The Duct,orifice,calibrated, cataloged under National Stock Number 4720-01-299-2273, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is E.a. - Maestranza Aerea De Sevilla. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4720-01-299-2273 |
| Primary Part Number | 296705-2MAS |
| Item Name | Duct,orifice,calibrated |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | E.a. - Maestranza Aerea De Sevilla |
| Status | ACTIVE |
| FSC Application Data | ADAPTER ASSEMBLY |
| General Characteristics Item Description | 4.760 IN. O/A DIA; 2.090 IN. O/A H; CORROSION RESISTANT STEEL PER QQ-S-763,TYPE 321 IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 296705-2MAS | E.a. - Maestranza Aerea De Sevilla (ESP) |
| Reference | Meaning |
|---|---|
| 296705-2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4720-01-299-2273 is a Duct,orifice,calibrated, manufactured by E.a. - Maestranza Aerea De Sevilla, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-299-2273 has 1 manufacturer part number on file: 296705-2MAS (E.a. - Maestranza Aerea De Sevilla).
Key specifications for 296705-2MAS: FSC Application Data: ADAPTER ASSEMBLY; General Characteristics Item Description: 4.760 IN. O/A DIA; 2.090 IN. O/A H; CORROSION RESISTANT STEEL PER QQ-S-763,TYPE 321 IN; End Item Identification: F-18 ACFT. 2 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.
NSN 4720-01-299-2273 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.