The Piston,valve, cataloged under National Stock Number 4820-00-375-8299, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-375-8299 |
| Primary Part Number | 4824-3130079PC548412 |
| Item Name | Piston,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| 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 |
|---|---|
| 4824-3130079PC548412 PRIMARY | Naval Sea Systems Command (USA) |
| 548412 PRIMARY | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) (USA) |
| 4824-3113741REVAPC548412 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 4824-3113741REVAPC548412 | 5/9 Secondary reference U.S. Government activity |
| 548412 | 5/9 Secondary reference Allied-Signal Inc Dba Allied-Signal Aerospace Co Electrodynamics Div |
| 4824-3130079PC548412 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-00-375-8299 is a Piston,valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-375-8299 has 3 manufacturer part numbers on file: 4824-3130079PC548412 (Naval Sea Systems Command), 548412 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)), 4824-3113741REVAPC548412 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 7025-01-700-7067. Verify interchangeability with system specifications before substitution.
Key specifications for 4824-3130079PC548412: Special Features: STEEL,POLISHED OR GROUND,3.006 IN. LG O/A,@2.000 IN. HEAD DIA,0.500 IN. SHAFT DIA,1.250 IN. DIA,BY 0.375 IN. DEPTH COUNTER BORE IN HEAD,0.312 IN. W GROOVE AROUND HEAD,1.625 IN. ID OF GROOVE,TWO 0.125 IN. W GROOVES ON SHAFT,0.391 IN. @ID OF GROOVES,0.250 IN. W,BY 0.250 IN. ID GROOVE CENTERED BETWEEN FIRST TWO GROOVES IN. 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.