The Elbow,tube to Boss, cataloged under National Stock Number 4730-01-278-1001, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Hydraulics International, Inc. Dba Hydraulics International Inc. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-278-1001 |
| Primary Part Number | MS51527-B6Z |
| Item Name | Elbow,tube to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Hydraulics International, Inc. Dba Hydraulics International Inc |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 LOCKNUT AND 1 PREFORMED PACKING AND 1 TUBE COUPLING NUT W/SLEEVE |
| Flow Angle | 90.0 DEGREES |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END |
| Connection Style | FLARED (TUBE) FIRST END |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Connection Type | THREADED EXTERNAL BOSS SECOND END |
| Nominal Outside Diameter Tube Accommodated | 0.375 INCHES FIRST END IN |
| Leg Length | 1.250 INCHES NOMINAL SECOND END IN |
| Leg Length | 1.060 INCHES NOMINAL FIRST END IN |
| Nominal Thread Size | 0.562 INCHES ALL ENDS IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Specification/standard Data | 96906-MS51527 GOVERNMENT STANDARD AND 81343-J514 GOVERNMENT STANDARD |
| Nondefinitive Spec/std Data | 10A FIGURE A |
| Surface Treatment | ZINC OVERALL |
| Thread Class | 2A ALL ENDS A |
| Material | STEEL 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 |
| Part Number | Manufacturer |
|---|---|
| MS51527-B6Z | Hydraulics International, Inc. Dba Hydraulics International Inc (USA) |
| Reference | Meaning |
|---|---|
| J514 | 5/9 Secondary reference U.S. Government activity |
| MS51527B6Z | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 6C5BX-S-ZGC | 5/1 Secondary reference Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division |
| 6-6 070220CA | 5/9 Secondary reference U.S. Government activity |
| MIL-DTL-18866 | 4/1 Identification reference U.S. Government activity |
| 6C5BX-S-ZGC | 5/9 Secondary reference U.S. Government activity |
| MS51527A6Z | 2/2 Government specification standardization U.S. Government activity |
NSN 4730-01-278-1001 is a Elbow,tube to Boss, manufactured by Hydraulics International, Inc. Dba Hydraulics International Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-278-1001 has 1 manufacturer part number on file: MS51527-B6Z (Hydraulics International, Inc. Dba Hydraulics International Inc).
Key specifications for MS51527-B6Z: Furnished Items and Quantity: 1 LOCKNUT AND 1 PREFORMED PACKING AND 1 TUBE COUPLING NUT W/SLEEVE; Flow Angle: 90.0 DEGREES; Connection Style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END; Connection Style: FLARED (TUBE) FIRST END. 17 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.