The Hose,air Duct, cataloged under National Stock Number 4720-01-181-9354, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Royal Engineered Composites, Inc.. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 — Hose and Flexible Tubing (FSG 47) |
| Manufacturers | Royal Engineered Composites, Inc. (CAGE 16357); Honeywell International Inc. Div Aerospace - Torrance (CAGE 70210) |
| Parameter | Value |
|---|---|
| NSN | 4720-01-181-9354 |
| Primary Part Number | SF2-152 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Royal Engineered Composites, Inc. |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| SF2-152 PRIMARY | Royal Engineered Composites, Inc. (USA) |
| 2201859-16 | Honeywell International Inc. Div Aerospace - Torrance (USA) |
| Reference | Meaning |
|---|---|
| 5581 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4720-01-181-9354 is a Hose,air Duct, manufactured by Royal Engineered Composites, Inc., classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-181-9354 has 2 manufacturer part numbers on file: SF2-152 (Royal Engineered Composites, Inc.), 2201859-16 (Honeywell International Inc. Div Aerospace - Torrance).
3 possible matches (shared part number, not a government interchangeability claim): 3120-01-375-7197, 6625-01-376-9832, 6530-01-698-7502. Verify interchangeability with system specifications before substitution.
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.