PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AS5174-0404Reducer,boss

Sae International Dba Sae International · NSN 4730-00-684-6911 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-684-6911 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-684-6911. Primary manufacturer part number: AS5174-0404.
Features
  • Reducer,boss — FSC 4730
  • Thread Class: 3A ALL ENDS A
  • Connection Style: FLARED W/ GASKET SEAL (BOSS) ALL ENDS
  • Nominal Overall Length: 1.250 INCHES IN
  • Surface Treatment: CADMIUM OUTSIDE
  • Specification/standard Data: 96906-MS24392 GOVERNMENT STANDARD
  • Nominal Thread Size: 0.438 INCHES ALL ENDS IN
  • Thread Series Designator: UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
Applications
  • Applications requiring Steel Overall construction
General Description

The Reducer,boss, cataloged under National Stock Number 4730-00-684-6911, 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 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 24 commercial cross-references from 17 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-684-6911
Primary Part NumberAS5174-0404
Item NameReducer,boss
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerSae International Dba Sae International
StatusCANCELLED
Thread Class3A ALL ENDS A
Connection StyleFLARED W/ GASKET SEAL (BOSS) ALL ENDS
Nominal Overall Length1.250 INCHES IN
Surface TreatmentCADMIUM OUTSIDE
Specification/standard Data96906-MS24392 GOVERNMENT STANDARD
Nominal Thread Size0.438 INCHES ALL ENDS IN
Thread Series DesignatorUNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
Nominal Outside Diameter Tube Accommodated0.250 INCHES ALL ENDS IN
Seat Angle37.0 DEGREES ALL ENDS
Style DesignatorFLARED W/ CENTER WRENCHING FACILITY
MaterialSTEEL OVERALL
Connection TypeTHREADED EXTERNAL TUBE ALL ENDS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
4730-00-278-3242 INTERCHANGEABLE
Nipple,tube
Cross-Reference Index
Part NumberManufacturer
MS24392-4 Faber Enterprises, Inc. Div Faber Enterprise Inc (USA)
MS24392-4 Collins Engineering Corp (USA)
AN815-4 Hydro-Fitting Manufacturing Corporation (USA)
Z00.N7730061190 Daher Aerospace - Ex Socata (FRA)
AN815-4 Aeronautical Standards Group Dept of Navy and Air Force (USA)
MS24392-4 Crown Fitting Co Inc (USA)
MS24392-4 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS24392-4 Acra Aerospace, Llc (USA)
AS5174 Sae International Dba Sae International (USA)
MILF5509A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS24392-4 Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA)
AS4841 Sae International Dba Sae International (USA)
AS5174 Society of Automotive Engineers Inc (USA)
MS24392-4 Satair A/s (DNK)
MILF5509A Sae International Dba Sae International (USA)
3111802 Embraer Aviation International (FRA)
AS5174-0404 Society of Automotive Engineers Inc (USA)
AS4841 Society of Automotive Engineers Inc (USA)
SAE-AS4841 Sae International Dba Sae International (USA)
MS24392-4 Hydro-Fitting Manufacturing Corporation (USA)
Related Parts
4730-00-278-3242INTERCHANGEABLE
NIPPLE,TUBE

Frequently Asked Questions

What is NSN 4730-00-684-6911?

NSN 4730-00-684-6911 is a Reducer,boss, manufactured by Sae International Dba Sae International, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-684-6911?

NSN 4730-00-684-6911 has 24 cross-referenced part numbers: MS24392-4 (Faber Enterprises, Inc. Div Faber Enterprise Inc), MS24392-4 (Collins Engineering Corp), AN815-4 (Hydro-Fitting Manufacturing Corporation), Z00.N7730061190 (Daher Aerospace - Ex Socata), AN815-4 (Aeronautical Standards Group Dept of Navy and Air Force) and 19 more.

What NSN replaces 4730-00-684-6911?

There is 1 known substitute for 4730-00-684-6911: 4730-00-278-3242. Verify interchangeability with system specifications before substitution.

What are the specifications of AS5174-0404?

Key specifications for AS5174-0404: Thread Class: 3A ALL ENDS A; Connection Style: FLARED W/ GASKET SEAL (BOSS) ALL ENDS; Part Name Assigned by Controlling Agency: UNION, FLARED TUBE; End Item Identification: GRUMMAN AIRCRAFT CORP, A-10 AIRCRAFT MODEL. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-684-6911 still in active supply?

NSN 4730-00-684-6911 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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