PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS20823Elbow,pipe to Tube

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 4730-00-764-7857 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-764-7857 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-764-7857. Primary manufacturer part number: MS20823.
Features
  • Elbow,pipe to Tube — FSC 4730
  • Seat Angle: 37.0 DEGREES FIRST END
  • Connection Style: FLARED (TUBE) FIRST END
  • Material: ALUMINUM ALLOY 2014 OVERALL
  • Thread Series Designator: NPT SECOND END
  • Material Document and Classification: QQ-A-367,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Leg Length: 1.578 INCHES NOMINAL FIRST END IN
  • Connection Type: THREADED EXTERNAL TUBE FIRST END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Aluminum Alloy 2014 Overall construction
General Description

The Elbow,pipe to Tube, cataloged under National Stock Number 4730-00-764-7857, 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 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-764-7857
Primary Part NumberMS20823
Item NameElbow,pipe to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Seat Angle37.0 DEGREES FIRST END
Connection StyleFLARED (TUBE) FIRST END
MaterialALUMINUM ALLOY 2014 OVERALL
Thread Series DesignatorNPT SECOND END
Material Document and ClassificationQQ-A-367,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Leg Length1.578 INCHES NOMINAL FIRST END IN
Connection TypeTHREADED EXTERNAL TUBE FIRST END
Thread Series DesignatorUNIFIED NATIONAL JOINT (UNJ) FIRST END
Surface Treatment Document and ClassificationMIL-F-5509 MIL SPEC SINGLE TREATMENT RESPONSE OUTSIDE
Nominal Outside Diameter Tube Accommodated1.250 INCHES FIRST END IN
Surface Treatment Document and ClassificationMIL-F-5509 MIL SPEC SINGLE TREATMENT RESPONSE INSIDE
Flow Angle45.0 DEGREES
Connection TypeTHREADED EXTERNAL PIPE SECOND END
Leg Length1.656 INCHES NOMINAL SECOND END IN
Specification/standard Data96906-MS20823 GOVERNMENT STANDARD
Thread Class3A FIRST END A
Thread Quantity Per Inch12 FIRST END
Nominal Thread Size1.625 INCHES FIRST END IN
Connection StylePLAIN (PIPE) SECOND END
Nominal Thread Size1.250 INCHES SECOND END IN
Surface TreatmentANODIZE OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4730-00-186-9956 INTERCHANGEABLE
Elbow,pipe to Tube
4730-00-189-3018 INTERCHANGEABLE
Elbow,pipe to Tube
4730-00-189-3019 INTERCHANGEABLE
Elbow,pipe to Tube
4730-00-231-3940AS5196-1616 INTERCHANGEABLE
Elbow,pipe to Tube
Sae International Dba Sae International
4730-00-279-7818 INTERCHANGEABLE
Elbow,pipe to Tube
4730-00-279-7820 INTERCHANGEABLE
Elbow,pipe to Tube
4730-00-279-7826 INTERCHANGEABLE
Elbow,pipe to Tube
4730-00-287-0257 INTERCHANGEABLE
Elbow,pipe to Tube
4730-00-287-0265 INTERCHANGEABLE
Elbow,pipe to Tube
4730-00-336-9435 INTERCHANGEABLE
Elbow,pipe to Tube
Cross-Reference Index
Part NumberManufacturer
MS20823 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS20823-20D Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
4730-00-186-9956INTERCHANGEABLE
ELBOW,PIPE TO TUBE
4730-00-189-3018INTERCHANGEABLE
ELBOW,PIPE TO TUBE
4730-00-189-3019INTERCHANGEABLE
ELBOW,PIPE TO TUBE
4730-00-231-3940INTERCHANGEABLE
ELBOW,PIPE TO TUBE
AS5196-1616
4730-00-279-7818INTERCHANGEABLE
ELBOW,PIPE TO TUBE
4730-00-279-7820INTERCHANGEABLE
ELBOW,PIPE TO TUBE
4730-00-279-7826INTERCHANGEABLE
ELBOW,PIPE TO TUBE
4730-00-287-0257INTERCHANGEABLE
ELBOW,PIPE TO TUBE
4730-00-287-0265INTERCHANGEABLE
ELBOW,PIPE TO TUBE
4730-00-336-9435INTERCHANGEABLE
ELBOW,PIPE TO TUBE
4730-00-483-0522INTERCHANGEABLE
ELBOW,PIPE TO TUBE
4730-00-929-3385INTERCHANGEABLE
ELBOW,PIPE TO TUBE

Frequently Asked Questions

What is NSN 4730-00-764-7857?

NSN 4730-00-764-7857 is a Elbow,pipe to Tube, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-764-7857?

NSN 4730-00-764-7857 has 2 cross-referenced part numbers: MS20823 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MS20823-20D (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 4730-00-764-7857?

There are 12 known substitutes for 4730-00-764-7857: 4730-00-186-9956, 4730-00-189-3018, 4730-00-189-3019 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS20823?

Key specifications for MS20823: Seat Angle: 37.0 DEGREES FIRST END; Connection Style: FLARED (TUBE) FIRST END; Material: ALUMINUM ALLOY 2014 OVERALL; Thread Series Designator: NPT SECOND END. 21 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-764-7857 still in active supply?

NSN 4730-00-764-7857 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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