PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

WW-U-516 TY1 STASZ09Union,pipe

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 4730-01-083-0240 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-083-0240 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-083-0240. Primary manufacturer part number: WW-U-516 TY1 STASZ09.
Features
  • Union,pipe — FSC 4730
  • Nominal Thread Size: 0.250 INCHES SECOND END IN
  • Connection Style: PLAIN (PIPE) FIRST END
  • Maximum Operating Temp: 400.0 FAHRENHEIT FIRST RESPONSE DEGF
  • Seat Type: GROUND-JOINT
  • Thread Series Designator: NPT FIRST END
  • Coupling Flange Shape: OCTAGON
  • Operating Pressure: 125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy 836 or Copper Alloy 838 or Copper Alloy 844 Overall construction
General Description

The Union,pipe, cataloged under National Stock Number 4730-01-083-0240, 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 Federal Specifications Promulgated by General Services Administration Washington DC. Government technical data includes 15 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-083-0240
Primary Part NumberWW-U-516 TY1 STASZ09
Item NameUnion,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusACTIVE
Nominal Thread Size0.250 INCHES SECOND END IN
Connection StylePLAIN (PIPE) FIRST END
Maximum Operating Temp400.0 FAHRENHEIT FIRST RESPONSE DEGF
Seat TypeGROUND-JOINT
Thread Series DesignatorNPT FIRST END
Coupling Flange ShapeOCTAGON
Operating Pressure125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
Media for Which DesignedSTEAM FIRST RESPONSE
MaterialCOPPER ALLOY 836 OR COPPER ALLOY 838 OR COPPER ALLOY 844 OVERALL
Thread Series DesignatorNPT SECOND END
Nominal Thread Size0.250 INCHES FIRST END IN
Nominal Overall Length1.437 INCHES IN
Material Document and ClassificationASTMB62 ASSN STD 3RD MATERIAL RESPONSE OVERALL
Union Joint LocationFIRST END
Connection TypeTHREADED INTERNAL PIPE FIRST END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
4730-00-189-2592 INTERCHANGEABLE
Union,pipe
4730-00-980-0967342C378H04 INTERCHANGEABLE
Union,tube
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
4730-01-005-6006 INTERCHANGEABLE
Union,pipe
4730-01-073-8113 INTERCHANGEABLE
Union,pipe
Cross-Reference Index
Part NumberManufacturer
WW-U-516 TY1 STASZ09 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
WW-U-516-09 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
61-657-0002 Phelps Dodge Industries Inc Phelps Dodge Brass Co Div Lee Vrought and Cast Fittings Mill (USA)
WW-U-516 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
4730-00-189-2592INTERCHANGEABLE
UNION,PIPE
4730-00-980-0967INTERCHANGEABLE
UNION,TUBE
342C378H04
4730-01-005-6006INTERCHANGEABLE
UNION,PIPE
4730-01-073-8113INTERCHANGEABLE
UNION,PIPE

Frequently Asked Questions

What is NSN 4730-01-083-0240?

NSN 4730-01-083-0240 is a Union,pipe, manufactured by Federal Specifications Promulgated by General Services Administration Washington DC, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-083-0240?

NSN 4730-01-083-0240 has 4 cross-referenced part numbers: WW-U-516 TY1 STASZ09 (Federal Specifications Promulgated by General Services Administration Washington DC), WW-U-516-09 (Federal Specifications Promulgated by General Services Administration Washington DC), 61-657-0002 (Phelps Dodge Industries Inc Phelps Dodge Brass Co Div Lee Vrought and Cast Fittings Mill), WW-U-516 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 4730-01-083-0240?

There are 4 known substitutes for 4730-01-083-0240: 4730-00-189-2592, 4730-00-980-0967, 4730-01-005-6006 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of WW-U-516 TY1 STASZ09?

Key specifications for WW-U-516 TY1 STASZ09: Nominal Thread Size: 0.250 INCHES SECOND END IN; Connection Style: PLAIN (PIPE) FIRST END; Maximum Operating Temp: 400.0 FAHRENHEIT FIRST RESPONSE DEGF; Seat Type: GROUND-JOINT. 15 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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