The Breather, cataloged under National Stock Number 2805-01-423-4404, is classified within Federal Supply Class 2805 (Gasoline Reciprocating Engines, Except Aircraft; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Appleton Marine Inc. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 2805-01-423-4404 |
| Primary Part Number | YMD-6399 |
| Item Name | Breather |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Appleton Marine Inc |
| Status | ACTIVE |
| Connection Type | THREADED |
| Body Material | PLASTIC |
| Thread Size and Series/type Designator | 3/3-14 NPT |
| 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 |
|---|---|
| YMD-6399 PRIMARY | Appleton Marine Inc (USA) |
| AMD-1115 REV1 IT111 | Appleton Marine Inc (USA) |
| Reference | Meaning |
|---|---|
| BPS-40-N12 | 5/9 Secondary reference Lha Products Inc Sub of Lucas Industries of North America |
NSN 2805-01-423-4404 is a Breather, manufactured by Appleton Marine Inc, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-01-423-4404 has 2 manufacturer part numbers on file: YMD-6399 (Appleton Marine Inc), AMD-1115 REV1 IT111 (Appleton Marine Inc).
Key specifications for YMD-6399: Connection Type: THREADED; Body Material: PLASTIC; Special Features: 40.0 MICRON; End Item Identification: WEAPON SYSTEM E/I STRATEGIC SEALIFT CONVERSION SHIPS CLASS. 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.