The Inverted Nut,tube Coupling, cataloged under National Stock Number 4730-00-674-9218, 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 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-674-9218 |
| Primary Part Number | S6110-21112-000 |
| Item Name | Inverted Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Tube Outside Diameter for Which Designed | 1.000 INCHES NOMINAL IN |
| Material Document and Classification | MIL-T-6736 MIL SPEC SINGLE MATERIAL RESPONSE |
| Thread Direction | RIGHT-HAND |
| Casehardening Indicator | NOT CASEHARDENED |
| Thread Size | 1.500-20 |
| Screw Thread Series Designator | UNEF |
| Surface Treatment | CADMIUM |
| Thread Class | 3A A |
| Material | STEEL COMP 4130 |
| Fabrication Method | BAR STOCK, MACHINED |
| 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 |
|---|---|
| S6110-21112 | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| S6110-21112-000 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
NSN 4730-00-674-9218 is a Inverted Nut,tube Coupling, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-674-9218 has 2 manufacturer part numbers on file: S6110-21112 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), S6110-21112-000 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for S6110-21112-000: Tube Outside Diameter for Which Designed: 1.000 INCHES NOMINAL IN; Material Document and Classification: MIL-T-6736 MIL SPEC SINGLE MATERIAL RESPONSE; Thread Direction: RIGHT-HAND; Casehardening Indicator: NOT CASEHARDENED. 10 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.