The Hose,air Duct, cataloged under National Stock Number 4720-00-494-8563, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4720-00-494-8563 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Status | ACTIVE |
| Measuring Method and Length | 5.000 INCHES NOMINAL OVERALL IN |
| Inside Width | 4.250 INCHES NOMINAL FIRST END IN |
| Inside Length | 5.375 INCHES NOMINAL FIRST END IN |
| Connection Style | RECTANGULAR BOTH ENDS |
| Connection Type | PREFORMED BOTH ENDS |
| Style Designator | FULLY CONVOLUTED |
| Cross-Sectional Shape Style | RECTANGULAR |
| Wall Thickness | 0.040 INCHES NOMINAL IN |
| End Inside Width | 4.250 INCHES NOMINAL BOTH ENDS IN |
| End Overall Length | 1.000 INCHES NOMINAL BOTH ENDS IN |
| End Inside Length | 5.380 INCHES NOMINAL BOTH ENDS IN |
| Material | RUBBER CHLOROPRENE CLASS CR SINGLE PLY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 502109 | 3/9 Design control — primary reference Eastman Kodak Co |
NSN 4720-00-494-8563 is a Hose,air Duct, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 1560-00-908-4889, 7520-01-340-7962, 5998-01-623-2545. Verify interchangeability with system specifications before substitution.
Key specifications for 4720-00-494-8563: Measuring Method and Length: 5.000 INCHES NOMINAL OVERALL IN; Inside Width: 4.250 INCHES NOMINAL FIRST END IN; Inside Length: 5.375 INCHES NOMINAL FIRST END IN; Connection Style: RECTANGULAR BOTH ENDS. 12 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.