The Hose,air Duct, cataloged under National Stock Number 4720-01-690-3777, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Sae International Dba Sae International. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4720-01-690-3777 |
| Primary Part Number | AS1544-16A0252 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Hose Weight | 1.60 OUNCES PER LINEAR FOOT OZ |
| Measuring Method and Length | 25.0 INCHES NOMINAL OVERALL IN |
| Temp Rating | 121.0 CELSIUS DEGC |
| Outside Length | 25.0 INCHES NOMINAL BOTH ENDS IN |
| Connection Style | ROUND BOTH ENDS |
| Connection Type | FLANGE FIRST END |
| Style Designator | HELICALLY WOUND CONTINOUS WIRE SUPPORTED |
| Material Document and Classification | A1501 ASSN STD SINGLE MATERIAL RESPONSE ALL PLIES |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 4.4 INCHES NOMINAL SECOND END IN |
| Operating Pressure | 3.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Inside Diameter | 4.0 INCHES NOMINAL FIRST END IN |
| End Overall Length | 25.0 INCHES NOMINAL BOTH ENDS IN |
| End Inside Diameter | 4.4 INCHES NOMINAL FIRST END IN |
| Material | RUBBER AND FIBERGLASS 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 |
| Part Number | Manufacturer |
|---|---|
| AS1544-16A0252 PRIMARY | Sae International Dba Sae International (USA) |
| AS1544-16A0252 | Leonardo Spa Aeronautics Division - Pomigliano D'arco Site (ITA) |
| Reference | Meaning |
|---|---|
| SAE-AS1501 | 3/1 Design control — primary reference Sae International Dba Sae International |
NSN 4720-01-690-3777 is a Hose,air Duct, manufactured by Sae International Dba Sae International, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-690-3777 has 2 manufacturer part numbers on file: AS1544-16A0252 (Sae International Dba Sae International), AS1544-16A0252 (Leonardo Spa Aeronautics Division - Pomigliano D'arco Site).
Key specifications for AS1544-16A0252: Hose Weight: 1.60 OUNCES PER LINEAR FOOT OZ; Measuring Method and Length: 25.0 INCHES NOMINAL OVERALL IN; Temp Rating: 121.0 CELSIUS DEGC; Outside Length: 25.0 INCHES NOMINAL BOTH ENDS IN. 15 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.