The Union,pipe, cataloged under National Stock Number 4730-00-189-2646, 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 The American Society of Mechanical Engineers. Government technical data includes 27 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 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 | 4730-00-189-2646 |
| Primary Part Number | B16.39 |
| Item Name | Union,pipe |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | The American Society of Mechanical Engineers |
| Status | ACTIVE |
| Surface Treatment | ZINC OVERALL |
| Surface Treatment | ZINC OVERALL |
| Specification/standard Data | 81349-MIL-U-18250 GOVERNMENT SPECIFICATION |
| Nondefinitive Spec/std Data | XD TYPE |
| Reducer Type | CONCENTRIC |
| Nominal Thread Size | 0.500 INCHES ALL ENDS IN |
| Specification/standard Data | 81349-MIL-U-18250 GOVERNMENT SPECIFICATION |
| Style Designator | SCREWED |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Coupling Flange Shape | HEXAGON |
| Operating Pressure | 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Material | STEEL OR IRON OVERALL |
| Seat Type | GROUND-JOINT |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Nominal Overall Length | 1.930 INCHES IN |
| Seat Type | GROUND-JOINT |
| Material | STEEL OR IRON OVERALL |
| Thread Series Designator | NPT ALL ENDS |
| Connection Style | PLAIN (PIPE) ALL ENDS |
| Nominal Overall Length | 1.930 INCHES IN |
| Operating Pressure | 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Thread Size | 0.500 INCHES ALL ENDS IN |
| Nondefinitive Spec/std Data | XD TYPE |
| Thread Series Designator | NPT ALL ENDS |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Style Designator | SCREWED |
| Coupling Flange Shape | HEXAGON |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4730-00-189-2646 is a Union,pipe, manufactured by The American Society of Mechanical Engineers, classified under FSC 4730 (No Item Name Available). Status: active.
NSN 4730-00-189-2646 has 2 cross-referenced part numbers: B16.39 (The American Society of Mechanical Engineers), MILU18250 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).
There are 12 known substitutes for 4730-00-189-2646: 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 B16.39: Surface Treatment: ZINC OVERALL; Surface Treatment: ZINC OVERALL; Specification/standard Data: 81349-MIL-U-18250 GOVERNMENT SPECIFICATION; Nondefinitive Spec/std Data: XD TYPE. 27 total characteristics are documented in the Federal Logistics Information System.