PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1021040Gear,spur

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 3020-00-517-4120 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-517-4120 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-517-4120. Primary manufacturer part number: 1021040.
Features
  • Gear,spur — FSC 3020
  • Body Style: PLAIN, SOLID
  • Nominal Distance Between Body Face and Protruding Hub End: 0.0625 INCHES SECOND END IN
  • Tooth Form: STANDARD
  • Material Document and Classification: QQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Pressure Angle: 14.5000 DEGREES
  • Hub Style Designator: PLAIN BOTH ENDS
  • Style Designator: PROTRUDING HUBS
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Steel Comp 416 Overall construction
General Description

The Gear,spur, cataloged under National Stock Number 3020-00-517-4120, 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 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-517-4120
Primary Part Number1021040
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Body StylePLAIN, SOLID
Nominal Distance Between Body Face and Protruding Hub End0.0625 INCHES SECOND END IN
Tooth FormSTANDARD
Material Document and ClassificationQQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Pressure Angle14.5000 DEGREES
Hub Style DesignatorPLAIN BOTH ENDS
Style DesignatorPROTRUDING HUBS
Hub Nominal Diameter0.249 INCHES SECOND END IN
Hub Nominal Diameter0.312 INCHES FIRST END IN
Surface TreatmentPASSIVATE OVERALL
Face Nominal Width0.093 INCHES IN
Nominal Distance Between Body Face and Protruding Hub End0.155 INCHES FIRST END IN
Nominal Outside Diameter0.466 INCHES IN
Bore StylePLAIN BOTH ENDS
MaterialSTEEL COMP 416 OVERALL
Bore Nominal Diameter0.187 INCHES BOTH ENDS IN
Pitch Diameter0.4190 INCHES MINIMUM AND 0.4290 INCHES MAXIMUM IN
Teeth Quantity20
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4730-00-249-20291021-040 INTERCHANGEABLE
Tee,pipe
Flagg Stanley G & Co Inc Dba Flagg Brass
Cross-Reference Index
Part NumberManufacturer
1021040 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
Related Parts
4730-00-249-2029INTERCHANGEABLE
TEE,PIPE
1021-040

Frequently Asked Questions

What is NSN 3020-00-517-4120?

NSN 3020-00-517-4120 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 3020-00-517-4120?

NSN 3020-00-517-4120 has 1 cross-referenced part number: 1021040 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).

What NSN replaces 3020-00-517-4120?

There is 1 known substitute for 3020-00-517-4120: 4730-00-249-2029. Verify interchangeability with system specifications before substitution.

What are the specifications of 1021040?

Key specifications for 1021040: Body Style: PLAIN, SOLID; Nominal Distance Between Body Face and Protruding Hub End: 0.0625 INCHES SECOND END IN; Tooth Form: STANDARD; Material Document and Classification: QQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 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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