The Cross,tube to Boss, cataloged under National Stock Number 4730-01-141-2559, 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 Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 30 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-141-2559 |
| Primary Part Number | 65664-09207-101 |
| Item Name | Cross,tube to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END |
| Connection Style | FLARELESS (TUBE) THIRD END |
| Connection Style | FLARELESS (TUBE) FIRST END |
| Connection Style | GASKET SEAL (BOSS) FOURTH END |
| Connection Type | THREADED EXTERNAL TUBE FIRST END BULKHEAD |
| Connection Type | THREADED EXTERNAL TUBE THIRD END |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Connection Type | THREADED EXTERNAL BOSS SECOND END |
| Connection Type | THREADED INTERNAL BOSS FOURTH END |
| Nominal Outside Diameter Tube Accommodated | 0.750 INCHES THIRD END IN |
| Nominal Outside Diameter Tube Accommodated | 0.750 INCHES FIRST END IN |
| Leg Length | 1.430 INCHES NOMINAL SECOND END IN |
| Leg Length | 2.492 INCHES NOMINAL FIRST END IN |
| Leg Length | 1.367 INCHES NOMINAL FOURTH END IN |
| Leg Length | 1.649 INCHES NOMINAL THIRD END IN |
| Nominal Thread Size | 1.062 INCHES FIRST END BULKHEAD IN |
| Nominal Thread Size | 0.500 INCHES FOURTH END IN |
| Nominal Thread Size | 0.562 INCHES SECOND END IN |
| Nominal Thread Size | 1.062 INCHES THIRD END IN |
| Nominal Thread Size | 1.062 INCHES FIRST END IN |
| Seat Angle | 12.0 DEGREES THIRD END |
| Seat Angle | 12.0 DEGREES FIRST END |
| Surface Treatment | ANODIZE OVERALL |
| Thread Class | 3A FIRST END A |
| Thread Class | 3A FIRST END BULKHEAD A |
| Thread Class | 3A SECOND END A |
| Thread Class | 3A THIRD END A |
| Thread Class | 3B FOURTH END |
| Thread Quantity Per Inch | 12 THIRD END |
| Thread Quantity Per Inch | 12 FIRST END |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 65664-09207-101 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| Reference | Meaning |
|---|---|
| 65664-09207-101 | 5/9 Secondary reference Pottar Precision Mfg Corp |
| 65664-09207 | D/9 Drawing number reference only Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
NSN 4730-01-141-2559 is a Cross,tube to Boss, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-141-2559 has 1 manufacturer part number on file: 65664-09207-101 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for 65664-09207-101: Connection Style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END; Connection Style: FLARELESS (TUBE) THIRD END; Connection Style: FLARELESS (TUBE) FIRST END; Connection Style: GASKET SEAL (BOSS) FOURTH END. 30 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.
NSN 4730-01-141-2559 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.