The Hose,air Duct, cataloged under National Stock Number 4720-01-003-4054, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Deflect-O Corp. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-003-4054 |
| Primary Part Number | BH420W |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Deflect-O Corp |
| Status | ACTIVE |
| Measuring Method and Length | 240.000 INCHES NOMINAL OVERALL IN |
| Connection Type | PLAIN BOTH ENDS |
| Style Designator | FULLY CONVOLUTED |
| Cross-Sectional Shape Style | ROUND |
| Features Provided | FLAME RESISTANT |
| Inside Diameter | 4.000 INCHES NOMINAL FIRST END IN |
| Material | PLASTIC 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 |
|---|---|
| BH420W PRIMARY | Deflect-O Corp (USA) |
| Reference | Meaning |
|---|---|
| VV421 | 5/9 Secondary reference P-G Assco Corp |
| VV420 | 5/9 Secondary reference P-G Assco Corp |
NSN 4720-01-003-4054 is a Hose,air Duct, manufactured by Deflect-O Corp, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-003-4054 has 1 manufacturer part number on file: BH420W (Deflect-O Corp).
Key specifications for BH420W: Measuring Method and Length: 240.000 INCHES NOMINAL OVERALL IN; Connection Type: PLAIN BOTH ENDS; Style Designator: FULLY CONVOLUTED; Cross-Sectional Shape Style: ROUND. 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.