The Coupling Half,self-Sealing, cataloged under National Stock Number 4730-01-072-7454, 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 Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-072-7454 |
| Primary Part Number | TB155S4-4D |
| Item Name | Coupling Half,self-Sealing |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution |
| Status | ACTIVE |
| Connection Style | FLARED ALL ENDS |
| Bolt Circle Nominal Diameter | 1.440 INCHES IN |
| Connection Type | THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION |
| Style Designator | MALE COUPLING HALF |
| Bolt Hole Nominal Diameter | 0.201 INCHES IN |
| Operating Pressure | 30000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Mounting Flange Location | SECOND LEG |
| Features Provided | SELF-SEALING |
| Basic Shape Style | ROUND MOUNTING FLANGE |
| Nominal Thread Size | 0.437 INCHES ALL ENDS IN |
| Seat Angle | 37.0 DEGREES LOCATION NOT OTHERWISE SPECIFIED |
| Nominal Outside Diameter | 1.810 INCHES IN |
| Bolt Hole Quantity | 6 |
| Media for Which Designed | HYDRAULIC FLUID, PETROLEUM BASE SINGLE RESPONSE |
| Thread Class | 3A ALL ENDS A |
| Material | ALUMINUM ALLOY BODY |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS |
| Nominal Thickness | 0.125 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 |
|---|---|
| 68A4D182-1 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| 44104-04B-N1 | Parker-Hannifin Corporation Div Stratoflex Products Division Coupling Business Unit (USA) |
| TB155S4-4D PRIMARY | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA) |
NSN 4730-01-072-7454 is a Coupling Half,self-Sealing, manufactured by Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-072-7454 has 3 manufacturer part numbers on file: 68A4D182-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 44104-04B-N1 (Parker-Hannifin Corporation Div Stratoflex Products Division Coupling Business Unit), TB155S4-4D (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution).
Key specifications for TB155S4-4D: Connection Style: FLARED ALL ENDS; Bolt Circle Nominal Diameter: 1.440 INCHES IN; Connection Type: THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION; Style Designator: MALE COUPLING HALF. 18 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.