PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-PRF-20042EFlange,pipe,blind

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 4730-00-230-8774 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-230-8774 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-230-8774. Primary manufacturer part number: MIL-PRF-20042E.
Features
  • Flange,pipe,blind — FSC 4730
  • Maximum Operating Temp and Media for Which Designed: 150.0 FAHRENHEIT AIR AND 425.0 FAHRENHEIT STEAM AND 150.0 FAHRENHEIT GAS AND 150.0 FAHRENHEIT OIL AND 150.0 FAHRENHEIT WATER DEGF
  • Material Document and Classification: SAE CA922 ASSN STD SINGLE MATERIAL RESPONSE
  • Operating Pressure and Type: 150.0 POUNDS PER SQUARE INCH (PSI) AIR MAXIMUM REQUIRED AND 100.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 150.0 POUNDS PER SQUARE INCH (PSI) GAS MAXIMUM REQUIRED AND 150.0 POUNDS PER SQUARE INCH (PSI) OIL MAXIMUM REQUIRED AND 150.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LBS
  • Material: COPPER ALLOY 922
  • Style Designator: ROUND, ONE BOLT HOLE CIRCLE
  • Face Seating Surface Condition: MACHINED
  • Flange Section Style: PLAIN FACE (BLIND)
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy 922 construction
General Description

The Flange,pipe,blind, cataloged under National Stock Number 4730-00-230-8774, 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 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-230-8774
Primary Part NumberMIL-PRF-20042E
Item NameFlange,pipe,blind
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Maximum Operating Temp and Media for Which Designed150.0 FAHRENHEIT AIR AND 425.0 FAHRENHEIT STEAM AND 150.0 FAHRENHEIT GAS AND 150.0 FAHRENHEIT OIL AND 150.0 FAHRENHEIT WATER DEGF
Material Document and ClassificationSAE CA922 ASSN STD SINGLE MATERIAL RESPONSE
Operating Pressure and Type150.0 POUNDS PER SQUARE INCH (PSI) AIR MAXIMUM REQUIRED AND 100.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 150.0 POUNDS PER SQUARE INCH (PSI) GAS MAXIMUM REQUIRED AND 150.0 POUNDS PER SQUARE INCH (PSI) OIL MAXIMUM REQUIRED AND 150.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LBS
MaterialCOPPER ALLOY 922
Style DesignatorROUND, ONE BOLT HOLE CIRCLE
Face Seating Surface ConditionMACHINED
Flange Section StylePLAIN FACE (BLIND)
Flange Diameter3.562 INCHES NOMINAL IN
Bolt Hole Diameter0.562 INCHES NOMINAL IN
Thickness0.375 INCHES NOMINAL IN
Nominal Pipe Size for Which Designed0.500 INCHES IN
Bolt Hole Quantity3
Bolt Circle Diameter2.438 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4730-00-185-6861 INTERCHANGEABLE
Flange,pipe,blind
4730-00-541-4740CS4730-0108B053DH INTERCHANGEABLE
Flange,pipe
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)
4820-01-626-658540402-401 INTERCHANGEABLE
Nrp,valve,pressure
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
Cross-Reference Index
Part NumberManufacturer
MIL-PRF-20042E Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-F-20042 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-PRF-20042 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
4730-00-185-6861INTERCHANGEABLE
FLANGE,PIPE,BLIND
4730-00-541-4740INTERCHANGEABLE
FLANGE,PIPE
CS4730-0108B053DH
4820-01-626-6585INTERCHANGEABLE
NRP,VALVE,PRESSURE
40402-401

Frequently Asked Questions

What is NSN 4730-00-230-8774?

NSN 4730-00-230-8774 is a Flange,pipe,blind, 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: active.

What are the part numbers for NSN 4730-00-230-8774?

NSN 4730-00-230-8774 has 3 cross-referenced part numbers: MIL-PRF-20042E (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-F-20042 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-PRF-20042 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 4730-00-230-8774?

There are 3 known substitutes for 4730-00-230-8774: 4730-00-185-6861, 4730-00-541-4740, 4820-01-626-6585. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-PRF-20042E?

Key specifications for MIL-PRF-20042E: Maximum Operating Temp and Media for Which Designed: 150.0 FAHRENHEIT AIR AND 425.0 FAHRENHEIT STEAM AND 150.0 FAHRENHEIT GAS AND 150.0 FAHRENHEIT OIL AND 150.0 FAHRENHEIT WATER DEGF; Material Document and Classification: SAE CA922 ASSN STD SINGLE MATERIAL RESPONSE; Operating Pressure and Type: 150.0 POUNDS PER SQUARE INCH (PSI) AIR MAXIMUM REQUIRED AND 100.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 150.0 POUNDS PER SQUARE INCH (PSI) GAS MAXIMUM REQUIRED AND 150.0 POUNDS PER SQUARE INCH (PSI) OIL MAXIMUM REQUIRED AND 150.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LBS; Material: COPPER ALLOY 922. 13 total characteristics are documented in the Federal Logistics Information System.

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