The Inverted Nut,tube Coupling, cataloged under National Stock Number 4730-01-491-7111, 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 Danfoss Power Solutions II, Llc. Government technical data includes 13 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-491-7111 |
| Primary Part Number | 186-1299-7-6 |
| Item Name | Inverted Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Danfoss Power Solutions II, Llc |
| Status | ACTIVE |
| Width Across Flats | 0.6875 INCHES NOMINAL IN |
| Seat Angle in Deg | 45.0 |
| Tube Outside Diameter for Which Designed | 0.384 INCHES NOMINAL IN |
| Style Designator | INVERTED NUT, TUBE, FLARE |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | SAE J512 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Casehardening Indicator | NOT CASEHARDENED |
| Thread Size | 11/16-18 |
| Screw Thread Series Designator | UNS |
| Thread Class | 2A A |
| Material | STEEL |
| Fabrication Method | BAR STOCK, MACHINED |
| Smallest Inside Diameter | 0.375 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 |
|---|---|
| 7-6 040110CA | Sae International Dba Sae International (USA) |
| 186-1299-7-6 PRIMARY | Danfoss Power Solutions II, Llc (USA) |
| Reference | Meaning |
|---|---|
| J512 | 5/1 Secondary reference Sae International Dba Sae International |
| J512 | 5/9 Secondary reference U.S. Government activity |
| 18A1764 REV A | 5/2 Secondary reference U.S. Government activity |
| 1299-7-6 | D/9 Drawing number reference only Danfoss Power Solutions II, Llc |
| 7-6 040110CA | 5/9 Secondary reference U.S. Government activity |
NSN 4730-01-491-7111 is a Inverted Nut,tube Coupling, manufactured by Danfoss Power Solutions II, Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-491-7111 has 2 manufacturer part numbers on file: 7-6 040110CA (Sae International Dba Sae International), 186-1299-7-6 (Danfoss Power Solutions II, Llc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-604-1775. Verify interchangeability with system specifications before substitution.
Key specifications for 186-1299-7-6: Width Across Flats: 0.6875 INCHES NOMINAL IN; Seat Angle in Deg: 45.0; Tube Outside Diameter for Which Designed: 0.384 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.