prevailing torque with nonmetallic insert |
| Lubrication | Soluble lubricant |
| Material | CRES |
| Material Specification | Ams 5688 assn standard 1st material response nut or ams 5640 assn standard 2nd material response nut or ams 5647 assn standard 3rd material response nut |
| Maximum Dimension A | 0.766 in |
| Maximum Dimension B | 0.940 in |
| Minimum Dimension A | 0.732 in |
| Minimum Dimension B | 0.928 in |
| Minimum Dimension C | 1.051 in |
| Nut Height | Between 0.732 inches and 0.766 inches |
| Nut Style | Hexagon |
| Service Temperature | 250 ºF |
| Temperature Rating | 250.0 degrees fahrenheit |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread MIL-S-8879 | 0.6250-18 |
| Thread Qty Per Inch (tpi) | 18 |
| Thread Series | Unf (fine thread) |
| Thread Size | 0.625, 5/8-18 |
| Type | Self-Locking Nut |
| Weight | .005 lb |
| Width Across Flats | Between 0.928 inches and 0.940 inches |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
Similar parts
Parts with matching key dimensions — often from a different standards family. Candidates for comparison only; verify the full specification before substituting.
- MS21044-N10 MS 5/8-18 · Steel
- MS21044N10 MS 5/8-18 · Steel
- MS21045-10 MS 5/8-18 · Steel
Looking for a specific part? Use the cross-reference lookup.
Catalog data updated 2026-07-05. Report a data error