nuts › plain hexagon nuts
AN924-4D
AN Fitting AN924-4D Nut
Description
AN924 (Aluminum - Anodize Blue) NUT, Flared Tube, Bulkhead and Universal Fitting
Specifications
| Bearing Surface Type | Chamfered |
|---|---|
| Countersink Angle | 90.0 degrees nominal nut |
| Diameter G | 0.625 in |
| Dimension A | 0.688 in |
| Dimension A Tolerance | +0.003 in |
| Dimension B | 1/4 in |
| Dimension E | 0.771 in |
| Fitting | Universal |
| Head Type | Bulkhead |
| Industry Standards/Certification | AN924 |
| Material | Aluminum |
| Material Specification | Qq-a-225/4 fed spec 1st material response or qq-a-225/6 fed spec 2nd material response |
| NIIN | 00-159-6339 |
| NSN | 4730-00-159-6339 |
| Nut Height | 0.250 |
| Nut Style | Hexagon |
| Size No. | 4D |
| Surface Treatment | Anodize |
| Surface Treatment Specification | Mil-a-8625,type 2 mil spec single treatment response |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty | 20 |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series | UNF |
| Thread Size | 0.438, 7/16-20 |
| Thread T (Reference) | 7/16-20 |
| Tube O.D. | 1/4 |
| Tube Outside Diameter | 1/4 in |
| Weight | .005 lb |
| Width Across Flats | 0.684 inches minimum and 0.691 inches maximum |
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.
Looking for a specific part? Use the cross-reference lookup.
Catalog data updated 2026-07-05. Report a data error