PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-F-20042Flange,pipe

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 4730-00-541-3204 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-541-3204 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-541-3204. Primary manufacturer part number: MIL-F-20042.
Features
  • Flange,pipe — FSC 4730
  • Socket Diameter: 8.625 INCHES NOMINAL IN
  • Nominal Pipe Size for Which Designed: 8.000 INCHES IN
  • Face Seating Surface Condition: MACHINED
  • Bolt Hole Diameter: 0.688 INCHES NOMINAL IN
  • Bolt Hole Quantity: 14
  • Neck Height: 1.375 INCHES NOMINAL IN
  • Flange Section Style: PLAIN FACE, SOCKET BRAZING NECK
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy construction
General Description

The Flange,pipe, cataloged under National Stock Number 4730-00-541-3204, 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 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 8 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
NSN4730-00-541-3204
Primary Part NumberMIL-F-20042
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
Socket Diameter8.625 INCHES NOMINAL IN
Nominal Pipe Size for Which Designed8.000 INCHES IN
Face Seating Surface ConditionMACHINED
Bolt Hole Diameter0.688 INCHES NOMINAL IN
Bolt Hole Quantity14
Neck Height1.375 INCHES NOMINAL IN
Flange Section StylePLAIN FACE, SOCKET BRAZING NECK
MaterialCOPPER ALLOY
Style DesignatorROUND, ONE BOLT HOLE CIRCLE
Nondefinitive Spec/std DataPR TYPE
Maximum Operating Temp and Media for Which Designed425.0 FAHRENHEIT STEAM AND 425.0 FAHRENHEIT WATER, SALT DEGF
Operating Pressure and Type250.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 250.0 POUNDS PER SQUARE INCH (PSI) SALT WATER MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
Flange Diameter12.375 INCHES NOMINAL IN
Thickness1.312 INCHES NOMINAL IN
Bolt Circle Diameter11.062 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4730-00-088-8802CS4730-0108A058DJ INTERCHANGEABLE
Flange,pipe
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)
4730-00-541-3188CS4730-0108A045DJ INTERCHANGEABLE
Flange,pipe
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)
4730-00-541-3189CS4730-0108A046DJ INTERCHANGEABLE
Flange,pipe
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)
4730-00-541-3190CS4730-0108A047DJ INTERCHANGEABLE
Flange,pipe
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)
4730-00-541-3193 INTERCHANGEABLE
Flange,pipe
4730-00-541-3195CS4730-0108A052DJ INTERCHANGEABLE
Flange,pipe
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)
4730-00-541-3205CS4730-0108A126DJ INTERCHANGEABLE
Flange,pipe
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)
4730-00-541-4740CS4730-0108B053DH INTERCHANGEABLE
Flange,pipe
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)
4730-00-989-7457CS4730-0108A051DJ INTERCHANGEABLE
Flange,pipe
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)
4730-00-989-7458CS4730-0108A054DJ INTERCHANGEABLE
Flange,pipe
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)
Cross-Reference Index
Part NumberManufacturer
MIL-F-20042 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
5000S4823-1385621 Naval Sea Systems Command (USA)
CS4730-0108A059DJ Flagg Stanley G & Co Inc Dba Flagg Brass (USA)
CS4730-0108A059DJ Derbyshire Machine & Tool Co (USA)
M20042-PR250-0800 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILF20042PLAIN250LBCLASSTYPEPR Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
CS4730-0108A059DJ Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA)
CS4730-0108A059DJ Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA)
MIL-PRF-20042 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
5000S4823-1385621 Naval Ship Systems Command (USA)
CS4730-0108A059DJ The Walworth Company (USA)
MIL-F-20042 Naval Sea Systems Command (USA)
Related Parts
4730-00-088-8802INTERCHANGEABLE
FLANGE,PIPE
CS4730-0108A058DJ
4730-00-541-3188INTERCHANGEABLE
FLANGE,PIPE
CS4730-0108A045DJ
4730-00-541-3189INTERCHANGEABLE
FLANGE,PIPE
CS4730-0108A046DJ
4730-00-541-3190INTERCHANGEABLE
FLANGE,PIPE
CS4730-0108A047DJ
4730-00-541-3193INTERCHANGEABLE
FLANGE,PIPE
4730-00-541-3195INTERCHANGEABLE
FLANGE,PIPE
CS4730-0108A052DJ
4730-00-541-3205INTERCHANGEABLE
FLANGE,PIPE
CS4730-0108A126DJ
4730-00-541-4740INTERCHANGEABLE
FLANGE,PIPE
CS4730-0108B053DH
4730-00-989-7457INTERCHANGEABLE
FLANGE,PIPE
CS4730-0108A051DJ
4730-00-989-7458INTERCHANGEABLE
FLANGE,PIPE
CS4730-0108A054DJ
4730-00-989-7461INTERCHANGEABLE
FLANGE,PIPE
CS4730-0108A057DJ
4730-00-989-7462INTERCHANGEABLE
FLANGE,PIPE
CS4730-0108A055DJ

Frequently Asked Questions

What is NSN 4730-00-541-3204?

NSN 4730-00-541-3204 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 4730-00-541-3204?

NSN 4730-00-541-3204 has 12 cross-referenced part numbers: MIL-F-20042 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 5000S4823-1385621 (Naval Sea Systems Command), CS4730-0108A059DJ (Flagg Stanley G & Co Inc Dba Flagg Brass), CS4730-0108A059DJ (Derbyshire Machine & Tool Co), M20042-PR250-0800 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 7 more.

What NSN replaces 4730-00-541-3204?

There are 12 known substitutes for 4730-00-541-3204: 4730-00-088-8802, 4730-00-541-3188, 4730-00-541-3189 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-F-20042?

Key specifications for MIL-F-20042: Socket Diameter: 8.625 INCHES NOMINAL IN; Nominal Pipe Size for Which Designed: 8.000 INCHES IN; Face Seating Surface Condition: MACHINED; Bolt Hole Diameter: 0.688 INCHES NOMINAL IN. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-541-3204 still in active supply?

NSN 4730-00-541-3204 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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