The Inverted Nut,tube Coupling, cataloged under National Stock Number 4730-01-539-9908, 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 Graco High Pressure Equipment Inc. Dba High Pressure Equipment Company. Government technical data includes 10 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 | 4730-01-539-9908 |
| Primary Part Number | 20-2LM9 |
| Item Name | Inverted Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Graco High Pressure Equipment Inc. Dba High Pressure Equipment Company |
| Status | ACTIVE |
| Width Across Flats | 0.875 INCHES NOMINAL IN |
| Tube Outside Diameter for Which Designed | 0.562 INCHES NOMINAL IN |
| Style Designator | INVERTED NUT, TUBE, FLARE |
| Thread Direction | RIGHT-HAND |
| Seat Radius | 0.406 INCHES NOMINAL IN |
| Thread Size | 0.812 |
| Screw Thread Series Designator | UN |
| Thread Class | 2A A |
| Material | STEEL CORROSION RESISTING |
| Smallest Inside Diameter | 0.562 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 |
|---|---|
| 20-2LM9 PRIMARY | Graco High Pressure Equipment Inc. Dba High Pressure Equipment Company (USA) |
NSN 4730-01-539-9908 is a Inverted Nut,tube Coupling, manufactured by Graco High Pressure Equipment Inc. Dba High Pressure Equipment Company, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-539-9908 has 1 manufacturer part number on file: 20-2LM9 (Graco High Pressure Equipment Inc. Dba High Pressure Equipment Company).
Key specifications for 20-2LM9: Width Across Flats: 0.875 INCHES NOMINAL IN; Tube Outside Diameter for Which Designed: 0.562 INCHES NOMINAL IN; Style Designator: INVERTED NUT, TUBE, FLARE; Overall Length: 1.062 INCHES NOMINAL IN. 10 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.