The Washer,flat, cataloged under National Stock Number 5310-01-273-2288, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Corporation. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-273-2288 |
| Primary Part Number | 13082049 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Lockheed Martin Corporation |
| Status | ACTIVE |
| Overall Diameter | 1.555 INCHES MINIMUM AND 1.560 INCHES MAXIMUM IN |
| Thickness | 0.280 INCHES NOMINAL IN |
| 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 |
|---|---|
| 13082049 PRIMARY | Lockheed Martin Corporation (USA) |
| Reference | Meaning |
|---|---|
| 13082049 | 5/9 Secondary reference Program Manager Advanced Attack Helicopter Barcom Amcpm-Aah |
NSN 5310-01-273-2288 is a Washer,flat, manufactured by Lockheed Martin Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-273-2288 has 1 manufacturer part number on file: 13082049 (Lockheed Martin Corporation).
Key specifications for 13082049: Overall Diameter: 1.555 INCHES MINIMUM AND 1.560 INCHES MAXIMUM IN; Special Features: MATERIAL IS STEEL COMP 303;SURFACE TREATMENT DOC QQ-P-35;SURFACE TREATMENT PASSIVATE;MATERIAL DOCUMENT ASTM A582 COND A; Thickness: 0.280 INCHES NOMINAL IN. 2 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.