The Hose,air Duct, cataloged under National Stock Number 4720-01-450-1775, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Gates Corporation. Government technical data includes 7 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4720-01-450-1775 |
| Primary Part Number | 4663-1575 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Gates Corporation |
| Status | ACTIVE |
| Measuring Method and Length | 120.000 INCHES NOMINAL OVERALL IN |
| Minimum Inside Bending Radius | 6.000 INCHES IN |
| Connection Type | PLAIN BOTH ENDS |
| Style Designator | HELICALLY WOUND CONTINOUS WIRE SUPPORTED |
| Cross-Sectional Shape Style | ROUND |
| Inside Diameter | 3.500 INCHES NOMINAL FIRST END IN |
| Material | RUBBER CHLOROPRENE CLASS CR 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 |
|---|---|
| 4663-1575 PRIMARY | Gates Corporation (USA) |
| 163SB3-1/2INID | Gates Corporation (USA) |
| Reference | Meaning |
|---|---|
| 301320 | 5/9 Secondary reference Gates Corporation |
NSN 4720-01-450-1775 is a Hose,air Duct, manufactured by Gates Corporation, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-450-1775 has 2 manufacturer part numbers on file: 4663-1575 (Gates Corporation), 163SB3-1/2INID (Gates Corporation).
1 possible match (shared part number, not a government interchangeability claim): 5930-01-463-8961. Verify interchangeability with system specifications before substitution.
Key specifications for 4663-1575: Measuring Method and Length: 120.000 INCHES NOMINAL OVERALL IN; Minimum Inside Bending Radius: 6.000 INCHES IN; Connection Type: PLAIN BOTH ENDS; Style Designator: HELICALLY WOUND CONTINOUS WIRE SUPPORTED. 7 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.