PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B16-5-1953TABLE21Flange,pipe

American National Standards Institute Incorporated Dba American National Standards Institute · NSN 4730-00-235-4081 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-235-4081 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-235-4081. Primary manufacturer part number: B16-5-1953TABLE21.
Features
  • Flange,pipe — FSC 4730
  • Material: STEEL
  • Face Seating Surface Condition: MACHINED
  • Flange Section Style: RAISED FACE, RAISED NECK
  • Bolt Circle Diameter: 7.000 INCHES NOMINAL IN
  • Maximum Operating Temp and Media for Which Designed: 500.0 FAHRENHEIT STEAM DEGF
  • Operating Pressure and Type: 150.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
  • Style Designator: ROUND, ONE BOLT HOLE CIRCLE
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel construction
General Description

The Flange,pipe, cataloged under National Stock Number 4730-00-235-4081, 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 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-235-4081
Primary Part NumberB16-5-1953TABLE21
Item NameFlange,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerAmerican National Standards Institute Incorporated Dba American National Standards Institute
StatusACTIVE
MaterialSTEEL
Face Seating Surface ConditionMACHINED
Flange Section StyleRAISED FACE, RAISED NECK
Bolt Circle Diameter7.000 INCHES NOMINAL IN
Maximum Operating Temp and Media for Which Designed500.0 FAHRENHEIT STEAM DEGF
Operating Pressure and Type150.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
Style DesignatorROUND, ONE BOLT HOLE CIRCLE
Specification/standard Data80204-ASA B16.5,TABLES 13 AND 14 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Raised Face Height0.062 INCHES NOMINAL IN
Bolt Hole Quantity8
Thickness0.875 INCHES NOMINAL IN
Flange Diameter8.500 INCHES NOMINAL IN
Neck Height0.312 INCHES NOMINAL IN
Raised Face Diameter5.500 INCHES NOMINAL IN
Nominal Pipe Size for Which Designed3.500 INCHES IN
Bolt Hole Diameter0.750 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
4730-00-235-4075 INTERCHANGEABLE
Flange,pipe
4730-00-235-4077 INTERCHANGEABLE
Flange,pipe
4730-00-235-4078 INTERCHANGEABLE
Flange,pipe
4730-00-235-4082 INTERCHANGEABLE
Flange,pipe
4730-00-257-0124 INTERCHANGEABLE
Flange,pipe
Cross-Reference Index
Part NumberManufacturer
B16-5-1953TABLE21 American National Standards Institute Incorporated Dba American National Standards Institute (USA)
Related Parts
4730-00-235-4075INTERCHANGEABLE
FLANGE,PIPE
4730-00-235-4077INTERCHANGEABLE
FLANGE,PIPE
4730-00-235-4078INTERCHANGEABLE
FLANGE,PIPE
4730-00-235-4082INTERCHANGEABLE
FLANGE,PIPE
4730-00-257-0124INTERCHANGEABLE
FLANGE,PIPE

Frequently Asked Questions

What is NSN 4730-00-235-4081?

NSN 4730-00-235-4081 is a Flange,pipe, manufactured by American National Standards Institute Incorporated Dba American National Standards Institute, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-235-4081?

NSN 4730-00-235-4081 has 1 cross-referenced part number: B16-5-1953TABLE21 (American National Standards Institute Incorporated Dba American National Standards Institute).

What NSN replaces 4730-00-235-4081?

There are 5 known substitutes for 4730-00-235-4081: 4730-00-235-4075, 4730-00-235-4077, 4730-00-235-4078 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B16-5-1953TABLE21?

Key specifications for B16-5-1953TABLE21: Material: STEEL; Face Seating Surface Condition: MACHINED; Flange Section Style: RAISED FACE, RAISED NECK; Bolt Circle Diameter: 7.000 INCHES NOMINAL IN. 16 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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