The Hose,air Duct, cataloged under National Stock Number 4720-01-244-2511, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Naval Sea Systems Command. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-244-2511 |
| Primary Part Number | 501-5589765 ITEM 31 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Cross-Sectional Shape Style | ROUND |
| Inside Diameter | 4.000 INCHES NOMINAL FIRST END IN |
| Material | RUBBER NATURAL SINGLE PLY |
| 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 |
|---|---|
| 501-5589765 ITEM 31 PRIMARY | Naval Sea Systems Command (USA) |
| 3140536 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| Reference | Meaning |
|---|---|
| 2680-1179 ITEM 31 | 5/9 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
| 501-5589765 | D/9 Drawing number reference only Naval Sea Systems Command |
| 2680-1179 | D/9 Drawing number reference only Huntington Ingalls Inc Div Newport News Shipbuilding |
NSN 4720-01-244-2511 is a Hose,air Duct, manufactured by Naval Sea Systems Command, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-244-2511 has 2 manufacturer part numbers on file: 501-5589765 ITEM 31 (Naval Sea Systems Command), 3140536 (Huntington Ingalls Inc Div Newport News Shipbuilding).
Key specifications for 501-5589765 ITEM 31: Cross-Sectional Shape Style: ROUND; Inside Diameter: 4.000 INCHES NOMINAL FIRST END IN; Material: RUBBER NATURAL SINGLE PLY. 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.