PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1225949-4Gear,spur

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 3020-00-042-6764 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-042-6764 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-042-6764. Primary manufacturer part number: 1225949-4.
Features
  • Gear,spur — FSC 3020
  • Teeth Quantity: 65
  • Body Style: PLAIN, SOLID
  • First Step Nominal Diameter: 0.560 INCHES FIRST END IN
  • Hub Style Designator: PLAIN SECOND END
  • Material: ALUMINUM ALLOY 6061 OVERALL
  • First Step Nominal Length: 0.090 INCHES FIRST END IN
  • Pressure Angle: 20.0000 DEGREES
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Aluminum Alloy 6061 Overall construction
General Description

The Gear,spur, cataloged under National Stock Number 3020-00-042-6764, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 25 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-042-6764
Primary Part Number1225949-4
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Teeth Quantity65
Body StylePLAIN, SOLID
First Step Nominal Diameter0.560 INCHES FIRST END IN
Hub Style DesignatorPLAIN SECOND END
MaterialALUMINUM ALLOY 6061 OVERALL
First Step Nominal Length0.090 INCHES FIRST END IN
Pressure Angle20.0000 DEGREES
Bore Nominal Diameter0.187 INCHES BOTH ENDS IN
Precision ClassificationQUALITY NUMBER 10 OR QUALITY NUMBER 11
Nominal Distance Between Body Face and Protruding Hub End0.200 INCHES FIRST END IN
Hub Style Designator1 STEP FIRST END
Tooth FormSTANDARD
Bore StylePLAIN BOTH ENDS
Style DesignatorPROTRUDING HUBS
Mounting Hole Nominal Diameter0.112 INCHES AXIALLY THROUGH HUB FIRST END IN
Mounting Hole Type and Quantity2 PLAIN AXIALLY THROUGH HUB FIRST END
Hub Nominal Diameter0.560 INCHES SECOND END IN
Face Nominal Width0.095 INCHES IN
Nominal Outside Diameter1.396 INCHES IN
Material Document and ClassificationQQ-A-225/8,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Pitch Diameter1.3542 INCHES NOMINAL IN
Nominal Distance Between Body Face and Protruding Hub End0.103 INCHES SECOND END IN
End Nominal Length0.110 INCHES FIRST END IN
End Nominal Diameter0.250 INCHES FIRST END IN
Attachment MethodMOUNTING HOLE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
3020-00-012-39881225949-10 INTERCHANGEABLE
Gear,spur
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
3020-00-012-39951225949-13 INTERCHANGEABLE
Gear,spur
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
3020-00-012-40041225949-9 INTERCHANGEABLE
Gear,spur
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
3020-00-826-61921225949-1 INTERCHANGEABLE
Gear,spur
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
6150-01-129-050012259494 INTERCHANGEABLE
Wiring Harness,branched
U S Army Tank Automotive Command Amsta-Im-Mm
Cross-Reference Index
Part NumberManufacturer
1225949 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
1225949-4 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
1225949-4 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
59-820-4 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
Related Parts
3020-00-012-3988INTERCHANGEABLE
GEAR,SPUR
1225949-10
3020-00-012-3995INTERCHANGEABLE
GEAR,SPUR
1225949-13
3020-00-012-4004INTERCHANGEABLE
GEAR,SPUR
1225949-9
3020-00-826-6192INTERCHANGEABLE
GEAR,SPUR
1225949-1
6150-01-129-0500INTERCHANGEABLE
WIRING HARNESS,BRANCHED
12259494

Frequently Asked Questions

What is NSN 3020-00-042-6764?

NSN 3020-00-042-6764 is a Gear,spur, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-042-6764?

NSN 3020-00-042-6764 has 4 cross-referenced part numbers: 1225949 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 1225949-4 (Lockheed Martin Corporation Div Rms - Mitchel Field), 1225949-4 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 59-820-4 (Lockheed Martin Corporation Div Rms - Mitchel Field).

What NSN replaces 3020-00-042-6764?

There are 5 known substitutes for 3020-00-042-6764: 3020-00-012-3988, 3020-00-012-3995, 3020-00-012-4004 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1225949-4?

Key specifications for 1225949-4: Teeth Quantity: 65; Body Style: PLAIN, SOLID; First Step Nominal Diameter: 0.560 INCHES FIRST END IN; Hub Style Designator: PLAIN SECOND END. 25 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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