PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AMSE B16.11Elbow,pipe

The American Society of Mechanical Engineers · NSN 4730-00-249-3979 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-249-3979 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-249-3979. Primary manufacturer part number: AMSE B16.11.
Features
  • Elbow,pipe — FSC 4730
  • Material Document and Classification: MIL-S-872,CL A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Flow Angle: 90.0 DEGREES
  • Media for Which Designed: WATER-OIL-GAS SECOND RESPONSE
  • Material: STEEL OVERALL
  • Media for Which Designed: STEAM FIRST RESPONSE
  • Operating Pressure: 600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
  • Pipe Wall Thickness Designation for Which Designed: SCHEDULE 40 ALL ENDS
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Overall construction
General Description

The Elbow,pipe, cataloged under National Stock Number 4730-00-249-3979, 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 The American Society of Mechanical Engineers. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-249-3979
Primary Part NumberAMSE B16.11
Item NameElbow,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerThe American Society of Mechanical Engineers
StatusACTIVE
Material Document and ClassificationMIL-S-872,CL A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Flow Angle90.0 DEGREES
Media for Which DesignedWATER-OIL-GAS SECOND RESPONSE
MaterialSTEEL OVERALL
Media for Which DesignedSTEAM FIRST RESPONSE
Operating Pressure600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
Pipe Wall Thickness Designation for Which DesignedSCHEDULE 40 ALL ENDS
Connection StyleSOCKET (PIPE) ALL ENDS
Maximum Operating Temp454.0 FAHRENHEIT FIRST RESPONSE DEGF
Leg Length1.562 INCHES NOMINAL ALL ENDS IN
Nominal Pipe Size Accommodated1.250 INCHES ALL ENDS IN
Connection TypeUNTHREADED INTERNAL PIPE ALL ENDS
Maximum Operating Temp218.0 FAHRENHEIT SECOND RESPONSE DEGF
Operating Pressure750.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
4730-00-249-3974 INTERCHANGEABLE
Elbow,pipe
4730-00-249-3976 INTERCHANGEABLE
Elbow,pipe
4730-00-249-3977 INTERCHANGEABLE
Elbow,pipe
4730-00-249-3980 INTERCHANGEABLE
Elbow,pipe
4730-00-249-3981 INTERCHANGEABLE
Elbow,pipe
4730-00-257-2145 INTERCHANGEABLE
Tee,pipe
4730-00-257-2146 INTERCHANGEABLE
Tee,pipe
4730-00-257-2148 INTERCHANGEABLE
Tee,pipe
4730-00-825-9917240 3/8 INCH INTERCHANGEABLE
Elbow,pipe
Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy
4730-01-683-6462 INTERCHANGEABLE
Tee,pipe
Cross-Reference Index
Part NumberManufacturer
AMSE B16.11 The American Society of Mechanical Engineers (USA)
B16-11-1952TABLE1SCHEDULE40 Aeronautical Standards Group Dept of Navy and Air Force (USA)
A314491-6 Naval Air Warfare Center Aircraft Division Joint Base Jbmdl (USA)
5000S4823-64496 Naval Ship Systems Command (USA)
Related Parts
4730-00-249-3974INTERCHANGEABLE
ELBOW,PIPE
4730-00-249-3976INTERCHANGEABLE
ELBOW,PIPE
4730-00-249-3977INTERCHANGEABLE
ELBOW,PIPE
4730-00-249-3980INTERCHANGEABLE
ELBOW,PIPE
4730-00-249-3981INTERCHANGEABLE
ELBOW,PIPE
4730-00-257-2145INTERCHANGEABLE
TEE,PIPE
4730-00-257-2146INTERCHANGEABLE
TEE,PIPE
4730-00-257-2148INTERCHANGEABLE
TEE,PIPE
4730-00-825-9917INTERCHANGEABLE
ELBOW,PIPE
240 3/8 INCH
4730-01-683-6462INTERCHANGEABLE
TEE,PIPE
4730-01-683-6675INTERCHANGEABLE
TEE,PIPE

Frequently Asked Questions

What is NSN 4730-00-249-3979?

NSN 4730-00-249-3979 is a Elbow,pipe, manufactured by The American Society of Mechanical Engineers, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-249-3979?

NSN 4730-00-249-3979 has 4 cross-referenced part numbers: AMSE B16.11 (The American Society of Mechanical Engineers), B16-11-1952TABLE1SCHEDULE40 (Aeronautical Standards Group Dept of Navy and Air Force), A314491-6 (Naval Air Warfare Center Aircraft Division Joint Base Jbmdl), 5000S4823-64496 (Naval Ship Systems Command).

What NSN replaces 4730-00-249-3979?

There are 11 known substitutes for 4730-00-249-3979: 4730-00-249-3974, 4730-00-249-3976, 4730-00-249-3977 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AMSE B16.11?

Key specifications for AMSE B16.11: Material Document and Classification: MIL-S-872,CL A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Flow Angle: 90.0 DEGREES; Media for Which Designed: WATER-OIL-GAS SECOND RESPONSE; Material: STEEL OVERALL. 14 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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