The Elbow,tube to Boss, cataloged under National Stock Number 4730-00-727-9804, 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 29 specifications, cited from the U.S. Government catalog. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-727-9804 |
| Item Name | Elbow,tube to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 SHORT COUPLING NUT AND 1 FERRULE SLEEVE AND 1 PREFORMED PACKING AND 1 LOCKNUT |
| Flow Angle | 90.0 DEGREES |
| Surface Treatment Document and Classification | UNABLE TO DECODE |
| Surface Treatment Document and Classification | QQ-P-35,TYPE 1 OR 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Connection Style | FLARELESS (TUBE) FIRST END |
| Connection Style | DOUBLE THREADED SECTION W/ GASKET AND LOCKNUT SEALING (BOSS) SECOND END |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Connection Type | THREADED EXTERNAL BOSS SECOND END |
| Material Document and Classification | FED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 1.250 INCHES FIRST END IN |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Leg Length | 1.860 INCHES MINIMUM AND 1.920 INCHES MAXIMUM FIRST END IN |
| Leg Length | 2.220 INCHES MINIMUM AND 2.280 INCHES MAXIMUM SECOND END IN |
| Nominal Thread Size | 1.625 INCHES SECOND END IN |
| Nominal Thread Size | 1.625 INCHES FIRST END IN |
| Seat Angle | 12.0 DEGREES FIRST END |
| Specification/standard Data | 96906-MS51839 GOVERNMENT STANDARD AND 81343-J514 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Maximum Operating Temp | 121.0 CELSIUS SINGLE RESPONSE DEGC |
| Nondefinitive Spec/std Data | 27A FIGURE A |
| Surface Treatment | UNABLE TO DECODE |
| Surface Treatment | PASSIVATE OVERALL |
| Media for Which Designed | UNABLE TO DECODE |
| Media for Which Designed | AIR SECOND RESPONSE |
| Media for Which Designed | HYDRAULIC FLUID FIRST RESPONSE |
| Thread Class | 2A SECOND END A |
| Thread Class | 2A FIRST END A |
| Thread Quantity Per Inch | 12 SECOND END |
| Thread Quantity Per Inch | 12 FIRST END |
| Material | STEEL COMP 304 OR STEEL COMP 316 OR STEEL COMP 303 OVERALL |
| 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 |
|---|---|
| MS51839-11SS | 5/9 Secondary reference Imperial |
| 20C5BUSS | 5/9 Secondary reference U.S. Government activity |
| MS51839-11SS | 5/1 Secondary reference Danfoss Power Solutions II, Llc |
| MS51839-11SS | 5/9 Secondary reference Dana Corp Weatherhead Div |
| MIL-F-18866 | 5/9 Secondary reference U.S. Government activity |
| MIL-DTL-18866 | 4/1 Identification reference U.S. Government activity |
| MS51839-11SS | 2/2 Government specification standardization U.S. Government activity |
| 20C5BUSS | 5/1 Secondary reference Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division |
NSN 4730-00-727-9804 is a Elbow,tube to Boss, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-727-9804: Furnished Items and Quantity: 1 SHORT COUPLING NUT AND 1 FERRULE SLEEVE AND 1 PREFORMED PACKING AND 1 LOCKNUT; Flow Angle: 90.0 DEGREES; Surface Treatment Document and Classification: UNABLE TO DECODE; Surface Treatment Document and Classification: QQ-P-35,TYPE 1 OR 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. 29 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.