The Coupling,tube, cataloged under National Stock Number 4730-01-188-5885, 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 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-188-5885 |
| Primary Part Number | 7M555N6 |
| Item Name | Coupling,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 TUBE COUPLING NUT AND 1 JAM NUT |
| Connection Style | PLAIN (TUBE) SECOND END |
| Connection Style | FLARELESS (TUBE) FIRST END |
| Tubing Wall Nominal Thickness for Which Designed | 0.091 INCHES SECOND END IN |
| Nominal Overall Length | 2.125 INCHES IN |
| Connection Type | THREADED EXTERNAL TUBE SECOND END BULKHEAD |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Connection Type | UNTHREADED EXTERNAL TUBE SECOND END |
| Style Designator | SWAGED AND THREADED EXTERNAL |
| Nominal Outside Diameter Tube Accommodated | 0.375 INCHES ALL ENDS IN |
| Nominal Thread Size | 0.562 INCHES SECOND END BULKHEAD IN |
| Nominal Thread Size | 0.562 INCHES FIRST END IN |
| Seat Angle | 12.0 DEGREES FIRST END |
| Thread Class | 3A FIRST END A |
| Thread Class | 3A SECOND END BULKHEAD A |
| Material | PLASTIC, POLYETHYLENE (PP) OVERALL |
| Thread Series Designator | UNF FIRST END |
| Thread Series Designator | UNF SECOND END BULKHEAD |
| 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 |
|---|---|
| 7M555N6 PRIMARY | The Boeing Company Div Defense (USA) |
NSN 4730-01-188-5885 is a Coupling,tube, manufactured by The Boeing Company Div Defense, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-188-5885 has 1 manufacturer part number on file: 7M555N6 (The Boeing Company Div Defense).
Key specifications for 7M555N6: Furnished Items and Quantity: 1 TUBE COUPLING NUT AND 1 JAM NUT; Connection Style: PLAIN (TUBE) SECOND END; Connection Style: FLARELESS (TUBE) FIRST END; Tubing Wall Nominal Thickness for Which Designed: 0.091 INCHES SECOND END IN. 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.