The Nut,tube Coupling, cataloged under National Stock Number 4730-00-928-3603, 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 Aerofit, Llc. Government technical data includes 19 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-928-3603 |
| Primary Part Number | NAS596-24H |
| Item Name | Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Aerofit, Llc |
| Status | ACTIVE |
| Length to Shoulder | 0.681 INCHES NOMINAL IN |
| Width Across Flats | 1.625 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Largest Outside Diameter | 1.984 INCHES NOMINAL IN |
| Thread Series | UN |
| Material Document and Classification | MIL-S-18732 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Seat Angle | 33.0 DEGREES NOMINAL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.875 INCHES IN |
| Specification/standard Data | 80205-NAS597 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Nut Height | 1.250 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Nut Style | TUBE COUPLING |
| Thread Class | 3B |
| Thread Quantity Per Inch | 12 |
| Material | STEEL COMP 431 OVERALL |
| Fabrication Method | MACHINED |
| Smallest Inside Diameter | 1.520 INCHES NOMINAL IN |
| Nominal Tube Outside Diameter | 1.500 INCHES 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 |
|---|---|
| NAS596-24H | Aerofit, Llc (USA) |
| Reference | Meaning |
|---|---|
| NAS596-24H | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-00-928-3603 is a Nut,tube Coupling, manufactured by Aerofit, Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-928-3603 has 1 manufacturer part number on file: NAS596-24H (Aerofit, Llc).
Key specifications for NAS596-24H: Length to Shoulder: 0.681 INCHES NOMINAL IN; Width Across Flats: 1.625 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Largest Outside Diameter: 1.984 INCHES NOMINAL IN. 19 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.