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AN340-5
Aeronautical Standard Nut
Description
AN 340-5 Hexagon Machine Screw Nut
Specifications
| Bearing Surface Type | Chamfered or washer faced |
|---|---|
| Finish | Cadmium ll |
| Hexagon Size - Across Flats | 5/16 |
| Hexagon Size - Thick | 7/64 |
| Material | Steel |
| Nut Height | 0.102 inches minimum and 0.114 inches maximum |
| Nut Style | Hexagon |
| Size | 5-40 |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Qq-p-416,ty 1,cl 3 fed spec single treatment response |
| Thread Class | 2b |
| Thread Direction | Right-hand |
| Thread Qty | 40 |
| Thread Qty Per Inch (tpi) | 40 |
| Thread Series | UNC |
| Thread Size | 0.125 |
| Width Across Flats | 0.302 inches minimum and 0.313 inches maximum |
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 AN340-5. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error