PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS21904D4Elbow,tube

Sae International Dba Sae International · NSN 4730-00-194-1065 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-194-1065 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-194-1065. Primary manufacturer part number: MS21904D4.
Features
  • Elbow,tube — FSC 4730
  • Specification/standard Data: 96906-MS2190 GOVERNMENT STANDARD
  • Media for Which Designed: FLUID SINGLE RESPONSE
  • Media for Which Designed: FLUID SINGLE RESPONSE
  • Material: ALUMINUM ALLOY OVERALL
  • Thread Series Designator: UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
  • Connection Type: THREADED EXTERNAL TUBE ALL ENDS
  • Nominal Thread Size: 0.438 INCHES ALL ENDS IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Aluminum Alloy Overall construction
General Description

The Elbow,tube, cataloged under National Stock Number 4730-00-194-1065, 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 Sae International Dba Sae International. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-194-1065
Primary Part NumberMS21904D4
Item NameElbow,tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerSae International Dba Sae International
StatusCANCELLED
Specification/standard Data96906-MS2190 GOVERNMENT STANDARD
Media for Which DesignedFLUID SINGLE RESPONSE
Media for Which DesignedFLUID SINGLE RESPONSE
MaterialALUMINUM ALLOY OVERALL
Thread Series DesignatorUNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
Connection TypeTHREADED EXTERNAL TUBE ALL ENDS
Nominal Thread Size0.438 INCHES ALL ENDS IN
Nominal Outside Diameter Tube Accommodated0.250 INCHES ALL ENDS IN
Thread Class3A ALL ENDS A
Thread Series DesignatorUNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
MaterialALUMINUM ALLOY OVERALL
Specification/standard Data96906-MS2190 GOVERNMENT STANDARD
Flow Angle90.0 DEGREES
Leg Length0.875 INCHES NOMINAL ALL ENDS IN
Connection StyleFLARELESS (TUBE) ALL ENDS
Flow Angle90.0 DEGREES
Surface TreatmentANODIZE OVERALL
Surface TreatmentANODIZE OVERALL
Seat Angle12.0 DEGREES ALL ENDS
Nominal Outside Diameter Tube Accommodated0.250 INCHES ALL ENDS IN
Seat Angle12.0 DEGREES ALL ENDS
Nominal Thread Size0.438 INCHES ALL ENDS IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
4730-00-541-1580AS21900-3 INTERCHANGEABLE
Nipple,boss
Sae International Dba Sae International
4730-00-541-1756 INTERCHANGEABLE
Adapter,straight,tube to Boss
4730-00-684-4041MS21922-16C INTERCHANGEABLE
Sleeve,clinch,tube Fitting
Sae International Dba Sae International
4730-00-756-1031 INTERCHANGEABLE
Elbow,tube
Cross-Reference Index
Part NumberManufacturer
MS21904D4 Leonardo Spa Aeronautics Division - Pomigliano D'arco Site (ITA)
MIL-F-18280A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS21904-4 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
SAE-AS18280 Sae International Dba Sae International (USA)
MS21904D4 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS21904D4 PRIMARY Sae International Dba Sae International (USA)
Related Parts
4730-00-541-1580INTERCHANGEABLE
NIPPLE,BOSS
AS21900-3
4730-00-541-1756INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO BOSS
4730-00-684-4041INTERCHANGEABLE
SLEEVE,CLINCH,TUBE FITTING
MS21922-16C
4730-00-756-1031INTERCHANGEABLE
ELBOW,TUBE

Frequently Asked Questions

What is NSN 4730-00-194-1065?

NSN 4730-00-194-1065 is a Elbow,tube, manufactured by Sae International Dba Sae International, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-194-1065?

NSN 4730-00-194-1065 has 6 cross-referenced part numbers: MS21904D4 (Leonardo Spa Aeronautics Division - Pomigliano D'arco Site), MIL-F-18280A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MS21904-4 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), SAE-AS18280 (Sae International Dba Sae International), MS21904D4 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M) and 1 more.

What NSN replaces 4730-00-194-1065?

There are 4 known substitutes for 4730-00-194-1065: 4730-00-541-1580, 4730-00-541-1756, 4730-00-684-4041 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS21904D4?

Key specifications for MS21904D4: Specification/standard Data: 96906-MS2190 GOVERNMENT STANDARD; Media for Which Designed: FLUID SINGLE RESPONSE; Media for Which Designed: FLUID SINGLE RESPONSE; Material: ALUMINUM ALLOY OVERALL. 22 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-194-1065 still in active supply?

NSN 4730-00-194-1065 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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