PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AS5174D0505Reducer,boss

Sae International Dba Sae International · NSN 4730-00-866-1835 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-866-1835 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-866-1835. Primary manufacturer part number: AS5174D0505.
Features
  • Reducer,boss — FSC 4730
  • Nominal Thread Size: 0.500 INCHES ALL ENDS IN
  • Connection Type: THREADED EXTERNAL TUBE ALL ENDS
  • Surface Treatment: ANODIZE OVERALL
  • Specification/standard Data: 81343-AS5174 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
  • Media for Which Designed: HYDRAULIC FLUID SINGLE RESPONSE
  • Thread Series Designator: UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
  • Seat Angle: 37.0 DEGREES ALL ENDS
Applications
  • Applications requiring Aluminum Alloy Overall construction
General Description

The Reducer,boss, cataloged under National Stock Number 4730-00-866-1835, 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 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 15 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-866-1835
Primary Part NumberAS5174D0505
Item NameReducer,boss
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerSae International Dba Sae International
StatusCANCELLED
Nominal Thread Size0.500 INCHES ALL ENDS IN
Connection TypeTHREADED EXTERNAL TUBE ALL ENDS
Surface TreatmentANODIZE OVERALL
Specification/standard Data81343-AS5174 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Media for Which DesignedHYDRAULIC FLUID SINGLE RESPONSE
Thread Series DesignatorUNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
Seat Angle37.0 DEGREES ALL ENDS
Surface Treatment Document and ClassificationMIL-A-8625,TY 2,CL 2,AODIZED BLUE MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Nominal Outside Diameter Tube Accommodated0.313 INCHES ALL ENDS IN
Nominal Overall Length1.250 INCHES IN
Thread Class3A ALL ENDS A
Material Document and Classification11-A-225/4,T6 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-225.6,T6 FED SPEC 2ND MATERIAL RESPONSE OVERALL
MaterialALUMINUM ALLOY OVERALL
Maximum Operating Temp225.0 FAHRENHEIT SINGLE RESPONSE DEGF
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
5340-00-040-23658347213 INTERCHANGEABLE
Clip,spring Tension
U S Army Tank Automotive Command Amsta-Im-Mm
4730-00-278-8460 INTERCHANGEABLE
Nipple,tube
6150-00-482-635317276 INTERCHANGEABLE
Cable Assembly,power,electrical
Belden Wire and Cable Co Wire and Cable Office
4730-00-720-18198061246 INTERCHANGEABLE
Nipple,boss
Us Army Aviation and Missile Command
6515-01-385-032622113 INTERCHANGEABLE
Suction Kit,tracheal
Salter Labs, Llc Dba Salter Labs
3010-01-441-802317276 INTERCHANGEABLE
Motor-Transmission
Mekel Technology, Inc.
2590-01-571-7354491051 INTERCHANGEABLE
Brush Assy,turret
Felton Inc Div Felton Incorporated
5999-01-585-843317276 INTERCHANGEABLE
Mounting Pad,electrical-Electron
Astronautics Corporation of America
Cross-Reference Index
Part NumberManufacturer
AS5174 Society of Automotive Engineers Inc (USA)
AS4841 Sae International Dba Sae International (USA)
AS5174D0505 Society of Automotive Engineers Inc (USA)
491 051 Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company (USA)
AS5174 Sae International Dba Sae International (USA)
17276 Kidde-Fenwal, Llc (USA)
AN815-5D Aeronautical Standards Group Dept of Navy and Air Force (USA)
SAE-AS4841 Sae International Dba Sae International (USA)
AS4841 Society of Automotive Engineers Inc (USA)
811HT5D Department of the Air Force (USA)
3112317 Embraer Empresa Brasileira De Aeronautica Sa (BRA)
17276 Davey Compressor Co Div of Keco Industries Inc (USA)
MS24392D5 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
3112317 Embraer S.a. (BRA)
AS5174D0505 PRIMARY Sae International Dba Sae International (USA)
Related Parts
5340-00-040-2365INTERCHANGEABLE
CLIP,SPRING TENSION
8347213
4730-00-278-8460INTERCHANGEABLE
NIPPLE,TUBE
6150-00-482-6353INTERCHANGEABLE
CABLE ASSEMBLY,POWER,ELECTRICAL
17276
4730-00-720-1819INTERCHANGEABLE
NIPPLE,BOSS
8061246
6515-01-385-0326INTERCHANGEABLE
SUCTION KIT,TRACHEAL
22113
3010-01-441-8023INTERCHANGEABLE
MOTOR-TRANSMISSION
17276
2590-01-571-7354INTERCHANGEABLE
BRUSH ASSY,TURRET
491051
5999-01-585-8433INTERCHANGEABLE
MOUNTING PAD,ELECTRICAL-ELECTRON
17276

Frequently Asked Questions

What is NSN 4730-00-866-1835?

NSN 4730-00-866-1835 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 4730-00-866-1835?

NSN 4730-00-866-1835 has 15 cross-referenced part numbers: AS5174 (Society of Automotive Engineers Inc), AS4841 (Sae International Dba Sae International), AS5174D0505 (Society of Automotive Engineers Inc), 491 051 (Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company), AS5174 (Sae International Dba Sae International) and 10 more.

What NSN replaces 4730-00-866-1835?

There are 8 known substitutes for 4730-00-866-1835: 5340-00-040-2365, 4730-00-278-8460, 6150-00-482-6353 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AS5174D0505?

Key specifications for AS5174D0505: Nominal Thread Size: 0.500 INCHES ALL ENDS IN; Connection Type: THREADED EXTERNAL TUBE ALL ENDS; Surface Treatment: ANODIZE OVERALL; Specification/standard Data: 81343-AS5174 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-866-1835 still in active supply?

NSN 4730-00-866-1835 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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