PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

403771Elbow,flange to Tube

The Boeing Company Div Legacy Corinth Bgrc · NSN 4730-00-804-5616 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-804-5616 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-804-5616. Primary manufacturer part number: 403771.
Features
  • Elbow,flange to Tube — FSC 4730
  • Material Document and Classification: AMS 4135 ASSN STD SINGLE MATERIAL RESPONSE OVERALLUNABLE TO DECODE
  • Flange Shape: RECTANGULAR WITH HOLES SECOND END
  • Nominal Thickness: 0.200 INCHES SECOND END IN
  • Nominal Length: 1.856 INCHES SECOND END IN
  • Raised Face Nominal Height: 0.315 INCHES SECOND END IN
  • Material: ALUMINUM ALLOY 2014 OVERALLUNABLE TO DECODE
  • Bolt Hole Quantity: 4 SECOND END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Aluminum Alloy 2014 Overallunable to Decode construction
General Description

The Elbow,flange to Tube, cataloged under National Stock Number 4730-00-804-5616, 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 Boeing Company Div Legacy Corinth Bgrc. Government technical data includes 25 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-804-5616
Primary Part Number403771
Item NameElbow,flange to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerThe Boeing Company Div Legacy Corinth Bgrc
StatusACTIVE
Material Document and ClassificationAMS 4135 ASSN STD SINGLE MATERIAL RESPONSE OVERALLUNABLE TO DECODE
Flange ShapeRECTANGULAR WITH HOLES SECOND END
Nominal Thickness0.200 INCHES SECOND END IN
Nominal Length1.856 INCHES SECOND END IN
Raised Face Nominal Height0.315 INCHES SECOND END IN
MaterialALUMINUM ALLOY 2014 OVERALLUNABLE TO DECODE
Bolt Hole Quantity4 SECOND END
Flow Angle90.0 DEGREES
Connection TypeFLANGE SECOND END
Center to Center Nominal Distance Between Bolt Holes Along Length1.700 INCHES SECOND END IN
Nominal Width1.856 INCHES SECOND END IN
Seat Angle25.0 DEGREES FIRST END
Center to Center Nominal Distance Between Bolt Holes Along Width1.700 INCHES SECOND END IN
Connection TypeTHREADED EXTERNAL TUBE FIRST END
Bolt Hole Nominal Diameter0.281 INCHES SECOND END IN
Flange Face DesignRAISED STRAIGHT SECOND END
Nominal Thread Size1.500 INCHES FIRST END IN
Thread Class3A FIRST END A
Nominal Outside Diameter Tube Accommodated1.312 INCHES FIRST ENDUNABLE TO DECODE IN
Thread Series DesignatorUNF FIRST END
Leg Length2.448 INCHES NOMINAL SECOND END IN
Criticality Code JustificationFEAT
Leg Length1.960 INCHES NOMINAL FIRST END IN
Connection StyleINVERTED FLARE (TUBE) FIRST END
Raised Face Nominal Diameter1.285 INCHES SECOND ENDUNABLE TO DECODE IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
2540-01-539-09071643659 INTERCHANGEABLE
Tarpaulin
Crysteel Manufacturing, Inc Dba Crysteel Manufacturing Inc
6510-01-587-8715403771 INTERCHANGEABLE
Dressing,hydrocolloid
Convatec Inc. Div Convatec
Cross-Reference Index
Part NumberManufacturer
403771 Alamo Aircraft, Ltd. (USA)
403771 Triumph Actuation Systems - Connecticut, Llc Dba Triumph Actuation Systems (USA)
403771 PRIMARY The Boeing Company Div Legacy Corinth Bgrc (USA)
403771 Pacific Engineering and Mfg Co (USA)
403771 Turbo Power & Marine System Inc Sub of United Technologies Corp (USA)
403771 General Electric Co Apparatus Sales Division of Apparatus Group (USA)
403771 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
403771 Engineered Machine Builders (USA)
403771 Kwik File Storage Systems Llc (USA)
403771 PRIMARY Lewis Machine, Llc (USA)
Related Parts
2540-01-539-0907INTERCHANGEABLE
TARPAULIN
1643659
6510-01-587-8715INTERCHANGEABLE
DRESSING,HYDROCOLLOID
403771

Frequently Asked Questions

What is NSN 4730-00-804-5616?

NSN 4730-00-804-5616 is a Elbow,flange to Tube, manufactured by The Boeing Company Div Legacy Corinth Bgrc, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-804-5616?

NSN 4730-00-804-5616 has 10 cross-referenced part numbers: 403771 (Alamo Aircraft, Ltd.), 403771 (Triumph Actuation Systems - Connecticut, Llc Dba Triumph Actuation Systems), 403771 (The Boeing Company Div Legacy Corinth Bgrc), 403771 (Pacific Engineering and Mfg Co), 403771 (Turbo Power & Marine System Inc Sub of United Technologies Corp) and 5 more.

What NSN replaces 4730-00-804-5616?

There are 2 known substitutes for 4730-00-804-5616: 2540-01-539-0907, 6510-01-587-8715. Verify interchangeability with system specifications before substitution.

What are the specifications of 403771?

Key specifications for 403771: Material Document and Classification: AMS 4135 ASSN STD SINGLE MATERIAL RESPONSE OVERALLUNABLE TO DECODE; Flange Shape: RECTANGULAR WITH HOLES SECOND END; Nominal Thickness: 0.200 INCHES SECOND END IN; Special Features: CRITICAL FEATURES, TOLERANCES, FIT RESTRICTIONS, MATERIAL PROPERTIES AND MANUFACTURING PROCESS. FAILURE COULD RESULT IN LOSS OR SUBSTANTIAL DAMAGE TO WEAPON SYSTEM, DEATH OR SERIOUS INJURY. 26 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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