The Hose,air Duct, cataloged under National Stock Number 4720-01-545-8458, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Heatercraft Marine Products, Inc.. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-545-8458 |
| Primary Part Number | H501-3 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Heatercraft Marine Products, Inc. |
| Status | ACTIVE |
| Temp Rating | 180.0 FAHRENHEIT DEGF |
| Connection Type | PLAIN BOTH ENDS |
| Style Designator | SLEEVE SECTION |
| Cross-Sectional Shape Style | ROUND |
| Inside Diameter | 3.000 INCHES NOMINAL BOTH ENDS IN |
| Material | PLASTIC ALL PLIES |
| 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 |
|---|---|
| H501-3 PRIMARY | Heatercraft Marine Products, Inc. (USA) |
| Reference | Meaning |
|---|---|
| H-501 | 5/1 Secondary reference Heatercraft Marine Products, Inc. |
NSN 4720-01-545-8458 is a Hose,air Duct, manufactured by Heatercraft Marine Products, Inc., classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-545-8458 has 1 manufacturer part number on file: H501-3 (Heatercraft Marine Products, Inc.).
Key specifications for H501-3: Temp Rating: 180.0 FAHRENHEIT DEGF; Connection Type: PLAIN BOTH ENDS; Style Designator: SLEEVE SECTION; Cross-Sectional Shape Style: ROUND. 6 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.