PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1771669Gear Cluster

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 3020-00-103-2539 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-103-2539 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-103-2539. Primary manufacturer part number: 1771669.
Features
  • Gear Cluster — FSC 3020
  • Precision Classification: QUALITY NUMBER 10 OR QUALITY NUMBER 11 FIRST GEAR
  • Material: ALUMINUM ALLOY 6061 OVERALL
  • Construction: SOLID
  • Design Type: SPUR FIRST GEAR
  • Attachment Method: MOUNTING HOLE
  • Hub Style Designator: PLAIN FIRST END
  • Nominal Outside Diameter: 2.041 INCHES FOURTH GEAR IN
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Aluminum Alloy 6061 Overall construction
General Description

The Gear Cluster, cataloged under National Stock Number 3020-00-103-2539, 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 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-103-2539
Primary Part Number1771669
Item NameGear Cluster
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Precision ClassificationQUALITY NUMBER 10 OR QUALITY NUMBER 11 FIRST GEAR
MaterialALUMINUM ALLOY 6061 OVERALL
ConstructionSOLID
Design TypeSPUR FIRST GEAR
Attachment MethodMOUNTING HOLE
Hub Style DesignatorPLAIN FIRST END
Nominal Outside Diameter2.041 INCHES FOURTH GEAR IN
Hub Nominal Length0.200 INCHES FIRST END IN
Hub Nominal Length0.090 INCHES BETWEEN FIRST AND SECOND GEAR IN
Bore StylePLAIN BOTH ENDS
Hub Nominal Diameter0.3750 INCHES BETWEEN FIRST AND SECOND GEAR IN
Material Document and ClassificationQQ-A-225/8,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Design TypeSPUR SECOND GEAR
Nominal Overall Length0.475 INCHES IN
Nominal Outside Diameter1.541 INCHES FIFTH GEAR IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
3110-00-100-0305394A INTERCHANGEABLE
Cup,tapered Roller Bearing
The Timken Corporation
5305-00-450-193593400 INTERCHANGEABLE
Screw,machine
Briggs and Stratton Corp
5962-01-006-263093400 INTERCHANGEABLE
Microcircuit
Texas Instruments Incorporated
5955-01-114-7082SCA93400 INTERCHANGEABLE
Crystal Unit,quartz
Drs Advanced Isr, Llc
Cross-Reference Index
Part NumberManufacturer
93-400 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
1771669 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
1771669 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
Related Parts
3110-00-100-0305INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
394A
5305-00-450-1935INTERCHANGEABLE
SCREW,MACHINE
93400
5962-01-006-2630INTERCHANGEABLE
MICROCIRCUIT
93400
5955-01-114-7082INTERCHANGEABLE
CRYSTAL UNIT,QUARTZ
SCA93400

Frequently Asked Questions

What is NSN 3020-00-103-2539?

NSN 3020-00-103-2539 is a Gear Cluster, 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 3020-00-103-2539?

NSN 3020-00-103-2539 has 3 cross-referenced part numbers: 93-400 (Lockheed Martin Corporation Div Rms - Mitchel Field), 1771669 (Lockheed Martin Corporation Div Rms - Mitchel Field), 1771669 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).

What NSN replaces 3020-00-103-2539?

There are 4 known substitutes for 3020-00-103-2539: 3110-00-100-0305, 5305-00-450-1935, 5962-01-006-2630 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1771669?

Key specifications for 1771669: Precision Classification: QUALITY NUMBER 10 OR QUALITY NUMBER 11 FIRST GEAR; Material: ALUMINUM ALLOY 6061 OVERALL; Construction: SOLID; Design Type: SPUR FIRST GEAR. 15 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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