The Hose Assembly,air Duct, cataloged under National Stock Number 4720-01-481-9520, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Tiger-Vac Inc.. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-481-9520 |
| Primary Part Number | 381138C |
| Item Name | Hose Assembly,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Tiger-Vac Inc. |
| Status | ACTIVE |
| Connection Style | ROUND SECOND END |
| Connection Type | COUPLING FIRST END |
| Connection Type | PREFORMED SECOND END |
| Style Designator | HELICALLY WOUND CONTINOUS WIRE SUPPORTED |
| Cross-Sectional Shape Style | ROUND |
| End Inside Diameter | 1.500 INCHES NOMINAL SECOND END IN |
| Material | PLASTIC 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 |
|---|---|
| 381138C PRIMARY | Tiger-Vac Inc. (USA) |
| Reference | Meaning |
|---|---|
| 381138 | 3/9 Design control — primary reference Tiger-Vac Inc. |
NSN 4720-01-481-9520 is a Hose Assembly,air Duct, manufactured by Tiger-Vac Inc., classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-481-9520 has 1 manufacturer part number on file: 381138C (Tiger-Vac Inc.).
Key specifications for 381138C: Connection Style: ROUND SECOND END; Connection Type: COUPLING FIRST END; Connection Type: PREFORMED SECOND END; Style Designator: HELICALLY WOUND CONTINOUS WIRE SUPPORTED. 7 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.