The Hose Assembly,air Duct, cataloged under National Stock Number 4720-01-242-4589, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Kirkhill, Inc. Dba Kirkhill Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-242-4589 |
| Primary Part Number | D5175-9 |
| Item Name | Hose Assembly,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Kirkhill, Inc. Dba Kirkhill Inc |
| Status | ACTIVE |
| Operating Pressure | 7.5 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| 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 |
|---|---|
| LE271-0073-0009 | The Boeing Company Div Legacy Am&m (USA) |
| D5175-9 PRIMARY | Kirkhill, Inc. Dba Kirkhill Inc (USA) |
| Reference | Meaning |
|---|---|
| LE271-0073 | 7/1 Vendor item drawing reference The Boeing Company Div Legacy Am&m |
NSN 4720-01-242-4589 is a Hose Assembly,air Duct, manufactured by Kirkhill, Inc. Dba Kirkhill Inc, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-242-4589 has 2 manufacturer part numbers on file: LE271-0073-0009 (The Boeing Company Div Legacy Am&m), D5175-9 (Kirkhill, Inc. Dba Kirkhill Inc).
3 possible matches (shared part number, not a government interchangeability claim): 4720-01-242-4592, 4720-01-242-4593, 4720-01-242-7793. Verify interchangeability with system specifications before substitution.
Key specifications for D5175-9: Operating Pressure: 7.5 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS. 1 specification is 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.