The Union,pipe, cataloged under National Stock Number 4730-00-189-2630, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-189-2630 |
| Primary Part Number | MILU18250 |
| Item Name | Union,pipe |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| Status | ACTIVE |
| Surface Treatment | ZINC OVERALL |
| Nominal Thread Size | 0.500 INCHES FIRST END IN |
| Thread Series Designator | NPT ALL ENDS |
| Material | STEEL OVERALL |
| Operating Pressure | 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Specification/standard Data | 81349-MIL-U-18250 GOVERNMENT SPECIFICATION |
| Surface Treatment | ZINC OVERALL |
| Seat Type | GROUND-JOINT |
| Nondefinitive Spec/std Data | XB TYPE |
| Specification/standard Data | 81349-MIL-U-18250 GOVERNMENT SPECIFICATION |
| Nominal Overall Length | 1.930 INCHES IN |
| Nominal Thread Size | 0.500 INCHES FIRST END IN |
| Style Designator | THREADED |
| Connection Style | PLAIN (PIPE) ALL ENDS |
| Style Designator | THREADED |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Material | STEEL OVERALL |
| Thread Series Designator | NPT ALL ENDS |
| Media for Which Designed | STEAM SINGLE RESPONSE |
| Seat Type | GROUND-JOINT |
| Nondefinitive Spec/std Data | XB TYPE |
| Nominal Overall Length | 1.930 INCHES IN |
| Operating Pressure | 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Media for Which Designed | STEAM SINGLE RESPONSE |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| MILU18250 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| ASME B16.39 | The American Society of Mechanical Engineers (USA) |
| ASME B16.39 CLASS 300 NPS 1/2 | The American Society of Mechanical Engineers (USA) |
NSN 4730-00-189-2630 is a Union,pipe, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 4730 (No Item Name Available). Status: active.
NSN 4730-00-189-2630 has 3 cross-referenced part numbers: MILU18250 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), ASME B16.39 (The American Society of Mechanical Engineers), ASME B16.39 CLASS 300 NPS 1/2 (The American Society of Mechanical Engineers).
There are 12 known substitutes for 4730-00-189-2630: 4730-00-189-2598, 4730-00-189-2599, 4730-00-189-2600 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for MILU18250: Surface Treatment: ZINC OVERALL; Nominal Thread Size: 0.500 INCHES FIRST END IN; Thread Series Designator: NPT ALL ENDS; Material: STEEL OVERALL. 24 total characteristics are documented in the Federal Logistics Information System.