The Coupling Assembly,self-Sealing, cataloged under National Stock Number 4730-01-325-9041, 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 Naval Sea Systems Command. Government technical data includes 15 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 | 4730-01-325-9041 |
| Primary Part Number | 6146878 |
| Item Name | Coupling Assembly,self-Sealing |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Second Leg Length | 1.430 INCHES NOMINAL IN |
| Connection Style | PLAIN SECOND QUICK DISCONNECT END |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL FIRST QUICK DISCONNECT END |
| Connection Type | THREADED EXTERNAL BOSS FIRST QUICK DISCONNECT END |
| Connection Type | THREADED EXTERNAL PIPE SECOND QUICK DISCONNECT END |
| Style Designator | COUPLING ASSEMBLY |
| Material Document and Classification | QQ-S-763 COND A FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Second End Relationship with First End | NOT IDENTICAL |
| Nominal Thread Size | 0.250 INCHES SECOND QUICK DISCONNECT END IN |
| Nominal Thread Size | 1.500 INCHES FIRST QUICK DISCONNECT END IN |
| First Leg Length | 1.490 INCHES NOMINAL IN |
| Thread Class | 3A FIRST QUICK DISCONNECT END A |
| Material | STEEL COMP 304 BODY |
| Thread Series Designator | NPT SECOND QUICK DISCONNECT END |
| Thread Series Designator | UNEF FIRST QUICK DISCONNECT END |
| 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 |
|---|---|
| 6146878 PRIMARY | Naval Sea Systems Command (USA) |
NSN 4730-01-325-9041 is a Coupling Assembly,self-Sealing, manufactured by Naval Sea Systems Command, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-325-9041 has 1 manufacturer part number on file: 6146878 (Naval Sea Systems Command).
Key specifications for 6146878: Second Leg Length: 1.430 INCHES NOMINAL IN; Connection Style: PLAIN SECOND QUICK DISCONNECT END; Connection Style: EXTERNAL SEAT FOR GASKET SEAL FIRST QUICK DISCONNECT END; Connection Type: THREADED EXTERNAL BOSS FIRST QUICK DISCONNECT END. 15 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.