The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-249-4190, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Astronautics Corporation of America. Government technical data includes 13 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-249-4190 |
| Primary Part Number | 133262 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Astronautics Corporation of America |
| Status | ACTIVE |
| Width Across Flats | 0.380 INCHES NOMINAL IN |
| Thread Series | UNF |
| Material Document and Classification | QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nut Counterbore Depth | 0.095 INCHES NOMINAL FIRST END IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Counterbore Diameter | 0.250 INCHES MINIMUM AND 0.255 INCHES MAXIMUM FIRST END IN |
| Nut Height | 0.153 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 28 |
| Material | ALUMINUM ALLOY 2024 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 |
|---|---|
| 133262 PRIMARY | Astronautics Corporation of America (USA) |
NSN 5310-01-249-4190 is a Nut,plain,hexagon, manufactured by Astronautics Corporation of America, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-249-4190 has 1 manufacturer part number on file: 133262 (Astronautics Corporation of America).
Key specifications for 133262: Width Across Flats: 0.380 INCHES NOMINAL IN; Thread Series: UNF; Material Document and Classification: QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Nut Counterbore Depth: 0.095 INCHES NOMINAL FIRST END IN. 13 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.