The Nut,tube Coupling, cataloged under National Stock Number 4730-00-293-7563, 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 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-00-293-7563 |
| Primary Part Number | 208833 |
| Item Name | Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Length to Shoulder | 0.620 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN |
| Width Across Flats | 0.984 INCHES MINIMUM AND 1.002 INCHES MAXIMUM IN |
| Thread Series | UNS |
| Thread Pitch Diameters | +0.8013 TO 0.8153 INCHES IN |
| Material Document and Classification | AMS 5613 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.875 INCHES IN |
| Nut Height | 0.770 INCHES MINIMUM AND 0.790 INCHES MAXIMUM IN |
| Nut Style | TUBE COUPLING |
| Thread Quantity Per Inch | 16 |
| Material | STEEL COMP 410 OVERALL |
| Fabrication Method | MACHINED |
| Smallest Inside Diameter | 0.610 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN |
| Nominal Tube Outside Diameter | 0.500 INCHES IN |
| 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 |
|---|---|
| 208833 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 208833 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
NSN 4730-00-293-7563 is a Nut,tube Coupling, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-293-7563 has 1 manufacturer part number on file: 208833 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
1 possible match (shared part number, not a government interchangeability claim): 6750-01-429-1559. Verify interchangeability with system specifications before substitution.
Key specifications for 208833: Length to Shoulder: 0.620 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN; Width Across Flats: 0.984 INCHES MINIMUM AND 1.002 INCHES MAXIMUM IN; Thread Series: UNS; Thread Pitch Diameters: +0.8013 TO 0.8153 INCHES IN. 14 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.