The Stem,valve,check, cataloged under National Stock Number 4820-00-674-4958, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-674-4958 |
| Primary Part Number | 357934 |
| Item Name | Stem,valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| General Characteristics Item Description | STAINLESS STEEL,0.860 IN. LG,0.186 IN. DIA OF STE,0.500 IN. DIA OF HD,0.160 IN. HEIGHT OF HD IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4820-00-674-4958 is a Stem,valve,check, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-674-4958 has 3 manufacturer part numbers on file: 357934 (Newell Window Furnishings Co), 357934 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 357934 (Kito Mfg Co. Ltd).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-681-3831. Verify interchangeability with system specifications before substitution.
Key specifications for 357934: General Characteristics Item Description: STAINLESS STEEL,0.860 IN. LG,0.186 IN. DIA OF STE,0.500 IN. DIA OF HD,0.160 IN. HEIGHT OF HD IN. 1 specification is 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.