PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1770891Gear,spur

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 3020-00-058-0036 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-058-0036 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-058-0036. Primary manufacturer part number: 1770891.
Features
  • Gear,spur — FSC 3020
  • Nominal Overall Length: 0.345 INCHES IN
  • Nominal Outside Diameter: 1.041 INCHES IN
  • End Nominal Diameter: 0.156 INCHES FIRST END IN
  • First Step Nominal Diameter: 0.220 INCHES FIRST END IN
  • Body Style: PLAIN, SOLID
  • Pitch Diameter: 0.9990 INCHES MINIMUM AND 1.0000 INCHES MAXIMUM IN
  • Precision Classification: QUALITY NUMBER 10 OR QUALITY NUMBER 11
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 3020-00-058-0036, 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 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-058-0036
Primary Part Number1770891
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Nominal Overall Length0.345 INCHES IN
Nominal Outside Diameter1.041 INCHES IN
End Nominal Diameter0.156 INCHES FIRST END IN
First Step Nominal Diameter0.220 INCHES FIRST END IN
Body StylePLAIN, SOLID
Pitch Diameter0.9990 INCHES MINIMUM AND 1.0000 INCHES MAXIMUM IN
Precision ClassificationQUALITY NUMBER 10 OR QUALITY NUMBER 11
Style DesignatorPROTRUDING HUB
Teeth Quantity48
Nominal Distance Between Body Face and Protruding Hub End0.250 INCHES FIRST END IN
Surface TreatmentANODIZE OVERALL
MaterialALUMINUM ALLOY 6061 OVERALL
Bore Nominal Diameter0.124 INCHES BOTH ENDS IN
First Step Nominal Length0.035 INCHES FIRST END IN
Material Document and ClassificationQQ-A-225/8,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Face Nominal Width0.095 INCHES IN
Tooth FormSTANDARD
Pressure Angle20.0000 DEGREES
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5120-00-240-529213807 INTERCHANGEABLE
Key,socket Head Screw
Bondhus Corp
2920-00-504-16117H3838 INTERCHANGEABLE
Armature,generator
Caterpillar Inc Div Caterpillar Defense
Cross-Reference Index
Part NumberManufacturer
41-754 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
1770891 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
Related Parts
5120-00-240-5292INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
13807
2920-00-504-1611INTERCHANGEABLE
ARMATURE,GENERATOR
7H3838

Frequently Asked Questions

What is NSN 3020-00-058-0036?

NSN 3020-00-058-0036 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 3020-00-058-0036?

NSN 3020-00-058-0036 has 2 cross-referenced part numbers: 41-754 (Lockheed Martin Corporation Div Rms - Mitchel Field), 1770891 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).

What NSN replaces 3020-00-058-0036?

There are 2 known substitutes for 3020-00-058-0036: 5120-00-240-5292, 2920-00-504-1611. Verify interchangeability with system specifications before substitution.

What are the specifications of 1770891?

Key specifications for 1770891: Nominal Overall Length: 0.345 INCHES IN; Nominal Outside Diameter: 1.041 INCHES IN; End Nominal Diameter: 0.156 INCHES FIRST END IN; First Step Nominal Diameter: 0.220 INCHES FIRST END IN. 18 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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