The Coupling,air Duct, cataloged under National Stock Number 4730-01-516-0894, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Huntington Ingalls Inc Div Newport News Shipbuilding. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-516-0894 |
| Primary Part Number | DF2680-1553 FN 205 |
| Item Name | Coupling,air Duct |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Huntington Ingalls Inc Div Newport News Shipbuilding |
| Status | ACTIVE |
| Overall Diameter | 6.380 INCHES NOMINAL IN |
| General Characteristics Item Description | SYNTHETIC RUBBER MIL-R-6855/5 STYLE A |
| Criticality Code Justification | FEAT |
| Material | RUBBER SYNTHETIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 512-6903589-F81 | Naval Sea Systems Command (USA) |
| DF2680-1553 FN 205 PRIMARY | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 512-6406851 FN 205 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| B643-1010-F81 | 5/2 Secondary reference U.S. Government activity |
| 6406851 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4730-01-516-0894 is a Coupling,air Duct, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-516-0894 has 3 manufacturer part numbers on file: 512-6903589-F81 (Naval Sea Systems Command), DF2680-1553 FN 205 (Huntington Ingalls Inc Div Newport News Shipbuilding), 512-6406851 FN 205 (Naval Sea Systems Command).
Key specifications for DF2680-1553 FN 205: Overall Diameter: 6.380 INCHES NOMINAL IN; General Characteristics Item Description: SYNTHETIC RUBBER MIL-R-6855/5 STYLE A; Criticality Code Justification: FEAT; Overall Length: 5.000 INCHES NOMINAL IN. 4 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.