The Hose,air Duct, cataloged under National Stock Number 4720-01-327-5249, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Cooper, Herbert Dba Lh Import-Export. Government technical data includes 15 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-327-5249 |
| Primary Part Number | HC21424-87 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Cooper, Herbert Dba Lh Import-Export |
| Status | ACTIVE |
| Measuring Method and Length | 87.000 INCHES NOMINAL OVERALL IN |
| Connection Style | ROUND FIRST END |
| Connection Type | SOFT BOTH ENDS |
| Style Designator | HELICALLY WOUND CONTINOUS WIRE SUPPORTED |
| Cross-Sectional Shape Style | ROUND |
| Wall Thickness | 0.125 INCHES NOMINAL IN |
| Inside Diameter | 1.500 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 | RUBBER FIRST PLY |
| Material | COTTON AND RUBBER THIRD PLY |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE FOURTH PLY |
| Material | RUBBER FIFTH PLY |
| Material | RUBBER 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 |
|---|---|
| HC21424-87 PRIMARY | Cooper, Herbert Dba Lh Import-Export (USA) |
| Reference | Meaning |
|---|---|
| H707-3 | 3/2 Design control — primary reference U.S. Government activity |
| 12553478 | D/9 Drawing number reference only Army, United States Department of the Dba Rock Island Arsenal Jmtc |
| 12553478-3 | 7/2 Vendor item drawing reference Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
| HC21424-87 | 5/9 Secondary reference Harper and Bateman Pickle Co Inc |
| 12553478-11 | 5/9 Secondary reference Army, United States Department of the Dba Rock Island Arsenal Jmtc |
NSN 4720-01-327-5249 is a Hose,air Duct, manufactured by Cooper, Herbert Dba Lh Import-Export, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-327-5249 has 1 manufacturer part number on file: HC21424-87 (Cooper, Herbert Dba Lh Import-Export).
1 possible match (shared part number, not a government interchangeability claim): 4720-01-355-3310. Verify interchangeability with system specifications before substitution.
Key specifications for HC21424-87: Measuring Method and Length: 87.000 INCHES NOMINAL OVERALL IN; Connection Style: ROUND FIRST END; Connection Type: SOFT BOTH ENDS; Style Designator: HELICALLY WOUND CONTINOUS WIRE SUPPORTED. 15 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.