PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-F-18180/1Flange,pipe

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 4730-01-188-1880 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-188-1880 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-188-1880. Primary manufacturer part number: MIL-F-18180/1.
Features
  • Flange,pipe — FSC 4730
  • Nondefinitive Spec/std Data: 40 SCHEDULE AND 150 CLASS AND 9 TABLE AND 2 1/2 SIZE
  • Specification/standard Data: 80204-ANSIB16.5 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD AND 81349-MIL-F-18180/1 GOVERNMENT SPECIFICATION
  • Style Designator: ROUND, ONE BOLT HOLE CIRCLE
  • Material: STEEL
  • Material Document and Classification: ASTM A105 ASSN STD SINGLE MATERIAL RESPONSE
  • Raised Face Diameter: 3.560 INCHES NOMINAL IN
  • Flange Section Style: RAISED FACE, WELDING NECK
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel construction
General Description

The Flange,pipe, cataloged under National Stock Number 4730-01-188-1880, 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 16 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-01-188-1880
Primary Part NumberMIL-F-18180/1
Item NameFlange,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Nondefinitive Spec/std Data40 SCHEDULE AND 150 CLASS AND 9 TABLE AND 2 1/2 SIZE
Specification/standard Data80204-ANSIB16.5 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD AND 81349-MIL-F-18180/1 GOVERNMENT SPECIFICATION
Style DesignatorROUND, ONE BOLT HOLE CIRCLE
MaterialSTEEL
Material Document and ClassificationASTM A105 ASSN STD SINGLE MATERIAL RESPONSE
Raised Face Diameter3.560 INCHES NOMINAL IN
Flange Section StyleRAISED FACE, WELDING NECK
Flange Diameter7.000 INCHES NOMINAL IN
Face Seating Surface ConditionGROUND
Thickness0.880 INCHES NOMINAL IN
Bolt Hole Quantity4
Nominal Pipe Size for Which Designed2.500 INCHES IN
Bolt Circle Diameter5.500 INCHES NOMINAL IN
Bolt Hole Diameter0.750 INCHES NOMINAL IN
Neck Height2.750 INCHES NOMINAL IN
Raised Face Height0.062 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
4730-00-996-02505244 INTERCHANGEABLE
Flange,pipe
Flowserve Inc
4730-01-183-5948 INTERCHANGEABLE
Flange,pipe
4730-01-185-6085 INTERCHANGEABLE
Flange,pipe
4730-01-185-6086 INTERCHANGEABLE
Flange,pipe
4730-01-187-1039 INTERCHANGEABLE
Flange,pipe
4730-01-313-5440 INTERCHANGEABLE
Flange,pipe
Cross-Reference Index
Part NumberManufacturer
MIL-F-18180/1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M18180/1-007A01A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
B16.5 American National Standards Institute Incorporated Dba American National Standards Institute (USA)
Related Parts
4730-00-996-0250INTERCHANGEABLE
FLANGE,PIPE
5244
4730-01-183-5948INTERCHANGEABLE
FLANGE,PIPE
4730-01-185-6085INTERCHANGEABLE
FLANGE,PIPE
4730-01-185-6086INTERCHANGEABLE
FLANGE,PIPE
4730-01-187-1039INTERCHANGEABLE
FLANGE,PIPE
4730-01-313-5440INTERCHANGEABLE
FLANGE,PIPE

Frequently Asked Questions

What is NSN 4730-01-188-1880?

NSN 4730-01-188-1880 is a Flange,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: cancelled.

What are the part numbers for NSN 4730-01-188-1880?

NSN 4730-01-188-1880 has 3 cross-referenced part numbers: MIL-F-18180/1 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M18180/1-007A01A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), B16.5 (American National Standards Institute Incorporated Dba American National Standards Institute).

What NSN replaces 4730-01-188-1880?

There are 6 known substitutes for 4730-01-188-1880: 4730-00-996-0250, 4730-01-183-5948, 4730-01-185-6085 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-F-18180/1?

Key specifications for MIL-F-18180/1: Nondefinitive Spec/std Data: 40 SCHEDULE AND 150 CLASS AND 9 TABLE AND 2 1/2 SIZE; Specification/standard Data: 80204-ANSIB16.5 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD AND 81349-MIL-F-18180/1 GOVERNMENT SPECIFICATION; Style Designator: ROUND, ONE BOLT HOLE CIRCLE; Material: STEEL. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-01-188-1880 still in active supply?

NSN 4730-01-188-1880 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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