The Inverted Nut,tube Coupling, cataloged under National Stock Number 4730-00-720-1035, 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 Northrop Grumman Systems Corporation. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-720-1035 |
| Primary Part Number | GF11A12A |
| Item Name | Inverted Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Width Across Flats | 1.000 INCHES NOMINAL IN |
| Seat Angle in Deg | 37.0 |
| Tube Outside Diameter for Which Designed | 0.750 INCHES NOMINAL IN |
| Style Designator | INVERTED NUT, TUBE, FLARE |
| Material Document and Classification | QQ-A-225/8, ALLOY 6061, T6 FED SPEC SINGLE MATERIAL RESPONSE |
| Thread Direction | RIGHT-HAND |
| Casehardening Indicator | NOT CASEHARDENED |
| Thread Size | 1-1/16-12 |
| Screw Thread Series Designator | UN |
| Thread Class | 3A A |
| Material | ALUMINUM ALLOY 6061 |
| Fabrication Method | BAR STOCK, MACHINED |
| Smallest Inside Diameter | 0.607 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 |
|---|---|
| GF11A12A PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| GF11A | D/9 Drawing number reference only Northrop Grumman Systems Corporation |
NSN 4730-00-720-1035 is a Inverted Nut,tube Coupling, manufactured by Northrop Grumman Systems Corporation, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-720-1035 has 1 manufacturer part number on file: GF11A12A (Northrop Grumman Systems Corporation).
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-253-8596, 4730-01-319-7570. Verify interchangeability with system specifications before substitution.
Key specifications for GF11A12A: Width Across Flats: 1.000 INCHES NOMINAL IN; Seat Angle in Deg: 37.0; Tube Outside Diameter for Which Designed: 0.750 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.