The Elbow,tube to Boss, cataloged under National Stock Number 4730-00-803-5840, 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 24 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-00-803-5840 |
| Item Name | Elbow,tube to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Flow Angle | 90.0 DEGREES |
| Connection Style | FLARELESS (TUBE) FIRST END |
| Connection Style | DOUBLE THREADED SECTION W/ GASKET AND LOCKNUT SEALING (BOSS) SECOND END BULKHEAD |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Connection Type | THREADED EXTERNAL BOSS SECOND END |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 1.000 INCHES FIRST END IN |
| Leg Length | 1.553 INCHES NOMINAL FIRST END IN |
| Leg Length | 1.828 INCHES MINIMUM AND 1.872 INCHES MAXIMUM SECOND END IN |
| Nominal Thread Size | 1.312 INCHES ALL ENDS IN |
| Nominal Thread Size | 1.312 INCHES SECOND END BULKHEAD IN |
| Seat Angle | 12.0 DEGREES FIRST END |
| Surface Treatment | PASSIVATE INSIDE |
| Surface Treatment | UNABLE TO DECODE |
| Surface Treatment | PASSIVATE OUTSIDE |
| Media for Which Designed | FLUID SINGLE RESPONSE |
| Thread Class | 3A SECOND END BULKHEAD A |
| Thread Class | 3A ALL ENDS A |
| Thread Quantity Per Inch | 12 SECOND END |
| Thread Quantity Per Inch | 12 FIRST END |
| Material | STEEL COMP 304 OVERALL |
| Thread Series Designator | UNABLE TO DECODE |
| Thread Series Designator | UNIFIED NATIONAL JOINT (UNJ) ALL ENDS |
| Thread Series Designator | UNIFIED NATIONAL JOINT (UNJ) SECOND END BULKHEAD |
| 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 |
|---|---|
| VS1230-16CC | 3/2 Design control — primary reference U.S. Government activity |
| 202-21607C16 | 5/2 Secondary reference U.S. Government activity |
| CVC4287J16 | 3/2 Design control — primary reference U.S. Government activity |
| VSF1230-16CC | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4730-00-803-5840 is a Elbow,tube to Boss, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-803-5840: Flow Angle: 90.0 DEGREES; Connection Style: FLARELESS (TUBE) FIRST END; Connection Style: DOUBLE THREADED SECTION W/ GASKET AND LOCKNUT SEALING (BOSS) SECOND END BULKHEAD; Connection Type: THREADED EXTERNAL TUBE FIRST END. 24 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.