The Poppet and Seat Assembly, cataloged under National Stock Number 4820-01-121-0049, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-121-0049 |
| Primary Part Number | V3E10006 REV H ITEM 1L1 |
| Item Name | Poppet and Seat Assembly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| V3E10006 REV H ITEM 1L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| V3E100006 REV F ITEM 1L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| V3C10214-NN | 3/1 Design control — primary reference U.S. Government activity |
| V3E10006 REV F ITEM 1 | 5/1 Secondary reference U.S. Government activity |
| V3C10214-NNL1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| V3E10014 ITEM 1L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| V3E100006 REV F ITEM 1 | 5/1 Secondary reference U.S. Government activity |
| V3E10006 REV F ITEM 1L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
NSN 4820-01-121-0049 is a Poppet and Seat Assembly, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-121-0049 has 1 manufacturer part number on file: V3E10006 REV H ITEM 1L1 (Naval Inventory Control Point Mechanicsburg).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-121-2545. Verify interchangeability with system specifications before substitution.
Key specifications for V3E10006 REV H ITEM 1L1: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: QUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1. 2 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.