PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20503Gear,spur

Naval Inventory Control Point Mechanicsburg · NSN 3020-00-809-2402 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-809-2402 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-809-2402. Primary manufacturer part number: 20503.
Features
  • Gear,spur — FSC 3020
  • Pressure Angle: 20.0000 DEGREES
  • Tooth Form: STUB
  • Face Nominal Width: 1.400 INCHES IN
  • Hub Style Designator: PLAIN BOTH ENDS
  • Pitch Diameter: 13.5000 INCHES NOMINAL IN
  • Teeth Quantity: 135
  • Hub Nominal Diameter: 4.750 INCHES FIRST END IN
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Steel Overall construction
General Description

The Gear,spur, cataloged under National Stock Number 3020-00-809-2402, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 11 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
NSN3020-00-809-2402
Primary Part Number20503
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerNaval Inventory Control Point Mechanicsburg
StatusACTIVE
Pressure Angle20.0000 DEGREES
Tooth FormSTUB
Face Nominal Width1.400 INCHES IN
Hub Style DesignatorPLAIN BOTH ENDS
Pitch Diameter13.5000 INCHES NOMINAL IN
Teeth Quantity135
Hub Nominal Diameter4.750 INCHES FIRST END IN
MaterialSTEEL OVERALL
Style DesignatorPROTRUDING HUBS
Hub Nominal Diameter4.750 INCHES SECOND END IN
Nominal Overall Length2.000 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5130-00-018-5851 INTERCHANGEABLE
Bit,wire Wrapping Tool
3431-00-102-2318PRS45V44 INTERCHANGEABLE
Collet Body,welding Torch
Linde Gas & Equipment Inc. Dba Linde Gas & Equipment
5985-00-152-792310623-1 INTERCHANGEABLE
Attenuator,fixed
Alliant Techsystems Operations Llc Div Defense Electronic Systems
5975-00-177-6408TC724A INTERCHANGEABLE
Box Connector,electrical
Abb Installation Products Inc
5935-00-227-89951431373 INTERCHANGEABLE
Connector,receptacle,electrical
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
6130-00-233-7622 INTERCHANGEABLE
Rectifier,metallic
5985-00-313-31452-050-3 INTERCHANGEABLE
Line Section,radio Frequency Tra
Myat, Inc. Dba Myat Inc
4730-00-375-4870 INTERCHANGEABLE
Strainer Element,sediment
3120-00-737-1225638731 INTERCHANGEABLE
Bearing Half,sleeve
Am General Llc
5940-00-828-9012 INTERCHANGEABLE
Terminal,stud
Cross-Reference Index
Part NumberManufacturer
20503 PRIMARY Naval Inventory Control Point Mechanicsburg (USA)
Related Parts
5130-00-018-5851INTERCHANGEABLE
BIT,WIRE WRAPPING TOOL
3431-00-102-2318INTERCHANGEABLE
COLLET BODY,WELDING TORCH
PRS45V44
5985-00-152-7923INTERCHANGEABLE
ATTENUATOR,FIXED
10623-1
5975-00-177-6408INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
TC724A
5935-00-227-8995INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
1431373
6130-00-233-7622INTERCHANGEABLE
RECTIFIER,METALLIC
5985-00-313-3145INTERCHANGEABLE
LINE SECTION,RADIO FREQUENCY TRA
2-050-3
4730-00-375-4870INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
3120-00-737-1225INTERCHANGEABLE
BEARING HALF,SLEEVE
638731
5940-00-828-9012INTERCHANGEABLE
TERMINAL,STUD
6105-01-170-2264INTERCHANGEABLE
MOTOR,FRAME
20503
6850-01-321-0640INTERCHANGEABLE
TONER,INDIRECT ELECTROSTATIC PRO
EP-L CARTRIDGE

Frequently Asked Questions

What is NSN 3020-00-809-2402?

NSN 3020-00-809-2402 is a Gear,spur, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-809-2402?

NSN 3020-00-809-2402 has 1 cross-referenced part number: 20503 (Naval Inventory Control Point Mechanicsburg).

What NSN replaces 3020-00-809-2402?

There are 12 known substitutes for 3020-00-809-2402: 5130-00-018-5851, 3431-00-102-2318, 5985-00-152-7923 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20503?

Key specifications for 20503: Pressure Angle: 20.0000 DEGREES; Tooth Form: STUB; Face Nominal Width: 1.400 INCHES IN; Hub Style Designator: PLAIN BOTH ENDS. 11 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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