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 4730-01-136-0765 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-136-0765 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-136-0765. Primary manufacturer part number: MIL-F-83798.
Features
  • Elbow,tube to Hose — FSC 4730
  • Connection Style: GRIPPING NIPPLE (NOSE) SECOND END
  • Connection Style: SWIVEL NUT, FLARELESS (SWIVEL NUT ATTACHMENT METHOD OPTIONAL) (TUBE) FIRST END
  • Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Flow Angle: 45.0 DEGREES
  • Nominal Inside Diameter Hose Accommodated: 0.281 INCHES SECOND END IN
  • Surface Treatment: ANODIZE OVERALL
  • Nominal Outside Diameter Tube Accommodated: 0.312 INCHES FIRST END IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Aluminum Alloy 2024 and Aluminum Alloy 6061 Overall construction
General Description

The Elbow,tube to Hose, cataloged under National Stock Number 4730-01-136-0765, 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 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-136-0765
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 NIPPLE (NOSE) SECOND END
Connection StyleSWIVEL NUT, FLARELESS (SWIVEL NUT ATTACHMENT METHOD OPTIONAL) (TUBE) FIRST END
Surface Treatment Document and ClassificationMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Flow Angle45.0 DEGREES
Nominal Inside Diameter Hose Accommodated0.281 INCHES SECOND END IN
Surface TreatmentANODIZE OVERALL
Nominal Outside Diameter Tube Accommodated0.312 INCHES FIRST END IN
Connection TypeTHREADED INTERNAL TUBE FIRST END
Nominal Outside Diameter Hose Accommodated0.486 INCHES SECOND END IN
Connection TypeTHREADED EXTERNAL HOSE GRIPPING SECOND END
Material Document and ClassificationQQ-A-225/6,T6 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/6,T851 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/8,T6 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/8,T651 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Media for Which DesignedOIL SECOND RESPONSE
Nondefinitive Spec/std Data5 SIZE
Leg Length0.490 INCHES MINIMUM AND 0.560 INCHES MAXIMUM FIRST END IN
Nominal Thread Size0.500 INCHES FIRST END IN
Seat Angle12.0 DEGREES FIRST END
Operating Pressure1000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Leg Length1.900 INCHES MAXIMUM SECOND END IN
MaterialALUMINUM ALLOY 2024 AND ALUMINUM ALLOY 6061 OVERALL
Specification/standard Data81349-MIL-F-83798/5 GOVERNMENT SPECIFICATION
Thread Class3B FIRST END
Thread Series DesignatorUNIFIED NATIONAL JOINT FINE (UNJF) FIRST END
Maximum Operating Temp250.0 FAHRENHEIT SINGLE RESPONSE DEGF
Media for Which DesignedFUEL FIRST RESPONSE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
4730-00-087-1010 INTERCHANGEABLE
Elbow,tube to Hose
4730-00-087-1016 INTERCHANGEABLE
Elbow,tube to Hose
4730-00-533-2850 INTERCHANGEABLE
Elbow,tube to Hose
4730-01-240-6110 INTERCHANGEABLE
Elbow,tube to Hose
4730-01-526-5982 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
M83798/5-5 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-83798/5 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS87022-5 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
4730-00-087-1010INTERCHANGEABLE
ELBOW,TUBE TO HOSE
4730-00-087-1016INTERCHANGEABLE
ELBOW,TUBE TO HOSE
4730-00-533-2850INTERCHANGEABLE
ELBOW,TUBE TO HOSE
4730-01-240-6110INTERCHANGEABLE
ELBOW,TUBE TO HOSE
4730-01-526-5982INTERCHANGEABLE
ELBOW,TUBE TO HOSE

Frequently Asked Questions

What is NSN 4730-01-136-0765?

NSN 4730-01-136-0765 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 4730-01-136-0765?

NSN 4730-01-136-0765 has 4 cross-referenced part numbers: MIL-F-83798 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M83798/5-5 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-83798/5 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MS87022-5 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 4730-01-136-0765?

There are 5 known substitutes for 4730-01-136-0765: 4730-00-087-1010, 4730-00-087-1016, 4730-00-533-2850 and 2 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 NIPPLE (NOSE) SECOND END; Connection Style: SWIVEL NUT, FLARELESS (SWIVEL NUT ATTACHMENT METHOD OPTIONAL) (TUBE) FIRST END; Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Flow Angle: 45.0 DEGREES. 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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