The Hose,air Duct, cataloged under National Stock Number 4720-00-006-3554, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Bae Systems (operations) Limited. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4720-00-006-3554 |
| Primary Part Number | B310538 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Bae Systems (operations) Limited |
| Status | ACTIVE |
| Measuring Method and Length | 13.000 INCHES NOMINAL OVERALL IN |
| Connection Style | ROUND FIRST END |
| Connection Type | PREFORMED FIRST END |
| Style Designator | HELICALLY WOUND CONTINOUS WIRE SUPPORTED |
| Cross-Sectional Shape Style | ROUND |
| Wall Thickness | 0.087 INCHES NOMINAL IN |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Inside Diameter | 0.625 INCHES NOMINAL FIRST END IN |
| End Overall Length | 1.218 INCHES NOMINAL FIRST END IN |
| End Inside Diameter | 0.625 INCHES NOMINAL FIRST END IN |
| Material | STEEL REINFORCING WIRE |
| Material | PLASTIC POLYAMIDE NYLON SECOND PLY |
| Material | RUBBER CHLOROPRENE CLASS CR FIRST 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 |
|---|---|
| B310538 | Bae Systems (operations) Limited (GBR) |
| Reference | Meaning |
|---|---|
| B310538 | 3/9 Design control — primary reference British Aerospace (military Aircraft & Aerostructures) |
NSN 4720-00-006-3554 is a Hose,air Duct, manufactured by Bae Systems (operations) Limited, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-00-006-3554 has 1 manufacturer part number on file: B310538 (Bae Systems (operations) Limited).
Key specifications for B310538: Measuring Method and Length: 13.000 INCHES NOMINAL OVERALL IN; Connection Style: ROUND FIRST 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.