The Hose,air Duct, cataloged under National Stock Number 4720-00-702-4528, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Flexfab Llc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 — Hose and Flexible Tubing (FSG 47) |
| Manufacturers | Satair A/s (CAGE R1120); Flexfab Llc (CAGE 16632) |
| Parameter | Value |
|---|---|
| NSN | 4720-00-702-4528 |
| Primary Part Number | SIK1004-0003 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Flexfab Llc |
| Status | ACTIVE |
| 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 |
|---|---|
| SIK1004-0003 | Satair A/s (DNK) |
| SIK1004-0003 PRIMARY | Flexfab Llc (USA) |
| Reference | Meaning |
|---|---|
| SIK1004 | D/9 Drawing number reference only Flexfab Llc |
| FT1844-11 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| FT-1844-3 | 5/9 Secondary reference Flexible Technologies Inc |
NSN 4720-00-702-4528 is a Hose,air Duct, manufactured by Flexfab Llc, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-00-702-4528 has 2 manufacturer part numbers on file: SIK1004-0003 (Satair A/s), SIK1004-0003 (Flexfab Llc).
1 possible match (shared part number, not a government interchangeability claim): 4720-00-807-6987. 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.