The Locknut,tube Fitting, cataloged under National Stock Number 4730-00-618-8484, 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 Innovation Systems Llc Div Ngis. 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-618-8484 |
| Primary Part Number | 388209 |
| Item Name | Locknut,tube Fitting |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Northrop Grumman Innovation Systems Llc Div Ngis |
| Status | ACTIVE |
| Width Across Flats | 0.803 INCHES MINIMUM AND 0.814 INCHES MAXIMUM IN |
| Packing Recess Diameter | 0.728 INCHES MINIMUM AND 0.738 INCHES MAXIMUM IN |
| Thread Series | UNF |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.562 INCHES IN |
| Nut Height | 0.300 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Nut Style | TUBE FITTING LOCKNUT |
| Thread Class | 3B |
| Thread Quantity Per Inch | 18 |
| Material | STEEL OVERALL |
| Nominal Tube Outside Diameter | 0.480 INCHES IN |
| Packing Recess Depth | 0.037 INCHES MINIMUM AND 0.049 INCHES MAXIMUM 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 |
|---|---|
| 388209 | Northrop Grumman Innovation Systems Llc Div Ngis (USA) |
| Reference | Meaning |
|---|---|
| 388209 | 5/9 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| 388209 | 3/2 Design control — primary reference U.S. Government activity |
| 388209 | 5/9 Secondary reference Schering Laboratories Institutional Sales Dept K-11-3 L-5 |
| 388209 | 5/9 Secondary reference Alliant Techsystems Inc |
| 388209 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
| 388209 | 5/9 Secondary reference Cooper Industries Inc Cooper Petroleum Equipment Div Sunnyvale Operation |
NSN 4730-00-618-8484 is a Locknut,tube Fitting, manufactured by Northrop Grumman Innovation Systems Llc Div Ngis, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-618-8484 has 1 manufacturer part number on file: 388209 (Northrop Grumman Innovation Systems Llc Div Ngis).
Key specifications for 388209: Width Across Flats: 0.803 INCHES MINIMUM AND 0.814 INCHES MAXIMUM IN; Packing Recess Diameter: 0.728 INCHES MINIMUM AND 0.738 INCHES MAXIMUM IN; Thread Series: UNF; Thread Direction: RIGHT-HAND. 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.