nuts › plain hexagon nuts
AN340C2
Aeronautical Standard Plain Hexagon Nut
Description
Thread: 2-56, Thread Size: 1/8", Head Width: 1/8
Specifications
| Bearing Surface Type | Chamfered or washer faced |
|---|---|
| Countersink Angle | 110 degrees nut |
| Material | CRES |
| Nut Height | Between 0.057 inches and 0.066 inches |
| Nut Style | Hexagon |
| Surface Treatment | Passivate |
| Thread Class | 2b |
| Thread Direction | Right-hand |
| Thread Qty | 56 |
| Thread Qty Per Inch (tpi) | 56 |
| Thread Series | Unc (coarse thread) |
| Thread Size | 0.086 |
| Width Across Flats | Between 0.180 inches and 0.188 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.
- MS35649-222 MS #2-56 · Steel
- MS35649-224B MS #2-56 · CRES
- MS35649-225B MS #2-56 · Brass
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Catalog data updated 2026-07-05. Report a data error