The Poppet Assembly, cataloged under National Stock Number 4820-01-012-2142, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-012-2142 |
| Item Name | Poppet Assembly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| General Characteristics Item Description | BRASS BODY W/CRES END PLATE AND INTERNAL STEM,ONE END THD EXTERNAL 1.000-20 UNEF RH,0.950 IN. THD LG,1.738 IN. LARGEST BODY DIA,2.688 IN. O/A LG IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 18286 | 3/2 Design control — primary reference U.S. Government activity |
| P37-433-1 PIECE 21 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-012-2142 is a Poppet Assembly, classified under FSC 4820, Valves, Nonpowered. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 5305-01-084-5350, 1385-01-573-7311, 1005-01-676-0241. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-01-012-2142: General Characteristics Item Description: BRASS BODY W/CRES END PLATE AND INTERNAL STEM,ONE END THD EXTERNAL 1.000-20 UNEF RH,0.950 IN. THD LG,1.738 IN. LARGEST BODY DIA,2.688 IN. O/A LG 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.