The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-347-8255, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Safran Electrical Components Usa, Inc Div Safran Electrical Components Usa. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-347-8255 |
| Primary Part Number | AC03AX0728AA |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Safran Electrical Components Usa, Inc Div Safran Electrical Components Usa |
| Status | ACTIVE |
| Width Across Flats | 0.625 INCHES NOMINAL IN |
| Thread Series | UNEF |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.438 INCHES IN |
| Nut Height | 0.200 INCHES NOMINAL IN |
| Nut Style | HEXAGON |
| Thread Quantity Per Inch | 28 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| AC03AX0728AA PRIMARY | Safran Electrical Components Usa, Inc Div Safran Electrical Components Usa (USA) |
| Reference | Meaning |
|---|---|
| 990016-641 | 5/9 Secondary reference Watkins-Johnson Co |
| A003AX0728AA | C/1 Advisory reference — outside the item-of-supply concept Safran Electrical Components Usa, Inc Div Safran Electrical Components Usa |
NSN 5310-01-347-8255 is a Nut,self-Locking,hexagon, manufactured by Safran Electrical Components Usa, Inc Div Safran Electrical Components Usa, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-347-8255 has 1 manufacturer part number on file: AC03AX0728AA (Safran Electrical Components Usa, Inc Div Safran Electrical Components Usa).
Key specifications for AC03AX0728AA: Width Across Flats: 0.625 INCHES NOMINAL IN; Thread Series: UNEF; Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.438 INCHES IN. 7 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.