The Tailpiece,valve, cataloged under National Stock Number 4820-01-416-5607, 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 5 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-416-5607 |
| Primary Part Number | 284060-0001 ITEM 19L1 |
| Item Name | Tailpiece,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Connection Type | THREADED EXTERNAL PIPE AND THREADED INTERNAL PIPE |
| Valve Size for Which Designed | 0.250 INCHES IN |
| Material | NICKEL ALLOY |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION 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 |
|---|---|
| 284060-0001 ITEM 19L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 187059-0001L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 284060-0003 ITEM19L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 284060-0002 ITEM 19L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 284060-0001 ITEM 19 | 5/1 Secondary reference U.S. Government activity |
| 187059-0001 | 3/1 Design control — primary reference U.S. Government activity |
| 284060-0003 ITEM19 | 5/2 Secondary reference U.S. Government activity |
| 284060-0002 ITEM 19 | 5/1 Secondary reference U.S. Government activity |
NSN 4820-01-416-5607 is a Tailpiece,valve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-416-5607 has 4 manufacturer part numbers on file: 284060-0001 ITEM 19L1 (Naval Inventory Control Point Mechanicsburg), 187059-0001L1 (Naval Inventory Control Point Mechanicsburg), 284060-0003 ITEM19L1 (Naval Inventory Control Point Mechanicsburg), 284060-0002 ITEM 19L1 (Naval Inventory Control Point Mechanicsburg).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-549-6689. Verify interchangeability with system specifications before substitution.
Key specifications for 284060-0001 ITEM 19L1: Criticality Code Justification: ZZZY; Connection Type: THREADED EXTERNAL PIPE AND THREADED INTERNAL PIPE; Valve Size for Which Designed: 0.250 INCHES IN; Material: NICKEL ALLOY. 5 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.