PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILU18250Union,pipe

Noland Company Dba Winsupply Manassas VA Co. · NSN 4730-00-189-2600 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-189-2600 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-189-2600. Primary manufacturer part number: MILU18250.
Features
  • Union,pipe — FSC 4730
  • Specification/standard Data: 81349-MIL-U-18250 GOVERNMENT SPECIFICATION
  • Operating Pressure: 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
  • Style Designator: SCREWED
  • Seat Type: BEVELED
  • Nominal Overall Length: 2.795 INCHES IN
  • Operating Pressure: 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
  • Nominal Thread Size: 1.250 INCHES ALL ENDS IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Overall construction
General Description

The Union,pipe, cataloged under National Stock Number 4730-00-189-2600, 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 Noland Company Dba Winsupply Manassas VA Co.. Government technical data includes 26 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-189-2600
Primary Part NumberMILU18250
Item NameUnion,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerNoland Company Dba Winsupply Manassas VA Co.
StatusCANCELLED
Specification/standard Data81349-MIL-U-18250 GOVERNMENT SPECIFICATION
Operating Pressure300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Style DesignatorSCREWED
Seat TypeBEVELED
Nominal Overall Length2.795 INCHES IN
Operating Pressure300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Nominal Thread Size1.250 INCHES ALL ENDS IN
Coupling Flange ShapeHEXAGON
Nominal Overall Length2.795 INCHES IN
Specification/standard Data81349-MIL-U-18250 GOVERNMENT SPECIFICATION
Nondefinitive Spec/std DataXA TYPE
Reducer TypeCONCENTRIC
MaterialSTEEL OVERALL
Media for Which DesignedSTEAM SINGLE RESPONSE
Media for Which DesignedSTEAM SINGLE RESPONSE
Nondefinitive Spec/std DataXA TYPE
Nominal Thread Size1.250 INCHES ALL ENDS IN
Connection TypeTHREADED INTERNAL PIPE ALL ENDS
Maximum Operating Temp218.0 CELSIUS SINGLE RESPONSE DEGC
Connection StylePLAIN (PIPE) ALL ENDS
Style DesignatorSCREWED
Seat TypeBEVELED
Thread Series DesignatorNPT ALL ENDS
Coupling Flange ShapeHEXAGON
Thread Series DesignatorNPT ALL ENDS
MaterialSTEEL OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4730-00-189-2596 INTERCHANGEABLE
Union,pipe
4730-00-189-2597 INTERCHANGEABLE
Union,pipe
4730-00-189-2598 INTERCHANGEABLE
Union,pipe
4730-00-189-2599 INTERCHANGEABLE
Union,pipe
4730-00-189-2601 INTERCHANGEABLE
Union,pipe
4730-00-189-26021631-400 INTERCHANGEABLE
Union,pipe
Flaton Machine Works Inc.
4730-00-189-2605 INTERCHANGEABLE
Union,pipe
4730-00-189-2606 INTERCHANGEABLE
Union,pipe
4730-00-189-2629 INTERCHANGEABLE
Union,pipe
4730-00-189-2630 INTERCHANGEABLE
Union,pipe
Cross-Reference Index
Part NumberManufacturer
MILU18250 Noland Company Dba Winsupply Manassas VA Co. (USA)
MILU18250 Samuel Levine Plumbing and Heating Supplies, Inc. Div Slphs Inc (USA)
MILU18250TYPEXA Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILU18250 Esco Inc (USA)
Related Parts
4730-00-189-2596INTERCHANGEABLE
UNION,PIPE
4730-00-189-2597INTERCHANGEABLE
UNION,PIPE
4730-00-189-2598INTERCHANGEABLE
UNION,PIPE
4730-00-189-2599INTERCHANGEABLE
UNION,PIPE
4730-00-189-2601INTERCHANGEABLE
UNION,PIPE
4730-00-189-2602INTERCHANGEABLE
UNION,PIPE
1631-400
4730-00-189-2605INTERCHANGEABLE
UNION,PIPE
4730-00-189-2606INTERCHANGEABLE
UNION,PIPE
4730-00-189-2629INTERCHANGEABLE
UNION,PIPE
4730-00-189-2630INTERCHANGEABLE
UNION,PIPE
4730-00-189-2635INTERCHANGEABLE
UNION,PIPE
4730-00-189-2638INTERCHANGEABLE
UNION,PIPE

Frequently Asked Questions

What is NSN 4730-00-189-2600?

NSN 4730-00-189-2600 is a Union,pipe, manufactured by Noland Company Dba Winsupply Manassas VA Co., classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-189-2600?

NSN 4730-00-189-2600 has 4 cross-referenced part numbers: MILU18250 (Noland Company Dba Winsupply Manassas VA Co.), MILU18250 (Samuel Levine Plumbing and Heating Supplies, Inc. Div Slphs Inc), MILU18250TYPEXA (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILU18250 (Esco Inc).

What NSN replaces 4730-00-189-2600?

There are 12 known substitutes for 4730-00-189-2600: 4730-00-189-2596, 4730-00-189-2597, 4730-00-189-2598 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MILU18250?

Key specifications for MILU18250: Specification/standard Data: 81349-MIL-U-18250 GOVERNMENT SPECIFICATION; Operating Pressure: 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Style Designator: SCREWED; Seat Type: BEVELED. 26 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-189-2600 still in active supply?

NSN 4730-00-189-2600 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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