PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21767Elbow,pipe to Tube

Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. · NSN 4730-00-231-3985 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-231-3985 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-231-3985. Primary manufacturer part number: 21767.
Features
  • Elbow,pipe to Tube — FSC 4730
  • Leg Length: 0.750 INCHES NOMINAL SECOND END IN
  • Surface Treatment: CADMIUM OVERALL
  • Thread Quantity Per Inch: 27 SECOND END
  • Connection Style: INVERTED FLARE (TUBE) FIRST END
  • Nominal Outside Diameter Tube Accommodated: 0.125 INCHES FIRST END IN
  • Connection Style: PLAIN (PIPE) SECOND END
  • Nominal Thread Size: 0.562 INCHES FIRST END IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy Overall construction
General Description

The Elbow,pipe to Tube, cataloged under National Stock Number 4730-00-231-3985, 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 Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 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
NSN4730-00-231-3985
Primary Part Number21767
Item NameElbow,pipe to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerPratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
StatusACTIVE
Leg Length0.750 INCHES NOMINAL SECOND END IN
Surface TreatmentCADMIUM OVERALL
Thread Quantity Per Inch27 SECOND END
Connection StyleINVERTED FLARE (TUBE) FIRST END
Nominal Outside Diameter Tube Accommodated0.125 INCHES FIRST END IN
Connection StylePLAIN (PIPE) SECOND END
Nominal Thread Size0.562 INCHES FIRST END IN
Leg Length0.625 INCHES NOMINAL FIRST END IN
Thread Series DesignatorUN FIRST END
Connection TypeTHREADED EXTERNAL PIPE SECOND END
Connection TypeTHREADED EXTERNAL TUBE FIRST END
MaterialCOPPER ALLOY OVERALL
Thread Series DesignatorANPT SECOND END
Seat Angle50.0 DEGREES FIRST END
Thread Class3A FIRST END A
Nominal Thread Size0.125 INCHES SECOND END IN
Flow Angle90.0 DEGREES
Nominal Pipe Size Accommodated0.125 INCHES SECOND END IN
Thread Quantity Per Inch32 FIRST END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5915-00-138-5106FA11244 INTERCHANGEABLE
Filter,radio Frequency Interfere
Ems Development Corporation Dba Ems Development Corp
3455-00-222-413319945 INTERCHANGEABLE
Reamer,machine
Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa
2590-00-737-3216453077-A1 INTERCHANGEABLE
Plate Assembly
Trw Inc Trw Commercial Steering Div
6240-01-475-8238F032/841XP/ECO INTERCHANGEABLE
Lamp,fluorescent
Osram Sylvania Inc
Cross-Reference Index
Part NumberManufacturer
21767 Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. (CAN)
21767 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
AN790P2 Aeronautical Standards Group Dept of Navy and Air Force (USA)
Related Parts
5915-00-138-5106INTERCHANGEABLE
FILTER,RADIO FREQUENCY INTERFERE
FA11244
3455-00-222-4133INTERCHANGEABLE
REAMER,MACHINE
19945
2590-00-737-3216INTERCHANGEABLE
PLATE ASSEMBLY
453077-A1
6240-01-475-8238INTERCHANGEABLE
LAMP,FLUORESCENT
F032/841XP/ECO

Frequently Asked Questions

What is NSN 4730-00-231-3985?

NSN 4730-00-231-3985 is a Elbow,pipe to Tube, manufactured by Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp., classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-231-3985?

NSN 4730-00-231-3985 has 3 cross-referenced part numbers: 21767 (Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.), 21767 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), AN790P2 (Aeronautical Standards Group Dept of Navy and Air Force).

What NSN replaces 4730-00-231-3985?

There are 4 known substitutes for 4730-00-231-3985: 5915-00-138-5106, 3455-00-222-4133, 2590-00-737-3216 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21767?

Key specifications for 21767: Leg Length: 0.750 INCHES NOMINAL SECOND END IN; Surface Treatment: CADMIUM OVERALL; Thread Quantity Per Inch: 27 SECOND END; Connection Style: INVERTED FLARE (TUBE) FIRST END. 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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