The Hose Assembly,air Duct, cataloged under National Stock Number 4720-00-015-1877, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-00-015-1877 |
| Item Name | Hose Assembly,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Status | ACTIVE |
| Measuring Method and Length | 7.500 INCHES NOMINAL OVERALL IN |
| Connection Type | COUPLING FIRST END |
| Style Designator | SLEEVE SECTION |
| Coupling Style | EXTERNAL COUPLING CLAMP-LOCKING FIRST END |
| Material Document and Classification | FED STD 66 COMP 201,202,301 THRU 305 FED STD SINGLE MATERIAL RESPONSE FIRST END COUPLING |
| Material Document and Classification | MIL-C-12189 MIL SPEC ALL MATERIAL RESPONSES ALL PLIES |
| Cross-Sectional Shape Style | ROUND |
| Inside Diameter | 4.125 INCHES NOMINAL FIRST END IN |
| Material | STEEL CORROSION RESISTING FIRST END COUPLING |
| Material | COTTON AND WOOL AND RUBBER SYNTHETIC ALL PLIES |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| D5-19-1899 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4720-00-015-1877 is a Hose Assembly,air Duct, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
Key specifications for 4720-00-015-1877: Measuring Method and Length: 7.500 INCHES NOMINAL OVERALL IN; Connection Type: COUPLING FIRST END; Style Designator: SLEEVE SECTION; Coupling Style: EXTERNAL COUPLING CLAMP-LOCKING FIRST END. 10 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.