PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

413959-3Gear,helical

Raytheon Company Dba Raytheon · NSN 3020-00-656-3074 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-656-3074 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-656-3074. Primary manufacturer part number: 413959-3.
Features
  • Gear,helical — FSC 3020
  • Teeth Type: SINGLE HELIX
  • Style Designator: PROTRUDING HUB
  • Nominal Distance Between Body Face and Protruding Hub End: 0.250 INCHES FIRST END IN
  • Face Nominal Width: 0.188 INCHES IN
  • Pressure Angle: 20.0000 DEGREES
  • Bore Nominal Diameter: 0.2500 INCHES BOTH ENDS IN
  • Pitch Diameter: 1.1784 INCHES NOMINAL IN
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Aluminum Alloy Overall construction
General Description

The Gear,helical, cataloged under National Stock Number 3020-00-656-3074, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Raytheon Company Dba Raytheon. Government technical data includes 20 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-656-3074
Primary Part Number413959-3
Item NameGear,helical
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerRaytheon Company Dba Raytheon
StatusACTIVE
Teeth TypeSINGLE HELIX
Style DesignatorPROTRUDING HUB
Nominal Distance Between Body Face and Protruding Hub End0.250 INCHES FIRST END IN
Face Nominal Width0.188 INCHES IN
Pressure Angle20.0000 DEGREES
Bore Nominal Diameter0.2500 INCHES BOTH ENDS IN
Pitch Diameter1.1784 INCHES NOMINAL IN
Tooth DirectionRIGHT
Hub Style DesignatorPINNED FIRST END
Body StylePLAIN, SOLID
Surface TreatmentANODIZE HUB
Tooth FormSTANDARD
Bore StylePLAIN BOTH ENDS
Nominal Outside Diameter1.2200 INCHES IN
Helix Angle45.0000 DEGREES
Hub Nominal Diameter0.500 INCHES FIRST END IN
Surface TreatmentANODIZE BODY
Teeth Quantity40
Furnished Items and Quantity1 SETSCREW
MaterialALUMINUM ALLOY OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5935-01-506-1857413959-3 INTERCHANGEABLE
Connector,plug,electrical
Te Connectivity Corporation
2995-01-668-64661011750-4 INTERCHANGEABLE
Control Unit,supervisory,turbine
Hamilton Sundstrand Corporation Dba Collins Aerospace
Cross-Reference Index
Part NumberManufacturer
413595-3 Designatronics Incorporated Div Sterling Instruments Div (USA)
S1086ZR0147 Designatronics Incorporated Div Sterling Instruments Div (USA)
494602-1 Raytheon Company Dba Raytheon (USA)
413959-3 PRIMARY Raytheon Company Dba Raytheon (USA)
Related Parts
5935-01-506-1857INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
413959-3
2995-01-668-6466INTERCHANGEABLE
CONTROL UNIT,SUPERVISORY,TURBINE
1011750-4

Frequently Asked Questions

What is NSN 3020-00-656-3074?

NSN 3020-00-656-3074 is a Gear,helical, manufactured by Raytheon Company Dba Raytheon, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-656-3074?

NSN 3020-00-656-3074 has 4 cross-referenced part numbers: 413595-3 (Designatronics Incorporated Div Sterling Instruments Div), S1086ZR0147 (Designatronics Incorporated Div Sterling Instruments Div), 494602-1 (Raytheon Company Dba Raytheon), 413959-3 (Raytheon Company Dba Raytheon).

What NSN replaces 3020-00-656-3074?

There are 2 known substitutes for 3020-00-656-3074: 5935-01-506-1857, 2995-01-668-6466. Verify interchangeability with system specifications before substitution.

What are the specifications of 413959-3?

Key specifications for 413959-3: Teeth Type: SINGLE HELIX; Style Designator: PROTRUDING HUB; Nominal Distance Between Body Face and Protruding Hub End: 0.250 INCHES FIRST END IN; Face Nominal Width: 0.188 INCHES IN. 20 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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