The Union,pipe, cataloged under National Stock Number 4730-00-189-2638, 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 American National Standards Institute Incorporated Dba American National Standards Institute. Government technical data includes 26 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: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4730-00-189-2638 |
| Primary Part Number | B16.39 |
| Item Name | Union,pipe |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | American National Standards Institute Incorporated Dba American National Standards Institute |
| Status | CANCELLED |
| Specification/standard Data | 81349-MIL-U-18250 GOVERNMENT SPECIFICATION |
| Surface Treatment | ZINC OVERALL |
| Operating Pressure | 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Overall Length | 3.010 INCHES IN |
| Nondefinitive Spec/std Data | XB TYPE |
| Style Designator | SCREWED |
| Nominal Thread Size | 1.500 INCHES ALL ENDS IN |
| Material | STEEL OR IRON OVERALL |
| Thread Series Designator | NPT ALL ENDS |
| Reducer Type | CONCENTRIC |
| Coupling Flange Shape | HEXAGON |
| Nominal Thread Size | 1.500 INCHES ALL ENDS IN |
| Surface Treatment | ZINC OVERALL |
| Style Designator | SCREWED |
| Maximum Operating Temp | 218.3 CELSIUS SINGLE RESPONSE DEGC |
| Connection Style | PLAIN (PIPE) ALL ENDS |
| Seat Type | GROUND-JOINT |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Nominal Overall Length | 3.010 INCHES IN |
| Seat Type | GROUND-JOINT |
| Nondefinitive Spec/std Data | XB TYPE |
| Coupling Flange Shape | HEXAGON |
| Specification/standard Data | 81349-MIL-U-18250 GOVERNMENT SPECIFICATION |
| Operating Pressure | 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Material | STEEL OR IRON OVERALL |
| Thread Series Designator | NPT ALL ENDS |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
NSN 4730-00-189-2638 is a Union,pipe, manufactured by American National Standards Institute Incorporated Dba American National Standards Institute, classified under FSC 4730 (No Item Name Available). Status: cancelled.
NSN 4730-00-189-2638 has 2 cross-referenced part numbers: B16.39 (American National Standards Institute Incorporated Dba American National Standards Institute), MILU18250 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).
There are 12 known substitutes for 4730-00-189-2638: 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: Specification/standard Data: 81349-MIL-U-18250 GOVERNMENT SPECIFICATION; Surface Treatment: ZINC OVERALL; Operating Pressure: 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Nominal Overall Length: 3.010 INCHES IN. 26 total characteristics are documented in the Federal Logistics Information System.
NSN 4730-00-189-2638 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.