The Elbow,flange to Tube, cataloged under National Stock Number 4730-00-407-6551, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 27 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-407-6551 |
| Item Name | Elbow,flange to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Recess Nominal Depth | 0.562 INCHES SECOND END IN |
| Flange Shape | ROUND SECOND END |
| Flow Angle | 45.0 DEGREES |
| Flange Face Design | RECESSED STRAIGHT SECOND END |
| Surface Treatment Document and Classification | QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE INSIDEUNABLE TO DECODE |
| Surface Treatment Document and Classification | QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OUTSIDEUNABLE TO DECODE |
| Connection Style | FLARED (TUBE) FIRST END |
| Connection Type | FLANGE SECOND END |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Material Document and Classification | QQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALLUNABLE TO DECODE |
| Nominal Outside Diameter Tube Accommodated | 0.750 INCHES FIRST END IN |
| Operating Pressure | 1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Leg Length | 1.312 INCHES NOMINAL FIRST END IN |
| Leg Length | 0.812 INCHES NOMINAL SECOND END IN |
| Nominal Thread Size | 1.062 INCHES FIRST END IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Specification/standard Data | 96906-MS20761 GOVERNMENT STANDARD |
| Maximum Operating Temp | 273.0 CELSIUS SINGLE RESPONSE DEGC |
| Nominal Outside Diameter | 1.250 INCHES SECOND END IN |
| Surface Treatment | CADMIUM OVERALLUNABLE TO DECODE |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSEUNABLE TO DECODE |
| Thread Class | 3A FIRST END A |
| Thread Quantity Per Inch | 12 FIRST END |
| Material | STEEL OVERALLUNABLE TO DECODE |
| Thread Series Designator | UN FIRST END |
| Nominal Thickness | 0.125 INCHES SECOND END IN |
| Recess Nominal Diameter | 0.609 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 |
| Reference | Meaning |
|---|---|
| AS4875 | 5/9 Secondary reference U.S. Government activity |
| SAE-AS4875 | 5/1 Secondary reference Sae International Dba Sae International |
| AS4875 | 5/9 Secondary reference Sae International Dba Sae International |
| MS20761-12 | 2/2 Government specification standardization U.S. Government activity |
NSN 4730-00-407-6551 is a Elbow,flange to Tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-407-6551: Recess Nominal Depth: 0.562 INCHES SECOND END IN; Flange Shape: ROUND SECOND END; Flow Angle: 45.0 DEGREES; Flange Face Design: RECESSED STRAIGHT SECOND END. 27 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.