The Stem,needle Valve, cataloged under National Stock Number 4820-01-041-3174, 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 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 12 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-041-3174 |
| Primary Part Number | PLC-11504 ITEM 4L1 |
| Item Name | Stem,needle Valve |
| 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 INSTRUCTIONS FOR LEVEL 1 ITEMS |
| 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 |
|---|---|
| PLC-11504 ITEM 4L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| PLC-11613ITEM4L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| PLC-11620 ITEM 4L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| PARTLIST-2601PC4L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 041413CF | 3/1 Design control — primary reference U.S. Government activity |
| PL-2437 ITEM 4 | 5/9 Secondary reference U.S. Government activity |
| PLC-11504 ITEM 4 | 5/1 Secondary reference U.S. Government activity |
| PARTLIST-2601PC4 | 5/1 Secondary reference U.S. Government activity |
| 380-3 PL-1962L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 380-3 PL-1962 | 5/1 Secondary reference U.S. Government activity |
| PLC-11620 ITEM 4 | 5/1 Secondary reference U.S. Government activity |
| PLC-11613ITEM4 | 5/1 Secondary reference U.S. Government activity |
| 041413CFL1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| PL-2437 ITEM 4L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| PL-2437 ITEM 4 | C/1 Advisory reference — outside the item-of-supply concept Triumph Engine Control Systems Llc |
NSN 4820-01-041-3174 is a Stem,needle Valve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-041-3174 has 3 manufacturer part numbers on file: PLC-11504 ITEM 4L1 (Naval Inventory Control Point Mechanicsburg), PLC-11613ITEM4L1 (Naval Inventory Control Point Mechanicsburg), PLC-11620 ITEM 4L1 (Naval Inventory Control Point Mechanicsburg).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-286-4864, 4820-01-633-0931. Verify interchangeability with system specifications before substitution.
Key specifications for PLC-11504 ITEM 4L1: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: QUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTIONS FOR LEVEL 1 ITEMS. 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.