The Hose,air Duct, cataloged under National Stock Number 4720-01-294-2589, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Arrowhead Products Corp. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-294-2589 |
| Primary Part Number | WC021-4.00-108-8A |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Arrowhead Products Corp |
| Status | ACTIVE |
| Measuring Method and Length | 27.000 INCHES NOMINAL OVERALL IN |
| Connection Style | ROUND BOTH ENDS |
| Connection Type | SOFT BOTH ENDS |
| Style Designator | HELICALLY WOUND CONTINOUS WIRE SUPPORTED |
| Cross-Sectional Shape Style | ROUND |
| Operating Pressure | 31.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Inside Diameter | 4.000 INCHES NOMINAL FIRST END IN |
| End Overall Length | 2.000 INCHES NOMINAL BOTH ENDS IN |
| End Inside Diameter | 4.000 INCHES NOMINAL BOTH ENDS IN |
| Material | STEEL REINFORCING WIRE |
| Material | FIBERGLASS AND RUBBER SILICONE CLASS Q THIRD PLY |
| Material | FIBERGLASS AND RUBBER SILICONE CLASS Q FIRST PLY |
| Material | FIBERGLASS AND RUBBER SILICONE CLASS Q SECOND 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 |
|---|---|
| WC021-4.00-108-8A PRIMARY | Arrowhead Products Corp (USA) |
| 0214-0400-0410-20 PRIMARY | Flexible Technologies Inc (USA) |
| CEETS-16-108-8 | Hbd Industries, Inc Div Hbd/thermoid Inc (USA) |
| MIL320132010808 | Flexfab Llc (USA) |
| Reference | Meaning |
|---|---|
| 6196495 | 7/2 Vendor item drawing reference Naval Sea Systems Command |
| 0212-4.000 | 5/9 Secondary reference Flexible Technologies Inc |
| FLX100132010808 | 5/9 Secondary reference Flexfab Llc |
NSN 4720-01-294-2589 is a Hose,air Duct, manufactured by Arrowhead Products Corp, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-294-2589 has 4 manufacturer part numbers on file: WC021-4.00-108-8A (Arrowhead Products Corp), 0214-0400-0410-20 (Flexible Technologies Inc), CEETS-16-108-8 (Hbd Industries, Inc Div Hbd/thermoid Inc), MIL320132010808 (Flexfab Llc).
Key specifications for WC021-4.00-108-8A: Measuring Method and Length: 27.000 INCHES NOMINAL OVERALL IN; Connection Style: ROUND BOTH ENDS; Connection Type: SOFT BOTH ENDS; 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.