The Inverted Nut,tube Coupling, cataloged under National Stock Number 4730-01-294-3284, 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 Metric Machining. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-294-3284 |
| Primary Part Number | 12351126 |
| Item Name | Inverted Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Metric Machining |
| Status | ACTIVE |
| Width Across Flats | 1.060 INCHES NOMINAL IN |
| Seat Angle in Deg | 45.0 |
| Tube Outside Diameter for Which Designed | 0.750 INCHES NOMINAL IN |
| Style Designator | INVERTED NUT, TUBE, FLARE |
| Material Document and Classification | ASTM A276, TYPE 347 ASSN STD 1ST MATERIAL RESPONSE OR QQ-S-763 FED SPEC ALL MATERIAL RESPONSES |
| Thread Direction | RIGHT-HAND |
| Seat Radius | 0.820 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Thread Size | 1.062-12 |
| Screw Thread Series Designator | UN |
| Surface Treatment | PASSIVATE |
| Thread Class | 2A A |
| Material | STEEL COMP 202 OR STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 304 OR STEEL COMP 304L OR STEEL COMP 305 OR STEEL COMP 309 OR STEEL COMP 310 OR STEEL COMP 316 OR STEEL COMP 316L OR STEEL COMP 317 OR STEEL COMP 321 OR STEEL COMP 322 OR STEEL COMP 324 OR STEEL COMP 347 OR STEEL COMP 633 OR STEEL COMP 634 OR STEEL COMP 403 OR STEEL COMP 405 OR STEEL COMP 410 OR STEEL COMP 414 OR STEEL COMP 416 OR STEEL COMP 416SE OR STEEL COMP 420 OR STEEL COMP 430 OR STEEL COMP 430F OR STEEL COMP 430FSE OR STEEL COMP 431 OR STEEL COMP 440A OR STEEL COMP 440B OR STEEL COMP 440C OR STEEL COMP 440F OR STEEL COMP 440FSE OR STEEL COMP 446 A |
| Smallest Inside Diameter | 0.760 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 |
NSN 4730-01-294-3284 is a Inverted Nut,tube Coupling, manufactured by Metric Machining, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-294-3284 has 3 manufacturer part numbers on file: 12351126 (Metric Machining), 12351126 (Amz Alabama Inc.), 12351126 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12351126: Width Across Flats: 1.060 INCHES NOMINAL IN; Seat Angle in Deg: 45.0; Tube Outside Diameter for Which Designed: 0.750 INCHES NOMINAL IN; Style Designator: INVERTED NUT, TUBE, FLARE. 14 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.