The Locknut,tube Fitting, cataloged under National Stock Number 4730-01-666-4534, 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 Sae International Dba Sae International. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-666-4534 |
| Primary Part Number | SAE J1453-3 16-16 520118C |
| Item Name | Locknut,tube Fitting |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Width Across Flats | 1.60 INCHES NOMINAL IN |
| Thread Series | UN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.4375 INCHES IN |
| Nut Height | 0.413 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Nut Style | TUBE FITTING LOCKNUT |
| Thread Class | 2B |
| Thread Quantity Per Inch | 12 |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| J1453-3 16-16 520118C | Sae International Dba Sae International (USA) |
| SAE J1453-3 16-16 520118C PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| SAE J1453-3 16-16 520118C | 5/9 Secondary reference U.S. Government activity |
| J1453-3 16-16 520118C | 5/9 Secondary reference U.S. Government activity |
| 16-16 520118C | 5/9 Secondary reference Sae International Dba Sae International |
| SAE-J1453/3 | 3/1 Design control — primary reference Sae International Dba Sae International |
| J1453-3 | 5/1 Secondary reference Sae International Dba Sae International |
| J1453-3 | 5/9 Secondary reference U.S. Government activity |
| 16-16 520118C | 3/9 Design control — primary reference U.S. Government activity |
NSN 4730-01-666-4534 is a Locknut,tube Fitting, manufactured by Sae International Dba Sae International, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-666-4534 has 2 manufacturer part numbers on file: J1453-3 16-16 520118C (Sae International Dba Sae International), SAE J1453-3 16-16 520118C (Sae International Dba Sae International).
Key specifications for SAE J1453-3 16-16 520118C: Width Across Flats: 1.60 INCHES NOMINAL IN; Thread Series: UN; Thread Direction: RIGHT-HAND; Nominal Thread Size: 1.4375 INCHES 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.