The Cock,drain, cataloged under National Stock Number 4820-01-393-4552, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Cdk Mobile Systems Inc. Government technical data includes 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-393-4552 |
| Primary Part Number | 8D00121-2 |
| Item Name | Cock,drain |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Cdk Mobile Systems Inc |
| Status | ACTIVE |
| Style Designator | STRAIGHT THRU |
| Media for Which Designed | AIR SINGLE RESPONSE |
| 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 | X |
| Part Number | Manufacturer |
|---|---|
| 8D00121-2 PRIMARY | Cdk Mobile Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 8D00121-2 | 5/9 Secondary reference Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba |
NSN 4820-01-393-4552 is a Cock,drain, manufactured by Cdk Mobile Systems Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-393-4552 has 1 manufacturer part number on file: 8D00121-2 (Cdk Mobile Systems Inc).
Key specifications for 8D00121-2: Style Designator: STRAIGHT THRU; Media for Which Designed: AIR SINGLE RESPONSE; End Item Identification: 2330-01-378-9997; Valve Operation Method: MANUAL. 3 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.