The Cock,drain, cataloged under National Stock Number 4820-01-337-2027, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Oshkosh Defense Llc. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-337-2027 |
| Primary Part Number | 1704860 |
| Item Name | Cock,drain |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Oshkosh Defense Llc |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Criticality Code Justification | FEAT |
| Operating Pressure | 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Material | COPPER ALLOY BODY |
| Valve Operation Method | MANUAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 1704860 | Oshkosh Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| 1704860 | 5/9 Secondary reference Oshkosh Corp |
| HV22-29 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-337-2027 is a Cock,drain, manufactured by Oshkosh Defense Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-337-2027 has 1 manufacturer part number on file: 1704860 (Oshkosh Defense Llc).
1 possible match (shared part number, not a government interchangeability claim): 2930-01-585-9088. Verify interchangeability with system specifications before substitution.
Key specifications for 1704860: Flow Control Device: DISK; Criticality Code Justification: FEAT; Operating Pressure: 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Special Features: INCL CAP CHAIN ASSEMBLY; WEAPON SYSTEM ESSENTIAL. 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.