The Piston,dashpot, cataloged under National Stock Number 5342-01-490-7643, is classified within Federal Supply Class 5342 (Hardware, Weapon System) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Piston,dashpot |
| FSC / FSG | 5342 — Hardware, Weapon System (FSG 53) |
| Manufacturers | Naval Sea Systems Command (CAGE 53711) |
| Parameter | Value |
|---|---|
| NSN | 5342-01-490-7643 |
| Primary Part Number | 566-6985434-8 |
| Item Name | Piston,dashpot |
| FSC / FSG | 5342 / 53 — Hardware, Weapon System |
| Manufacturer | Naval Sea Systems Command |
| 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 |
|---|---|
| 566-6985434-8 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| H623-0507-8 | 5/2 Secondary reference U.S. Government activity |
| 566-6985434 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 5342-01-490-7643 is a Piston,dashpot, manufactured by Naval Sea Systems Command, classified under FSC 5342, Hardware, Weapon System. Status: active.
NSN 5342-01-490-7643 has 1 manufacturer part number on file: 566-6985434-8 (Naval Sea Systems Command).
4 possible matches (shared part number, not a government interchangeability claim): 4820-01-491-6489, 4820-01-491-6495, 5340-01-671-4932. Verify interchangeability with system specifications before substitution.
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.