The Nut,plain,hexagon, cataloged under National Stock Number 5310-00-260-9503, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Bird Electronic Corporation Div Bird Electronic Corp. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-260-9503 |
| Primary Part Number | A78908 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Bird Electronic Corporation Div Bird Electronic Corp |
| Status | ACTIVE |
| Width Across Flats | 0.500 INCHES NOMINAL IN |
| Thread Series | UNF |
| Material Document and Classification | AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Nut Height | 0.609 INCHES MINIMUM AND 0.641 INCHES MAXIMUM IN |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 304 OVERALL |
| Bearing Surface Type | FLAT |
| 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 |
|---|---|
| A78908 PRIMARY | Bird Electronic Corporation Div Bird Electronic Corp (USA) |
| Reference | Meaning |
|---|---|
| RE66F613ALTDITEM8 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-260-9503 is a Nut,plain,hexagon, manufactured by Bird Electronic Corporation Div Bird Electronic Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-260-9503 has 1 manufacturer part number on file: A78908 (Bird Electronic Corporation Div Bird Electronic Corp).
Key specifications for A78908: Width Across Flats: 0.500 INCHES NOMINAL IN; Thread Series: UNF; Material Document and Classification: AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Thread Direction: RIGHT-HAND. 11 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.