PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-F-83798Elbow,tube to Hose

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 4730-01-314-8818 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-314-8818 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-314-8818. Primary manufacturer part number: MIL-F-83798.
Features
  • Elbow,tube to Hose — FSC 4730
  • Connection Style: GRIPPING (HOSE) SECOND END
  • Material: ALUMINUM ALLOY 2024 OVERALL
  • Flow Angle: 45.0 DEGREES
  • Nondefinitive Spec/std Data: 4 SIZE
  • Specification/standard Data: 81349--83798/2-4L GOVERNMENT SPECIFICATION
  • Thread Series Designator: UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END
  • Nominal Inside Diameter Hose Accommodated: 0.219 INCHES SECOND END IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Aluminum Alloy 2024 Overall construction
General Description

The Elbow,tube to Hose, cataloged under National Stock Number 4730-01-314-8818, 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 Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 2 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
NSN4730-01-314-8818
Primary Part NumberMIL-F-83798
Item NameElbow,tube to Hose
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Connection StyleGRIPPING (HOSE) SECOND END
MaterialALUMINUM ALLOY 2024 OVERALL
Flow Angle45.0 DEGREES
Nondefinitive Spec/std Data4 SIZE
Specification/standard Data81349--83798/2-4L GOVERNMENT SPECIFICATION
Thread Series DesignatorUNIFIED NATIONAL JOINT FINE (UNJF) FIRST END
Nominal Inside Diameter Hose Accommodated0.219 INCHES SECOND END IN
Material Document and ClassificationQQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Operating Pressure1000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Nominal Outside Diameter Hose Accommodated0.496 INCHES SECOND END IN
Furnished Items and Quantity1 HOSE SOCKET
Surface Treatment Document and ClassificationMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Surface TreatmentANODIZE OVERALL
Nominal Thread Size0.438 INCHES FIRST END IN
Seat Angle37.0 DEGREES FIRST END
Media for Which DesignedAERONAUTICAL FLUID SINGLE RESPONSE
Nominal Outside Diameter Tube Accommodated0.250 INCHES FIRST END IN
Maximum Operating Temp250.0 FAHRENHEIT SINGLE RESPONSE DEGF
Leg Length1.383 INCHES NOMINAL SECOND END IN
Leg Length0.324 INCHES NOMINAL FIRST END IN
Thread Class3B FIRST END
Connection TypeTHREADED EXTERNAL HOSE GRIPPING SECOND END
Connection StyleSWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
Connection TypeTHREADED INTERNAL TUBE FIRST END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
4730-00-541-8234 INTERCHANGEABLE
Elbow,tube to Hose
4730-00-559-1600 INTERCHANGEABLE
Elbow,tube to Hose
4730-00-580-8548 INTERCHANGEABLE
Elbow,tube to Hose
4730-00-618-7382 INTERCHANGEABLE
Elbow,tube to Hose
4730-00-652-1802 INTERCHANGEABLE
Elbow,tube to Hose
4730-00-684-6394 INTERCHANGEABLE
Elbow,tube to Hose
4730-00-709-3887 INTERCHANGEABLE
Elbow,tube to Hose
4730-00-813-6923 INTERCHANGEABLE
Elbow,tube to Hose
4730-00-891-1947 INTERCHANGEABLE
Elbow,tube to Hose
4730-00-891-1948 INTERCHANGEABLE
Elbow,tube to Hose
Cross-Reference Index
Part NumberManufacturer
MIL-F-83798 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-83789/2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-83789 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M83798/2-4L Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-83798/2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
678-4SL Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division (USA)
Related Parts
4730-00-541-8234INTERCHANGEABLE
ELBOW,TUBE TO HOSE
4730-00-559-1600INTERCHANGEABLE
ELBOW,TUBE TO HOSE
4730-00-580-8548INTERCHANGEABLE
ELBOW,TUBE TO HOSE
4730-00-618-7382INTERCHANGEABLE
ELBOW,TUBE TO HOSE
4730-00-652-1802INTERCHANGEABLE
ELBOW,TUBE TO HOSE
4730-00-684-6394INTERCHANGEABLE
ELBOW,TUBE TO HOSE
4730-00-709-3887INTERCHANGEABLE
ELBOW,TUBE TO HOSE
4730-00-813-6923INTERCHANGEABLE
ELBOW,TUBE TO HOSE
4730-00-891-1947INTERCHANGEABLE
ELBOW,TUBE TO HOSE
4730-00-891-1948INTERCHANGEABLE
ELBOW,TUBE TO HOSE
4730-01-314-8817INTERCHANGEABLE
ELBOW,TUBE TO HOSE

Frequently Asked Questions

What is NSN 4730-01-314-8818?

NSN 4730-01-314-8818 is a Elbow,tube to Hose, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-314-8818?

NSN 4730-01-314-8818 has 6 cross-referenced part numbers: MIL-F-83798 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-83789/2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-83789 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M83798/2-4L (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-83798/2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 1 more.

What NSN replaces 4730-01-314-8818?

There are 11 known substitutes for 4730-01-314-8818: 4730-00-541-8234, 4730-00-559-1600, 4730-00-580-8548 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-F-83798?

Key specifications for MIL-F-83798: Connection Style: GRIPPING (HOSE) SECOND END; Material: ALUMINUM ALLOY 2024 OVERALL; Flow Angle: 45.0 DEGREES; Nondefinitive Spec/std Data: 4 SIZE. 24 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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