The Hose,air Duct, cataloged under National Stock Number 4720-01-252-2644, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Flexfab Llc. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-252-2644 |
| Primary Part Number | BACD40A8-56-6A14 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Flexfab Llc |
| Status | ACTIVE |
| Measuring Method and Length | 17.000 INCHES NOMINAL OVERALL IN |
| Connection Style | ROUND BOTH ENDS |
| Connection Type | SOFT BOTH ENDS |
| Style Designator | HELICALLY WOUND CONTINOUS WIRE SUPPORTED |
| Material Document and Classification | MIL-Y-1140 MIL SPEC SINGLE MATERIAL RESPONSE REINFORCING CORD |
| Cross-Sectional Shape Style | ROUND |
| Wall Thickness | 0.080 INCHES NOMINAL IN |
| Operating Pressure | 4.5 POUNDS PER SQUARE INCH (PSI) NOMINAL EXTERNAL LBS |
| Specification/standard Data | 81205-BACD40A MANUFACTURERS STANDARD |
| Nondefinitive Spec/std Data | 2 CLASS AND C GRADE AND 2 TYPE |
| Inside Diameter | 2.000 INCHES NOMINAL FIRST END IN |
| End Overall Length | 1.500 INCHES NOMINAL BOTH ENDS IN |
| End Inside Diameter | 1.500 INCHES NOMINAL BOTH ENDS IN |
| Material | STEEL REINFORCING WIRE |
| Material | FIBERGLASS REINFORCING CORD |
| Material | COTTON AND FIBERGLASS FIRST PLY |
| Material | COTTON AND FIBERGLASS 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 |
|---|---|
| BACD40A8-56-6A14 | Flexfab Llc (USA) |
| BACD40A8-56-6A14 | Bemco, Inc (USA) |
| BACD40A8-56-6A14 | Arrowhead Products Corp (USA) |
| Reference | Meaning |
|---|---|
| BACD40A8-56-6A14 | 5/2 Secondary reference U.S. Government activity |
| BACD40A8-56-6A14 | 3/2 Design control — primary reference U.S. Government activity |
| BACD40A8-56-6A14 | 5/2 Secondary reference U.S. Government activity |
| BACD40A | D/9 Drawing number reference only U.S. Government activity |
NSN 4720-01-252-2644 is a Hose,air Duct, manufactured by Flexfab Llc, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-252-2644 has 3 manufacturer part numbers on file: BACD40A8-56-6A14 (Flexfab Llc), BACD40A8-56-6A14 (Bemco, Inc), BACD40A8-56-6A14 (Arrowhead Products Corp).
Key specifications for BACD40A8-56-6A14: Measuring Method and Length: 17.000 INCHES NOMINAL OVERALL IN; Connection Style: ROUND BOTH ENDS; Connection Type: SOFT BOTH ENDS; Style Designator: HELICALLY WOUND CONTINOUS WIRE SUPPORTED. 17 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.