The Cartridge,needle Valve, cataloged under National Stock Number 4820-01-201-8097, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-201-8097 |
| Item Name | Cartridge,needle Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| 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 |
| Reference | Meaning |
|---|---|
| SS845-1889751ASSYC | 3/2 Design control — primary reference U.S. Government activity |
| SS845-1889751 | D/9 Drawing number reference only U.S. Government activity |
| 2640-002 | D/9 Drawing number reference only U.S. Government activity |
| 73643-67X4 PIECE 7 | 5/2 Secondary reference U.S. Government activity |
| SS845-1889751AS | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4820-01-201-8097 is a Cartridge,needle Valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 8040-01-331-4397, 5930-01-347-1584. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-01-201-8097: Special Features: NICKEL COPPER ALLOY QQ-N-281 BODY;ALUMINUM BRONZE QQ-B-679 STEM;CORROSION RESISTANT STEEL HEXAGON PLUG;BUNA-N MIL-P-5516 O-RINGS;BODY OUTBOARD,0.562-18UNF-2A THD;PLUG 0.562-18UNF-2A THD;O-RINGS 0.468 IN. ID BY 0.078 IN. COUNTERSUNK;MAXIMUM WP 3000 PSI A. 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.