The Elbow,pipe to Boss, cataloged under National Stock Number 4730-01-137-0359, 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 19 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-137-0359 |
| Item Name | Elbow,pipe to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 LOCKNUT AND 1 PREFORMED PACKING AND 1 TAILPIECE AND 1 UNION NUT |
| Flow Angle | 90.0 DEGREES |
| Connection Style | PLAIN (PIPE) FIRST END |
| Connection Style | DOUBLE THREADED SECTION W/ GASKET AND LOCKNUT SEALING (BOSS) SECOND END |
| Connection Type | THREADED EXTERNAL BOSS SECOND END |
| Connection Type | THREADED EXTERNAL PIPE FIRST END |
| Material Document and Classification | QQ-S-763,CL304,COND A FED SPEC SINGLE MATERIAL RESPONSE ELBOW |
| Material Document and Classification | QQ-S-763,CL316 FED SPEC SINGLE MATERIAL RESPONSE NUT |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Leg Length | 1.750 INCHES NOMINAL FIRST END IN |
| Leg Length | 3.120 INCHES NOMINAL SECOND END IN |
| Nominal Thread Size | 0.750 INCHES FIRST END IN |
| Nominal Thread Size | 0.875 INCHES SECOND END IN |
| Media for Which Designed | WATER SINGLE RESPONSE |
| Thread Class | 2A SECOND END A |
| Thread Quantity Per Inch | 14 SECOND END |
| Material | STEEL COMP 304 OVERALL |
| Thread Series Designator | UN SECOND END |
| Thread Series Designator | NPT FIRST END |
| 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 |
|---|---|
| 2621-021-02ASSY68 | 3/2 Design control — primary reference U.S. Government activity |
| 2621-021-02ASSY68 | 5/9 Secondary reference Northrop Grumman Space & Mission Systems Corp |
| 2621-021-02 | D/9 Drawing number reference only U.S. Government activity |
NSN 4730-01-137-0359 is a Elbow,pipe to Boss, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-137-0359: Furnished Items and Quantity: 1 LOCKNUT AND 1 PREFORMED PACKING AND 1 TAILPIECE AND 1 UNION NUT; Flow Angle: 90.0 DEGREES; Connection Style: PLAIN (PIPE) FIRST END; Connection Style: DOUBLE THREADED SECTION W/ GASKET AND LOCKNUT SEALING (BOSS) SECOND END. 19 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.