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 4730-00-684-6394 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-684-6394 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-684-6394. Primary manufacturer part number: MIL-F-83798.
Features
  • Elbow,tube to Hose — FSC 4730
  • Material: ALUMINUM ALLOY OVERALL
  • Nominal Thread Size: 0.750 INCHES FIRST END IN
  • Leg Length: 0.938 INCHES NOMINAL FIRST END IN
  • Furnished Items and Quantity: 1 LONG COUPLING NUT
  • Media for Which Designed: FLUID SINGLE RESPONSE
  • Seat Angle: 37.0 DEGREES FIRST END
  • Nominal Inside Diameter Hose Accommodated: 0.438 INCHES SECOND END IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Aluminum Alloy Overall construction
General Description

The Elbow,tube to Hose, cataloged under National Stock Number 4730-00-684-6394, 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 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 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
NSN4730-00-684-6394
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
MaterialALUMINUM ALLOY OVERALL
Nominal Thread Size0.750 INCHES FIRST END IN
Leg Length0.938 INCHES NOMINAL FIRST END IN
Furnished Items and Quantity1 LONG COUPLING NUT
Media for Which DesignedFLUID SINGLE RESPONSE
Seat Angle37.0 DEGREES FIRST END
Nominal Inside Diameter Hose Accommodated0.438 INCHES SECOND END IN
Connection TypeTHREADED INTERNAL TUBE FIRST END
Surface TreatmentANODIZE ELBOW
Connection StyleSWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
Thread Series DesignatorUNF FIRST END
Nominal Outside Diameter Hose Accommodated0.641 INCHES SECOND END IN
Connection TypeTHREADED EXTERNAL HOSE GRIPPING SECOND END
Leg Length1.090 INCHES NOMINAL SECOND END IN
Connection StyleGRIPPING NIPPLE (NOSE) SECOND END
Nominal Outside Diameter Tube Accommodated0.500 INCHES FIRST END IN
Flow Angle45.0 DEGREES
Thread Class3B 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
4730-00-709-3887 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
4730-01-314-8817 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
M83798/2-8 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
8846-8D Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA)
678-8D 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
4730-00-709-3887INTERCHANGEABLE
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
4730-01-314-8818INTERCHANGEABLE
ELBOW,TUBE TO HOSE

Frequently Asked Questions

What is NSN 4730-00-684-6394?

NSN 4730-00-684-6394 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 4730-00-684-6394?

NSN 4730-00-684-6394 has 5 cross-referenced part numbers: MIL-F-83798 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M83798/2-8 (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), 8846-8D (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution), 678-8D (Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division).

What NSN replaces 4730-00-684-6394?

There are 11 known substitutes for 4730-00-684-6394: 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: Material: ALUMINUM ALLOY OVERALL; Special Features: INSIDE SURFACE TREATED; Nominal Thread Size: 0.750 INCHES FIRST END IN; Leg Length: 0.938 INCHES NOMINAL FIRST END IN. 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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