PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-DTL-52525/3Elbow,tube to Hose

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 4730-01-075-3478 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-075-3478 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-075-3478. Primary manufacturer part number: MIL-DTL-52525/3.
Features
  • Elbow,tube to Hose — FSC 4730
  • Nondefinitive Spec/std Data: B TYPE
  • Material: IRON OR STEEL OVERALL
  • Seat Angle: 37.0 DEGREES FIRST END
  • Surface Treatment: ZINC OVERALL
  • Nominal Outside Diameter Hose Accommodated: 0.688 INCHES SECOND END IN
  • Thread Series Designator: UNF FIRST END
  • Nominal Inside Diameter Hose Accommodated: 0.250 INCHES SECOND END IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Iron or Steel Overall construction
General Description

The Elbow,tube to Hose, cataloged under National Stock Number 4730-01-075-3478, 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 23 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-075-3478
Primary Part NumberMIL-DTL-52525/3
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
Nondefinitive Spec/std DataB TYPE
MaterialIRON OR STEEL OVERALL
Seat Angle37.0 DEGREES FIRST END
Surface TreatmentZINC OVERALL
Nominal Outside Diameter Hose Accommodated0.688 INCHES SECOND END IN
Thread Series DesignatorUNF FIRST END
Nominal Inside Diameter Hose Accommodated0.250 INCHES SECOND END IN
Maximum Operating Temp212.0 FAHRENHEIT SINGLE RESPONSE DEGF
Nominal Thread Size0.437 INCHES FIRST END IN
Flow Angle90.0 DEGREES
Nominal Outside Diameter Tube Accommodated0.250 INCHES FIRST END IN
Leg Length1.084 INCHES NOMINAL FIRST END IN
Media for Which DesignedHYDRAULIC FLUID SINGLE RESPONSE
Operating Pressure5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Specification/standard Data81349-MIL-F-52525C GOVERNMENT SPECIFICATION
Connection TypeTHREADED EXTERNAL HOSE GRIPPING SECOND END
Thread Class2B FIRST END
Connection StyleGRIPPING NIPPLE (NOSE) SECOND END
Connection TypeTHREADED INTERNAL TUBE FIRST END
Connection StyleSWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
Leg Length3.000 INCHES NOMINAL SECOND END IN
Surface Treatment Document and ClassificationSTM-B-633, TYPE 2, CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Furnished Items and Quantity1 HOSE COUPLING NUT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
4730-00-451-2704 INTERCHANGEABLE
Elbow,tube to Hose
4730-00-451-4620 INTERCHANGEABLE
Elbow,tube to Hose
4730-01-007-2641 INTERCHANGEABLE
Elbow,tube to Hose
4730-01-024-0908 INTERCHANGEABLE
Elbow,tube to Hose
4730-01-075-5054 INTERCHANGEABLE
Elbow,tube to Hose
4730-01-075-6566 INTERCHANGEABLE
Elbow,tube to Hose
4730-01-226-3301 INTERCHANGEABLE
Elbow,tube to Hose
Cross-Reference Index
Part NumberManufacturer
MIL-DTL-52525/3 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M52525/3-4-4J Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M52525/3-4-4 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-F-52525 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
4730-00-451-2704INTERCHANGEABLE
ELBOW,TUBE TO HOSE
4730-00-451-4620INTERCHANGEABLE
ELBOW,TUBE TO HOSE
4730-01-007-2641INTERCHANGEABLE
ELBOW,TUBE TO HOSE
4730-01-024-0908INTERCHANGEABLE
ELBOW,TUBE TO HOSE
4730-01-075-5054INTERCHANGEABLE
ELBOW,TUBE TO HOSE
4730-01-075-6566INTERCHANGEABLE
ELBOW,TUBE TO HOSE
4730-01-226-3301INTERCHANGEABLE
ELBOW,TUBE TO HOSE

Frequently Asked Questions

What is NSN 4730-01-075-3478?

NSN 4730-01-075-3478 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 4730-01-075-3478?

NSN 4730-01-075-3478 has 4 cross-referenced part numbers: MIL-DTL-52525/3 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M52525/3-4-4J (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M52525/3-4-4 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-F-52525 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 4730-01-075-3478?

There are 7 known substitutes for 4730-01-075-3478: 4730-00-451-2704, 4730-00-451-4620, 4730-01-007-2641 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-DTL-52525/3?

Key specifications for MIL-DTL-52525/3: Nondefinitive Spec/std Data: B TYPE; Material: IRON OR STEEL OVERALL; Seat Angle: 37.0 DEGREES FIRST END; Surface Treatment: ZINC OVERALL. 23 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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