PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS20819-4CSleeve,flared,tube Fitting

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 4730-01-075-2705 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-075-2705 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-075-2705. Primary manufacturer part number: MS20819-4C.
Features
  • Sleeve,flared,tube Fitting — FSC 4730
  • Seat Angle in Deg: 33.0
  • Hose/tube Outside Diameter for Which Designed: 0.250 INCHES NOMINAL IN
  • Flange Width: 0.141 INCHES NOMINAL IN
  • Sleeve Outside Diameter: 0.297 INCHES NOMINAL IN
  • Flange Outside Diameter: 0.383 INCHES NOMINAL IN
  • Material: STEEL COMP 302
  • Style Designator: SLEEVE
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Comp 302 construction
General Description

The Sleeve,flared,tube Fitting, cataloged under National Stock Number 4730-01-075-2705, 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 Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-075-2705
Primary Part NumberMS20819-4C
Item NameSleeve,flared,tube Fitting
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Seat Angle in Deg33.0
Hose/tube Outside Diameter for Which Designed0.250 INCHES NOMINAL IN
Flange Width0.141 INCHES NOMINAL IN
Sleeve Outside Diameter0.297 INCHES NOMINAL IN
Flange Outside Diameter0.383 INCHES NOMINAL IN
MaterialSTEEL COMP 302
Style DesignatorSLEEVE
Surface TreatmentCADMIUM
Casehardening IndicatorNOT CASEHARDENED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4730-00-580-7471AS5176J04 INTERCHANGEABLE
Sleeve,flared,tube Fitting
Sae International Dba Sae International
Cross-Reference Index
Part NumberManufacturer
MS20819-4C Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
4730-00-580-7471INTERCHANGEABLE
SLEEVE,FLARED,TUBE FITTING
AS5176J04

Frequently Asked Questions

What is NSN 4730-01-075-2705?

NSN 4730-01-075-2705 is a Sleeve,flared,tube Fitting, manufactured by Military Standards Promulgated by Military Departments 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 4730-01-075-2705?

NSN 4730-01-075-2705 has 1 cross-referenced part number: MS20819-4C (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 4730-01-075-2705?

There is 1 known substitute for 4730-01-075-2705: 4730-00-580-7471. Verify interchangeability with system specifications before substitution.

What are the specifications of MS20819-4C?

Key specifications for MS20819-4C: Seat Angle in Deg: 33.0; Hose/tube Outside Diameter for Which Designed: 0.250 INCHES NOMINAL IN; Flange Width: 0.141 INCHES NOMINAL IN; Sleeve Outside Diameter: 0.297 INCHES NOMINAL IN. 10 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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