PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

WWP521Elbow,pipe

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 4730-00-246-9200 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-246-9200 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-246-9200. Primary manufacturer part number: WWP521.
Features
  • Elbow,pipe — FSC 4730
  • Operating Pressure: 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
  • Material: IRON OR STEEL OVERALL
  • Media for Which Designed: WATER-OIL-GAS SECOND RESPONSE
  • Material Document and Classification: ASTM A197 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A216 ASSN STD 2ND MATERIAL RESPONSE OVERALL
  • Surface Treatment: ZINC OVERALL
  • Operating Pressure: 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS
  • Thread Series Designator: NPT ALL ENDS
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Iron or Steel Overall construction
General Description

The Elbow,pipe, cataloged under National Stock Number 4730-00-246-9200, 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 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-246-9200
Primary Part NumberWWP521
Item NameElbow,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusCANCELLED
Operating Pressure150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
MaterialIRON OR STEEL OVERALL
Media for Which DesignedWATER-OIL-GAS SECOND RESPONSE
Material Document and ClassificationASTM A197 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A216 ASSN STD 2ND MATERIAL RESPONSE OVERALL
Surface TreatmentZINC OVERALL
Operating Pressure300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS
Thread Series DesignatorNPT ALL ENDS
Flow Angle45.0 DEGREES
Specification/standard Data81348-WW-P-521 GOVERNMENT SPECIFICATION
Media for Which DesignedAIR THIRD RESPONSE
Maximum Operating Temp500.0 FAHRENHEIT FIRST RESPONSE DEGF
Leg Length0.730 INCHES MINIMUM AND 0.760 INCHES MAXIMUM ALL ENDS IN
Media for Which DesignedSTEAM FIRST RESPONSE
Connection StylePLAIN (PIPE) ALL ENDS
Connection TypeTHREADED INTERNAL PIPE ALL ENDS
Maximum Operating Temp150.0 FAHRENHEIT SECOND RESPONSE DEGF
Nominal Thread Size0.250 INCHES ALL ENDS IN
Nondefinitive Spec/std Data2 TYPE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
4730-00-253-4412 INTERCHANGEABLE
Elbow,pipe
2930-00-363-7338144112 INTERCHANGEABLE
Elbow
H20 Tank Inc U S Motors Div
1730-00-572-7365 INTERCHANGEABLE
Lever,valve Operati
3110-00-899-435368965 INTERCHANGEABLE
Ball,bearing
Hyster-Yale Group, Inc.
Cross-Reference Index
Part NumberManufacturer
WWP521 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
144112 General Motors Llc Dba General Motors Llc (USA)
WWP521 Allied Plumbing Sales Co Inc (USA)
144135 General Motors Corp (USA)
BM11399-92 Demarkus Corp Refrigeration Engineering Corp (USA)
144112 General Motors Corp (USA)
Related Parts
4730-00-253-4412INTERCHANGEABLE
ELBOW,PIPE
2930-00-363-7338INTERCHANGEABLE
ELBOW
144112
1730-00-572-7365INTERCHANGEABLE
LEVER,VALVE OPERATI
3110-00-899-4353INTERCHANGEABLE
BALL,BEARING
68965

Frequently Asked Questions

What is NSN 4730-00-246-9200?

NSN 4730-00-246-9200 is a Elbow,pipe, manufactured by Federal Specifications Promulgated by General Services Administration Washington DC, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-246-9200?

NSN 4730-00-246-9200 has 6 cross-referenced part numbers: WWP521 (Federal Specifications Promulgated by General Services Administration Washington DC), 144112 (General Motors Llc Dba General Motors Llc), WWP521 (Allied Plumbing Sales Co Inc), 144135 (General Motors Corp), BM11399-92 (Demarkus Corp Refrigeration Engineering Corp) and 1 more.

What NSN replaces 4730-00-246-9200?

There are 4 known substitutes for 4730-00-246-9200: 4730-00-253-4412, 2930-00-363-7338, 1730-00-572-7365 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of WWP521?

Key specifications for WWP521: Operating Pressure: 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS; Material: IRON OR STEEL OVERALL; Media for Which Designed: WATER-OIL-GAS SECOND RESPONSE; Material Document and Classification: ASTM A197 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A216 ASSN STD 2ND MATERIAL RESPONSE OVERALL. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-246-9200 still in active supply?

NSN 4730-00-246-9200 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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