The Elbow,flange to Tube, cataloged under National Stock Number 4730-00-804-5629, 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 25 specifications, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 4730-00-804-5629 |
| Primary Part Number | 404816 |
| Item Name | Elbow,flange to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Recess Nominal Depth | 0.046 INCHES SECOND ENDUNABLE TO DECODE IN |
| Flange Shape | TRIANGULAR WITH HOLES SECOND END |
| Flow Angle | 90.0 DEGREES |
| Flange Face Design | RECESSED STRAIGHT SECOND END |
| Connection Style | INVERTED FLARE (TUBE) FIRST END |
| Nominal Length | 1.446 INCHES SECOND END IN |
| Bolt Circle Nominal Diameter | 1.350 INCHES SECOND END IN |
| Connection Type | FLANGE SECOND END |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Material Document and Classification | AMS5646 ASSN STD SINGLE MATERIAL RESPONSE OVERALLUNABLE TO DECODE |
| Bolt Hole Nominal Diameter | 0.286 INCHES SECOND END IN |
| Nominal Outside Diameter Tube Accommodated | 0.937 INCHES FIRST ENDUNABLE TO DECODE IN |
| Leg Length | 0.700 INCHES NOMINAL SECOND END IN |
| Leg Length | 1.770 INCHES NOMINAL FIRST END IN |
| Reduced Passage Nominal Inside Diameter | 0.614 INCHES SECOND ENDUNABLE TO DECODE IN |
| Nominal Thread Size | 1.188 INCHES FIRST END IN |
| Seat Angle | 25.0 DEGREES FIRST END |
| Bolt Hole Quantity | 3 SECOND END |
| Nominal Width | 1.456 INCHES SECOND END IN |
| Thread Class | 3A FIRST END A |
| Thread Quantity Per Inch | 12 FIRST END |
| Material | STEEL CORROSION RESISTING OVERALLUNABLE TO DECODE |
| Thread Series Designator | UN FIRST END |
| Nominal Thickness | 0.180 INCHES SECOND END IN |
| Recess Nominal Diameter | 0.974 INCHES SECOND END 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 |
|---|---|
| 404816 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 404816 | Rtx Corporation Div Pratt & Whitney (USA) |
| Reference | Meaning |
|---|---|
| 404816 | 5/9 Secondary reference National Aerospace Corp |
| 404816 | 5/9 Secondary reference General Electric Co Apparatus Sales Division of Apparatus Group |
| 404816 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
NSN 4730-00-804-5629 is a Elbow,flange to Tube, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-804-5629 has 2 manufacturer part numbers on file: 404816 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 404816 (Rtx Corporation Div Pratt & Whitney).
1 possible match (shared part number, not a government interchangeability claim): 6530-01-693-1690. Verify interchangeability with system specifications before substitution.
Key specifications for 404816: Recess Nominal Depth: 0.046 INCHES SECOND ENDUNABLE TO DECODE IN; Flange Shape: TRIANGULAR WITH HOLES SECOND END; Flow Angle: 90.0 DEGREES; Flange Face Design: RECESSED STRAIGHT SECOND END. 25 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.