PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS20823-6KElbow,pipe to Tube

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 4730-00-279-7818 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-279-7818 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-279-7818. Primary manufacturer part number: MS20823-6K.
Features
  • Elbow,pipe to Tube — FSC 4730
  • Nominal Thread Size: 0.250 INCHES SECOND END IN
  • Thread Class: 3A FIRST END A
  • Connection Type: THREADED EXTERNAL TUBE FIRST END
  • Connection Style: PLAIN (PIPE) SECOND END
  • Nominal Pipe Size Accommodated: 0.250 INCHES SECOND END IN
  • Connection Style: FLARED (TUBE) FIRST END
  • Nominal Outside Diameter Tube Accommodated: 0.375 INCHES FIRST END IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Comp 316 Overall construction
General Description

The Elbow,pipe to Tube, cataloged under National Stock Number 4730-00-279-7818, 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 18 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
NSN4730-00-279-7818
Primary Part NumberMS20823-6K
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
Nominal Thread Size0.250 INCHES SECOND END IN
Thread Class3A FIRST END A
Connection TypeTHREADED EXTERNAL TUBE FIRST END
Connection StylePLAIN (PIPE) SECOND END
Nominal Pipe Size Accommodated0.250 INCHES SECOND END IN
Connection StyleFLARED (TUBE) FIRST END
Nominal Outside Diameter Tube Accommodated0.375 INCHES FIRST END IN
Furnished Items and Quantity1 FLARED SLEEVE AND 1 INVERTED NUT
MaterialSTEEL COMP 316 OVERALL
Leg Length0.812 INCHES NOMINAL FIRST END IN
Connection TypeTHREADED EXTERNAL PIPE SECOND END
Material Document and Classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
Seat Angle37.0 DEGREES FIRST END
Thread Series DesignatorUNF FIRST END
Thread Series DesignatorANPT SECOND END
Nominal Thread Size0.562 INCHES FIRST END IN
Leg Length0.844 INCHES NOMINAL SECOND END IN
Flow Angle45.0 DEGREES
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
4730-00-279-7820 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
4730-00-483-0522 INTERCHANGEABLE
Elbow,pipe to Tube
Cross-Reference Index
Part NumberManufacturer
MS20823-6K Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS20823 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
4730-00-279-7820INTERCHANGEABLE
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
4730-00-764-7857INTERCHANGEABLE
ELBOW,PIPE TO TUBE
4730-00-929-3385INTERCHANGEABLE
ELBOW,PIPE TO TUBE

Frequently Asked Questions

What is NSN 4730-00-279-7818?

NSN 4730-00-279-7818 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 4730-00-279-7818?

NSN 4730-00-279-7818 has 2 cross-referenced part numbers: MS20823-6K (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MS20823 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 4730-00-279-7818?

There are 12 known substitutes for 4730-00-279-7818: 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 MS20823-6K?

Key specifications for MS20823-6K: Nominal Thread Size: 0.250 INCHES SECOND END IN; Thread Class: 3A FIRST END A; Connection Type: THREADED EXTERNAL TUBE FIRST END; Connection Style: PLAIN (PIPE) SECOND END. 19 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-279-7818 still in active supply?

NSN 4730-00-279-7818 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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