PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3531Gear,spur

L3harris Technologies, Inc. Div Space and Airborne Systems · NSN 3020-00-005-5014 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-005-5014 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-005-5014. Primary manufacturer part number: 3531.
Features
  • Gear,spur — FSC 3020
  • Surface Treatment: PASSIVATE OVERALL
  • Bore Style: PLAIN BOTH ENDS
  • Hub Nominal Diameter: 0.281 INCHES FIRST END IN
  • Pitch Diameter: 0.3271 INCHES MINIMUM AND 0.3281 INCHES MAXIMUM IN
  • Pressure Angle: 20.0000 DEGREES
  • Teeth Quantity: 21
  • Nominal Distance Between Body Face and Protruding Hub End: 0.2500 INCHES FIRST END IN
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Steel Comp 303 Overall construction
General Description

The Gear,spur, cataloged under National Stock Number 3020-00-005-5014, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is L3harris Technologies, Inc. Div Space and Airborne Systems. Government technical data includes 16 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-005-5014
Primary Part Number3531
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerL3harris Technologies, Inc. Div Space and Airborne Systems
StatusACTIVE
Surface TreatmentPASSIVATE OVERALL
Bore StylePLAIN BOTH ENDS
Hub Nominal Diameter0.281 INCHES FIRST END IN
Pitch Diameter0.3271 INCHES MINIMUM AND 0.3281 INCHES MAXIMUM IN
Pressure Angle20.0000 DEGREES
Teeth Quantity21
Nominal Distance Between Body Face and Protruding Hub End0.2500 INCHES FIRST END IN
Body StylePLAIN, SOLID
MaterialSTEEL COMP 303 OVERALL
Style DesignatorPROTRUDING HUB
Bore Nominal Diameter0.18715 INCHES BOTH ENDS IN
Material Document and ClassificationQQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Hub Style DesignatorPINNED FIRST END
Tooth FormSTANDARD
Nominal Outside Diameter0.3579 INCHES IN
Face Nominal Width0.125 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5950-00-051-69822270606 INTERCHANGEABLE
Transformer,power
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5136-00-239-2769400088 INTERCHANGEABLE
Die,thread Cutting
Greenfield Industries Inc
5815-00-472-82543531 INTERCHANGEABLE
Cover,case
Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service
5905-00-642-53623531 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
Cts Corp Electromechanical Div
5330-00-702-67694993781 INTERCHANGEABLE
Seal,plain Encased
Kalmar AC Inc
5950-00-910-92566140026-13 INTERCHANGEABLE
Transformer,radio Frequency
Viking Technologies, Ltd.
4920-00-918-49583-5-3-1 INTERCHANGEABLE
Shaft,safety
Celtech Corporation Div Use CAGE 65552 for All Orders
5955-00-937-46833531 INTERCHANGEABLE
Oscillator Subassembly
Bae Systems Technology Solutions & Services Inc.
6530-00-978-6070 INTERCHANGEABLE
Irrigation Kit,patient
5999-01-102-7489P21346-001-01 INTERCHANGEABLE
Clip,electrical
Us Army Aviation and Missile Command
Cross-Reference Index
Part NumberManufacturer
3531 PRIMARY L3harris Technologies, Inc. Div Space and Airborne Systems (USA)
Related Parts
5950-00-051-6982INTERCHANGEABLE
TRANSFORMER,POWER
2270606
5136-00-239-2769INTERCHANGEABLE
DIE,THREAD CUTTING
400088
5815-00-472-8254INTERCHANGEABLE
COVER,CASE
3531
5905-00-642-5362INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
3531
5330-00-702-6769INTERCHANGEABLE
SEAL,PLAIN ENCASED
4993781
5950-00-910-9256INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
6140026-13
4920-00-918-4958INTERCHANGEABLE
SHAFT,SAFETY
3-5-3-1
5955-00-937-4683INTERCHANGEABLE
OSCILLATOR SUBASSEMBLY
3531
6530-00-978-6070INTERCHANGEABLE
IRRIGATION KIT,PATIENT
5999-01-102-7489INTERCHANGEABLE
CLIP,ELECTRICAL
P21346-001-01
5905-01-135-2848INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
4045219-4
5920-01-153-7487INTERCHANGEABLE
FUSEHOLDER,BLOCK
3531

Frequently Asked Questions

What is NSN 3020-00-005-5014?

NSN 3020-00-005-5014 is a Gear,spur, manufactured by L3harris Technologies, Inc. Div Space and Airborne Systems, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-005-5014?

NSN 3020-00-005-5014 has 1 cross-referenced part number: 3531 (L3harris Technologies, Inc. Div Space and Airborne Systems).

What NSN replaces 3020-00-005-5014?

There are 12 known substitutes for 3020-00-005-5014: 5950-00-051-6982, 5136-00-239-2769, 5815-00-472-8254 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3531?

Key specifications for 3531: Surface Treatment: PASSIVATE OVERALL; Bore Style: PLAIN BOTH ENDS; Hub Nominal Diameter: 0.281 INCHES FIRST END IN; Pitch Diameter: 0.3271 INCHES MINIMUM AND 0.3281 INCHES MAXIMUM IN. 16 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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