The Elbow,tube to Boss, cataloged under National Stock Number 4730-00-448-5223, 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 22 specifications, cited from the U.S. Government catalog. 13 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-448-5223 |
| Item Name | Elbow,tube to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 FERRULE SLEEVE AND 1 LOCKNUT AND 1 PREFORMED PACKING AND 1 SHORT COUPLING NUT AND 1 FLAT WASHER |
| Flow Angle | 90.0 DEGREES |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END |
| Connection Style | FLARELESS (TUBE) FIRST END |
| 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 | 0.500 INCHES FIRST END IN |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Leg Length | 1.250 INCHES NOMINAL FIRST END IN |
| Leg Length | 1.450 INCHES NOMINAL SECOND END IN |
| Nominal Thread Size | 0.750 INCHES ALL ENDS IN |
| Seat Angle | 12.0 DEGREES FIRST END |
| Specification/standard Data | 96906-MS51839 GOVERNMENT STANDARD |
| Maximum Operating Temp | 250.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Surface Treatment | CADMIUM OVERALL |
| Media for Which Designed | HYDRAULIC FLUID SECOND RESPONSE |
| Media for Which Designed | AIR FIRST RESPONSE |
| Thread Class | 2A ALL ENDS A |
| Material | STEEL COMP 1213 OR STEEL COMP 1117 OR STEEL COMP 1118 OR STEEL COMP 1137 OR STEEL COMP 12L14 OVERALL |
| Thread Series Designator | UNF 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 |
|---|---|
| 492-15018 | C/1 Advisory reference — outside the item-of-supply concept Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division |
| E101286 PC NO 50 | C/1 Advisory reference — outside the item-of-supply concept Control Flow, Inc. Dba Control Flow Inc |
| MS51839-6 | 5/9 Secondary reference U.S. Government activity |
| 502-5754716 ITEM 9 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| MS51839-6 | 2/2 Government specification standardization U.S. Government activity |
| MIL-DTL-18866 | 4/1 Identification reference U.S. Government activity |
| MS51839-6 | 5/1 Secondary reference Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division |
| MIL-F-18866 | 5/9 Secondary reference U.S. Government activity |
| MIL-F-21467 FIG 93 | 5/9 Secondary reference U.S. Government activity |
| MS51839-26 | 5/9 Secondary reference U.S. Government activity |
| E102170 PC NO 50 | C/1 Advisory reference — outside the item-of-supply concept Control Flow, Inc. Dba Control Flow Inc |
| 8515X8 | 5/9 Secondary reference Dana Corp Weatherhead Div |
| MS51839-6 | 5/9 Secondary reference Imperial |
NSN 4730-00-448-5223 is a Elbow,tube to Boss, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4730-00-930-3669. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-00-448-5223: Furnished Items and Quantity: 1 FERRULE SLEEVE AND 1 LOCKNUT AND 1 PREFORMED PACKING AND 1 SHORT COUPLING NUT AND 1 FLAT WASHER; Flow Angle: 90.0 DEGREES; Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Connection Style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END. 22 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.