The Stem,fluid Valve, cataloged under National Stock Number 4820-01-535-0039, 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 9 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-535-0039 |
| Primary Part Number | 845-7285244 ITEM 41C1 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS AND REQUIRES CLEANING, PACKING, AND MARKING IAW MIL-STD-1330 |
| 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 |
|---|---|
| 845-7285244 ITEM 41C1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 7383858-264340501-0041C1 | Naval Inventory Control Point Mechanicsburg (USA) |
| H547-0001-264340501-0041C1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 264340501-41C1 | Naval Inventory Control Point Mechanicsburg (USA) |
| H547-0001-264340501-41C1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 7383858-264340501-41C1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 2643-405-01 ITEM41C1 | Naval Inventory Control Point Mechanicsburg (USA) |
| G547-0002-264340501-41C1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 7550478-264340501-41C1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 7383858-264340501-41 | 3/1 Design control — primary reference Naval Sea Systems Command |
| 7383858-264340501-0041 | 5/1 Secondary reference Naval Sea Systems Command |
| 845-7285244 ITEM 41 | 5/1 Secondary reference Naval Sea Systems Command |
| G547-0002-264340501-41 | 5/1 Secondary reference U.S. Government activity |
| H547-0001-264340501-41 | 5/1 Secondary reference U.S. Government activity |
| 2643-405-01 ITEM 41 | 5/1 Secondary reference U.S. Government activity |
| 7550478-264340501-41 | 5/1 Secondary reference Naval Sea Systems Command |
| 264340501-41 | 5/1 Secondary reference U.S. Government activity |
| H547-0001-264340501-0041 | 5/1 Secondary reference U.S. Government activity |
NSN 4820-01-535-0039 is a Stem,fluid Valve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-535-0039 has 9 manufacturer part numbers on file: 845-7285244 ITEM 41C1 (Naval Inventory Control Point Mechanicsburg), 7383858-264340501-0041C1 (Naval Inventory Control Point Mechanicsburg), H547-0001-264340501-0041C1 (Naval Inventory Control Point Mechanicsburg), 264340501-41C1 (Naval Inventory Control Point Mechanicsburg), H547-0001-264340501-41C1 (Naval Inventory Control Point Mechanicsburg) and 4 more.
1 possible match (shared part number, not a government interchangeability claim): 4820-01-544-3430. Verify interchangeability with system specifications before substitution.
Key specifications for 845-7285244 ITEM 41C1: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS AND REQUIRES CLEANING, PACKING, AND MARKING IAW MIL-STD-1330. 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.