The Insert,tube Fitting, cataloged under National Stock Number 4730-00-059-5053, 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 Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division. Government technical data includes 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-059-5053 |
| Primary Part Number | 4T23U1B |
| Item Name | Insert,tube Fitting |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division |
| Status | ACTIVE |
| Style Designator | PLAIN |
| Sleeve Outside Diameter | 0.170 INCHES NOMINAL IN |
| Tube Inside Diameter for Which Designed | 0.172 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Material | COPPER ALLOY |
| Flange Outside Diameter | 0.232 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 |
|---|---|
| 4T23U1B PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division (USA) |
| Reference | Meaning |
|---|---|
| 4T23U1B | 5/9 Secondary reference U.S. Government activity |
| 4T23U1B | 5/9 Secondary reference Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters |
NSN 4730-00-059-5053 is a Insert,tube Fitting, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-059-5053 has 1 manufacturer part number on file: 4T23U1B (Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division).
Key specifications for 4T23U1B: Style Designator: PLAIN; Sleeve Outside Diameter: 0.170 INCHES NOMINAL IN; Tube Inside Diameter for Which Designed: 0.172 INCHES NOMINAL IN; Casehardening Indicator: NOT CASEHARDENED. 6 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.