The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-563-5803, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Hme, Inc. Dba Hme Ahrens-Fox. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-563-5803 |
| Primary Part Number | 81408000 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Hme, Inc. Dba Hme Ahrens-Fox |
| Status | ACTIVE |
| Width Across Flats | 0.675 INCHES MINIMUM AND 0.688 INCHES MAXIMUM IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Hole Configuration Style | CONFIGURATION B |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.438 INCHES IN |
| Nut Height | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Nut Style | HEXAGON |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 14 |
| 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 |
|---|---|
| 2AD789 | Oshkosh Defense Llc (USA) |
| 81408000 PRIMARY | Hme, Inc. Dba Hme Ahrens-Fox (USA) |
| Reference | Meaning |
|---|---|
| 2AD789 | 5/9 Secondary reference Oshkosh Corp |
| 81408 | D/9 Drawing number reference only Hme, Inc. Dba Hme Ahrens-Fox |
| 1KK908 | C/1 Advisory reference — outside the item-of-supply concept Oshkosh Corp |
NSN 5310-01-563-5803 is a Nut,plain,hexagon, manufactured by Hme, Inc. Dba Hme Ahrens-Fox, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-563-5803 has 2 manufacturer part numbers on file: 2AD789 (Oshkosh Defense Llc), 81408000 (Hme, Inc. Dba Hme Ahrens-Fox).
Key specifications for 81408000: Width Across Flats: 0.675 INCHES MINIMUM AND 0.688 INCHES MAXIMUM IN; Thread Series: UNIFIED NATIONAL COARSE (UNC); Hole Configuration Style: CONFIGURATION B; Thread Direction: RIGHT-HAND. 9 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.