The Elbow,tube, cataloged under National Stock Number 4730-00-554-7773, 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 16 specifications, cited from the U.S. Government catalog. 12 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-554-7773 |
| Item Name | Elbow,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Flow Angle | 45.0 DEGREES |
| Connection Style | FLARED (TUBE) ALL ENDS |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Nominal Outside Diameter Tube Accommodated | 0.625 INCHES ALL ENDS IN |
| Leg Length | 2.172 INCHES NOMINAL FIRST END IN |
| Leg Length | 1.094 INCHES NOMINAL SECOND END IN |
| Nominal Thread Size | 0.875 INCHES ALL ENDS IN |
| Nominal Thread Size | 0.875 INCHES FIRST END BULKHEAD IN |
| Seat Angle | 37.0 DEGREES ALL ENDS |
| Specification/standard Data | 88044-AN837 GOVERNMENT STANDARD |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A FIRST END BULKHEAD A |
| Thread Class | 3A ALL ENDS A |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END BULKHEAD |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS |
| 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 |
|---|---|
| AN837-10J | 5/9 Secondary reference Air World Mfg |
| AN837-10J | 5/1 Secondary reference Crown Fitting Co Inc |
| AN837-10J | 5/1 Secondary reference Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution |
| AN837-10J | 5/1 Secondary reference Aerofit, Llc |
| AN837-10J | 5/9 Secondary reference Arlington Air Parts Inc |
| AN837-10J | 2/2 Government specification standardization U.S. Government activity |
| AN837-10J | 5/1 Secondary reference Hydro-Fitting Manufacturing Corporation |
| AN837-10J | 5/1 Secondary reference Faber Enterprises, Inc. Div Faber Enterprise Inc |
| AN837-10J | 5/1 Secondary reference Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply |
| AN837-10J | 5/9 Secondary reference Designed Metal Connections Inc Dba Permaswage Usa Div Permaswage, a Pcc Company |
| AN837-10J | 5/9 Secondary reference Collins Engineering Corp |
| AN837-10C | 5/9 Secondary reference U.S. Government activity |
NSN 4730-00-554-7773 is a Elbow,tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-554-7773: Flow Angle: 45.0 DEGREES; Connection Style: FLARED (TUBE) ALL ENDS; Connection Type: THREADED EXTERNAL TUBE ALL ENDS; Nominal Outside Diameter Tube Accommodated: 0.625 INCHES ALL ENDS IN. 16 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.