The Hose,air Duct, cataloged under National Stock Number 4720-00-824-9124, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Hbd Industries, Inc Div Hbd/thermoid Inc. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4720-00-824-9124 |
| Primary Part Number | AD-845-5 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Hbd Industries, Inc Div Hbd/thermoid Inc |
| Status | ACTIVE |
| Measuring Method and Length | 14.875 INCHES NOMINAL OVERALL IN |
| Connection Type | PREFORMED SECOND END |
| Connection Type | PREFORMED FIRST END |
| Style Designator | HELICALLY WOUND CONTINOUS WIRE SUPPORTED |
| Cross-Sectional Shape Style | ROUND |
| Wall Thickness | 0.047 INCHES NOMINAL IN |
| Operating Pressure | 0.0 POUNDS PER SQUARE INCH (PSI) NOMINAL EXTERNAL LBS |
| Features Provided | OZONE RESISTANT |
| Inside Diameter | 2.250 INCHES NOMINAL FIRST END IN |
| End Overall Length | 1.500 INCHES NOMINAL FIRST END IN |
| End Overall Length | 1.750 INCHES NOMINAL SECOND END IN |
| End Inside Diameter | 2.500 INCHES NOMINAL BOTH ENDS IN |
| Material | FIBERGLASS AND RUBBER CHLOROPRENE CLASS CR 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 |
|---|---|
| AD-845-5 PRIMARY | Hbd Industries, Inc Div Hbd/thermoid Inc (USA) |
| 32-83045-5 | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| AD-845 | D/9 Drawing number reference only Hbd Industries, Inc Div Hbd/thermoid Inc |
NSN 4720-00-824-9124 is a Hose,air Duct, manufactured by Hbd Industries, Inc Div Hbd/thermoid Inc, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-00-824-9124 has 2 manufacturer part numbers on file: AD-845-5 (Hbd Industries, Inc Div Hbd/thermoid Inc), 32-83045-5 (The Boeing Company Div Defense).
Key specifications for AD-845-5: Measuring Method and Length: 14.875 INCHES NOMINAL OVERALL IN; Connection Type: PREFORMED SECOND END; Connection Type: PREFORMED FIRST END; Style Designator: HELICALLY WOUND CONTINOUS WIRE SUPPORTED. 13 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.