The Inverted Nut,tube Coupling, cataloged under National Stock Number 4730-00-593-0189, 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 U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 13 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 | 4730-00-593-0189 |
| Primary Part Number | 11641083-2 |
| Item Name | Inverted Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Width Across Flats | 0.500 INCHES NOMINAL IN |
| Seat Angle in Deg | 45.0 |
| Tube Outside Diameter for Which Designed | 0.194 INCHES NOMINAL IN |
| Style Designator | INVERTED NUT, TUBE, FLARE |
| Thread Direction | RIGHT-HAND |
| Casehardening Indicator | NOT CASEHARDENED |
| Thread Size | 1/2-20 |
| Screw Thread Series Designator | UNF |
| Surface Treatment | ZINC |
| Thread Class | 2A A |
| Material | STEEL |
| Fabrication Method | BAR STOCK, MACHINED |
| Smallest Inside Diameter | 0.194 INCHES NOMINAL IN |
| 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 |
|---|---|
| 11641083-2 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 4730-00-593-0189 is a Inverted Nut,tube Coupling, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-593-0189 has 1 manufacturer part number on file: 11641083-2 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 11641083-2: Width Across Flats: 0.500 INCHES NOMINAL IN; Seat Angle in Deg: 45.0; Tube Outside Diameter for Which Designed: 0.194 INCHES NOMINAL IN; Style Designator: INVERTED NUT, TUBE, FLARE. 13 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.