PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

450139Gear,spur

Bae Systems Information and Electronic Systems Integration Inc. · NSN 3020-00-004-2702 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-004-2702 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-004-2702. Primary manufacturer part number: 450139.
Features
  • Gear,spur — FSC 3020
  • Pressure Angle: 20.0000 DEGREES
  • Teeth Quantity: 78
  • Style Designator: HUBLESS
  • Precision Classification: QUALITY NUMBER 10
  • Pitch Diameter: 1.2187 INCHES NOMINAL IN
  • Surface Treatment: ANODIZE OVERALL
  • Material: ALUMINUM ALLOY 2024 OVERALL
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Aluminum Alloy 2024 Overall construction
General Description

The Gear,spur, cataloged under National Stock Number 3020-00-004-2702, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Bae Systems Information and Electronic Systems Integration Inc.. Government technical data includes 14 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
NSN3020-00-004-2702
Primary Part Number450139
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerBae Systems Information and Electronic Systems Integration Inc.
StatusACTIVE
Pressure Angle20.0000 DEGREES
Teeth Quantity78
Style DesignatorHUBLESS
Precision ClassificationQUALITY NUMBER 10
Pitch Diameter1.2187 INCHES NOMINAL IN
Surface TreatmentANODIZE OVERALL
MaterialALUMINUM ALLOY 2024 OVERALL
Tooth FormSTANDARD
Bore Nominal Diameter0.438 INCHES BOTH ENDS IN
Material Document and ClassificationQQ-A-225/6,T351 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Body StylePLAIN, SOLID
Backlash DesignationGRADE C
Nominal Outside Diameter1.250 INCHES IN
Face Nominal Width1.120 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5935-01-442-2286918851 PIECE 74 INTERCHANGEABLE
Socket,plug-in Electronic Compon
Technology Dynamics, Inc. Dba Mid-Eastern Industries Division
Cross-Reference Index
Part NumberManufacturer
450139 PRIMARY Bae Systems Information and Electronic Systems Integration Inc. (USA)
Related Parts
5935-01-442-2286INTERCHANGEABLE
SOCKET,PLUG-IN ELECTRONIC COMPON
918851 PIECE 74

Frequently Asked Questions

What is NSN 3020-00-004-2702?

NSN 3020-00-004-2702 is a Gear,spur, manufactured by Bae Systems Information and Electronic Systems Integration Inc., classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-004-2702?

NSN 3020-00-004-2702 has 1 cross-referenced part number: 450139 (Bae Systems Information and Electronic Systems Integration Inc.).

What NSN replaces 3020-00-004-2702?

There is 1 known substitute for 3020-00-004-2702: 5935-01-442-2286. Verify interchangeability with system specifications before substitution.

What are the specifications of 450139?

Key specifications for 450139: Pressure Angle: 20.0000 DEGREES; Teeth Quantity: 78; Style Designator: HUBLESS; Precision Classification: QUALITY NUMBER 10. 14 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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