The Washer,flat, cataloged under National Stock Number 5310-01-259-7779, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Corp. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-259-7779 |
| Primary Part Number | 863T2100052-024 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Lockheed Martin Corp |
| Status | ACTIVE |
| 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 |
|---|---|
| 863T2100052-024 PRIMARY | Lockheed Martin Corp (USA) |
| Reference | Meaning |
|---|---|
| 863T2100052-024 | 5/9 Secondary reference Lockheed Martin Corp |
| 863T2100052 | D/9 Drawing number reference only Lockheed Martin Corp |
| 863T2100052 | D/9 Drawing number reference only Lockheed Martin Corp |
NSN 5310-01-259-7779 is a Washer,flat, manufactured by Lockheed Martin Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-259-7779 has 1 manufacturer part number on file: 863T2100052-024 (Lockheed Martin Corp).
5 possible matches (shared part number, not a government interchangeability claim): 5340-01-259-8363, 5340-01-259-8364, 5340-01-259-8411. Verify interchangeability with system specifications before substitution.
Key specifications for 863T2100052-024: Special Features: USED ON PEACEKEEPER T&H. 0 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.