The Stem,fluid Valve, cataloged under National Stock Number 4820-01-210-2779, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Ashcroft Inc Dba Heise. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-210-2779 |
| Primary Part Number | 15998 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Ashcroft Inc Dba Heise |
| 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 |
|---|---|
| 15998 PRIMARY | Ashcroft Inc Dba Heise (USA) |
| 5VEX72 PIECE 5 | Ashcroft Inc Dba Heise (USA) |
| Reference | Meaning |
|---|---|
| 5VEX72 | D/9 Drawing number reference only Ashcroft Inc Dba Heise |
NSN 4820-01-210-2779 is a Stem,fluid Valve, manufactured by Ashcroft Inc Dba Heise, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-210-2779 has 2 manufacturer part numbers on file: 15998 (Ashcroft Inc Dba Heise), 5VEX72 PIECE 5 (Ashcroft Inc Dba Heise).
1 possible match (shared part number, not a government interchangeability claim): 6505-01-583-8954. Verify interchangeability with system specifications before substitution.
Key specifications for 15998: Special Features: NICKEL COPPER ROD; 15.938 IN. LG; 0.500 IN. DIA ONE END; 0.625 IN. DIA OTHER END 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.