The Cock,drain, cataloged under National Stock Number 4820-00-126-9102, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Baykar Piaggio Aerospace S.p.a.. Government technical data includes 7 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-126-9102 |
| Primary Part Number | 2-300-325-01 |
| Item Name | Cock,drain |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Baykar Piaggio Aerospace S.p.a. |
| Status | ACTIVE |
| Flow Control Device | PLUG |
| Style Designator | STRAIGHT THRU |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 0.562 INCHES FIRST END IN |
| Thread Class | 3A FIRST END A |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END |
| 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 |
|---|---|
| 2-300-325-01 | Baykar Piaggio Aerospace S.p.a. (ITA) |
| Reference | Meaning |
|---|---|
| 2-300-325-01 | 5/2 Secondary reference U.S. Government activity |
| A161A | 3/2 Design control — primary reference U.S. Government activity |
| 2-300-325 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 4820-00-126-9102 is a Cock,drain, manufactured by Baykar Piaggio Aerospace S.p.a., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-126-9102 has 1 manufacturer part number on file: 2-300-325-01 (Baykar Piaggio Aerospace S.p.a.).
1 possible match (shared part number, not a government interchangeability claim): 5915-01-282-0031. Verify interchangeability with system specifications before substitution.
Key specifications for 2-300-325-01: Flow Control Device: PLUG; Style Designator: STRAIGHT THRU; Thread Direction: RIGHT-HAND FIRST END; Nominal Thread Size: 0.562 INCHES FIRST END IN. 7 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.