The Cross,tube, cataloged under National Stock Number 4730-01-276-5959, 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 The Boeing Company Div Defense. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-276-5959 |
| Primary Part Number | 7M522-4V |
| Item Name | Cross,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Connection Style | FLARED (TUBE) ALL ENDS |
| Criticality Code Justification | FEAT |
| Connection Type | THREADED EXTERNAL TUBE FIRST END BULKHEAD |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES ALL ENDS IN |
| Leg Length | 1.601 INCHES NOMINAL FIRST END IN |
| Leg Length | 0.976 INCHES NOMINAL SECOND END IN |
| Leg Length | 0.976 INCHES NOMINAL FOURTH END IN |
| Leg Length | 0.976 INCHES NOMINAL THIRD END IN |
| Nominal Thread Size | 0.438 INCHES FIRST END BULKHEAD IN |
| Nominal Thread Size | 0.438 INCHES ALL ENDS IN |
| Seat Angle | 37.0 DEGREES ALL ENDS |
| Surface Treatment | CHROMATE OVERALL |
| Thread Class | 3A FIRST END BULKHEAD A |
| Thread Class | 3A ALL ENDS A |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END BULKHEAD |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 7M522-4V | Sps Technologies, Llc Dba Airdrome Precision Components (USA) |
| 7M522-4V PRIMARY | The Boeing Company Div Defense (USA) |
| 7M522-4V | Nelson Aero Space, Inc. (USA) |
| 7M522-4V | Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply (USA) |
| Reference | Meaning |
|---|---|
| 10109018 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 7M522 | D/9 Drawing number reference only The Boeing Company Div Defense |
NSN 4730-01-276-5959 is a Cross,tube, manufactured by The Boeing Company Div Defense, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-276-5959 has 4 manufacturer part numbers on file: 7M522-4V (Sps Technologies, Llc Dba Airdrome Precision Components), 7M522-4V (The Boeing Company Div Defense), 7M522-4V (Nelson Aero Space, Inc.), 7M522-4V (Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply).
Key specifications for 7M522-4V: Connection Style: FLARED (TUBE) ALL ENDS; Criticality Code Justification: FEAT; Connection Type: THREADED EXTERNAL TUBE FIRST END BULKHEAD; Connection Type: THREADED EXTERNAL TUBE ALL ENDS. 18 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.