The Washer,flat, cataloged under National Stock Number 5310-01-534-1690, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Bae Systems Land & Armaments L.p.. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-534-1690 |
| Primary Part Number | 5320000053-00 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Bae Systems Land & Armaments L.p. |
| 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 |
|---|---|
| 5320000053-00 PRIMARY | Bae Systems Land & Armaments L.p. (USA) |
| Reference | Meaning |
|---|---|
| 5320000053-00 | 3/9 Design control — primary reference Bae Systems Survivability Systems Llc |
NSN 5310-01-534-1690 is a Washer,flat, manufactured by Bae Systems Land & Armaments L.p., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-534-1690 has 1 manufacturer part number on file: 5320000053-00 (Bae Systems Land & Armaments L.p.).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-578-5685. Verify interchangeability with system specifications before substitution.
Key specifications for 5320000053-00: Special Features: FLAT WASHER, COATED, 1/2 IN X 27 X 3 IN; Part Name Assigned by Controlling Agency: FLAT WASHER, COATED, 1/2 IN X 27 X 3 WASHER, FLAT IN; End Item Identification: 2320-01-465-2174 MK23, 2320-01-465-2176 MK25, PART OF ARMOR KIT. 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.