PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B16.5Flange,pipe

American National Standards Institute Incorporated Dba American National Standards Institute · NSN 4730-01-026-6503 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-026-6503 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-026-6503. Primary manufacturer part number: B16.5.
Features
  • Flange,pipe — FSC 4730
  • Neck Height: 0.375 INCHES NOMINAL IN
  • Material Document and Classification: ASTM A182,GRADE F11 ASSN STD SINGLE MATERIAL RESPONSE
  • Socket Diameter: 1.090 INCHES NOMINAL IN
  • Flange Section Style: RAISED FACE, SOCKET NECK
  • Material: STEEL
  • Operating Pressure and Type: 1500.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED AND 1500.0 POUNDS PER SQUARE INCH (PSI) OIL 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 4730-01-026-6503, 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 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-026-6503
Primary Part NumberB16.5
Item NameFlange,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerAmerican National Standards Institute Incorporated Dba American National Standards Institute
StatusACTIVE
Neck Height0.375 INCHES NOMINAL IN
Material Document and ClassificationASTM A182,GRADE F11 ASSN STD SINGLE MATERIAL RESPONSE
Socket Diameter1.090 INCHES NOMINAL IN
Flange Section StyleRAISED FACE, SOCKET NECK
MaterialSTEEL
Operating Pressure and Type1500.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED AND 1500.0 POUNDS PER SQUARE INCH (PSI) OIL MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
Style DesignatorROUND, ONE BOLT HOLE CIRCLE
Socket Depth0.438 INCHES NOMINAL IN
Reference Number Differentiating CharacteristicsAS DIFFERENTIATED BY MATERIAL
Face Seating Surface ConditionGROUND
Raised Face Height0.250 INCHES NOMINAL IN
Thickness1.000 INCHES NOMINAL IN
Bolt Circle Diameter3.500 INCHES NOMINAL IN
Raised Face Diameter1.688 INCHES NOMINAL IN
Flange Diameter5.125 INCHES NOMINAL IN
Nominal Pipe Size for Which Designed0.750 INCHES IN
Bolt Hole Diameter0.750 INCHES NOMINAL IN
Bolt Hole Quantity4
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5330-00-126-1095EV692B INTERCHANGEABLE
Gasket
Eaton Aerospace, Llc Dba Jackson South
5935-00-228-5862 INTERCHANGEABLE
Connector,plug,electrical
2520-00-377-4507CX111C002 INTERCHANGEABLE
Clutch Assembly,friction
Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
9540-00-555-1081 INTERCHANGEABLE
Angle,structural
5310-01-147-666915534 INTERCHANGEABLE
Nut
Cooper Cameron Corp Cooper Cameron Valves Div
5340-01-287-0350155---0100 AV INTERCHANGEABLE
Plug,vent
Morrison Brothers Co Dba Morrison Brothers Co
6240-01-344-6966120PAR/CAP/FL/120V INTERCHANGEABLE
Lamp,incandescent
Gte Products Corp Sylvania Miniature Lighting Div
5120-01-644-345215534 INTERCHANGEABLE
Key,socket Head Screw
Eklind Tool Co
Cross-Reference Index
Part NumberManufacturer
B16.5 American National Standards Institute Incorporated Dba American National Standards Institute (USA)
155-3/4 ASTMA-1 Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy (USA)
155-3/4 Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy (USA)
B16-5-3-4IN-IPS1500PSI-PP-FLGE American National Standards Institute Incorporated Dba American National Standards Institute (USA)
Related Parts
5330-00-126-1095INTERCHANGEABLE
GASKET
EV692B
5935-00-228-5862INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
2520-00-377-4507INTERCHANGEABLE
CLUTCH ASSEMBLY,FRICTION
CX111C002
9540-00-555-1081INTERCHANGEABLE
ANGLE,STRUCTURAL
5310-01-147-6669INTERCHANGEABLE
NUT
15534
5340-01-287-0350INTERCHANGEABLE
PLUG,VENT
155---0100 AV
6240-01-344-6966INTERCHANGEABLE
LAMP,INCANDESCENT
120PAR/CAP/FL/120V
5120-01-644-3452INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
15534

Frequently Asked Questions

What is NSN 4730-01-026-6503?

NSN 4730-01-026-6503 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 4730-01-026-6503?

NSN 4730-01-026-6503 has 4 cross-referenced part numbers: B16.5 (American National Standards Institute Incorporated Dba American National Standards Institute), 155-3/4 ASTMA-1 (Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy), 155-3/4 (Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy), B16-5-3-4IN-IPS1500PSI-PP-FLGE (American National Standards Institute Incorporated Dba American National Standards Institute).

What NSN replaces 4730-01-026-6503?

There are 8 known substitutes for 4730-01-026-6503: 5330-00-126-1095, 5935-00-228-5862, 2520-00-377-4507 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B16.5?

Key specifications for B16.5: Neck Height: 0.375 INCHES NOMINAL IN; Material Document and Classification: ASTM A182,GRADE F11 ASSN STD SINGLE MATERIAL RESPONSE; Socket Diameter: 1.090 INCHES NOMINAL IN; Flange Section Style: RAISED FACE, SOCKET NECK. 19 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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