The Breather, cataloged under National Stock Number 4310-01-665-0803, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Hydro-Craft, Inc.. Government technical data includes 4 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-01-665-0803 |
| Primary Part Number | HC-120-PB5-S3 |
| Item Name | Breather |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Hydro-Craft, Inc. |
| Status | ACTIVE |
| Filter Type | DRY |
| Outside Diameter | 3.000 INCHES NOMINAL IN |
| Connection Type | SLOTTED |
| Body Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| HC-120-PB5-S3 PRIMARY | Hydro-Craft, Inc. (USA) |
NSN 4310-01-665-0803 is a Breather, manufactured by Hydro-Craft, Inc., classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-01-665-0803 has 1 manufacturer part number on file: HC-120-PB5-S3 (Hydro-Craft, Inc.).
Key specifications for HC-120-PB5-S3: Filter Type: DRY; Outside Diameter: 3.000 INCHES NOMINAL IN; Connection Type: SLOTTED; Body Material: STEEL CORROSION RESISTING. 4 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.