PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20504Gear,spur

Naval Inventory Control Point Mechanicsburg · NSN 3020-00-784-0866 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-784-0866 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-784-0866. Primary manufacturer part number: 20504.
Features
  • Gear,spur — FSC 3020
  • Pitch Diameter: 4.5000 INCHES NOMINAL IN
  • Body Style: WEBBED, SOLID
  • Teeth Quantity: 45
  • Face Nominal Width: 1.600 INCHES IN
  • Pressure Angle: 20.0000 DEGREES
  • Tooth Form: STANDARD
  • Style Designator: PROTRUDING HUBS
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
General Description

The Gear,spur, cataloged under National Stock Number 3020-00-784-0866, 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 9 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. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-784-0866
Primary Part Number20504
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerNaval Inventory Control Point Mechanicsburg
StatusACTIVE
Pitch Diameter4.5000 INCHES NOMINAL IN
Body StyleWEBBED, SOLID
Teeth Quantity45
Face Nominal Width1.600 INCHES IN
Pressure Angle20.0000 DEGREES
Tooth FormSTANDARD
Style DesignatorPROTRUDING HUBS
Nominal Overall Length9.280 INCHES IN
Bore Nominal Diameter1.000 INCHES BOTH ENDS IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
3431-00-123-668445V45 INTERCHANGEABLE
Collet Body,welding Torch
Esab Group, Inc., the Dba Esab Welding and Cutting Products Div Esab Welding and Cuttng
5342-00-211-9791 INTERCHANGEABLE
Hook Installation Kit
5950-00-256-8971CE213246 INTERCHANGEABLE
Transformer,power
National Security Agency
3110-00-554-5406105ATF INTERCHANGEABLE
Bearing,ball,annular
Fag Bearings Corporation
5930-00-696-28222050-4 INTERCHANGEABLE
Switch,pressure
Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S
5315-01-068-697920504 INTERCHANGEABLE
Rod
Barksdale, Inc
2815-01-074-827322205 INTERCHANGEABLE
Injector Assembly,f
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
5940-01-230-8545 INTERCHANGEABLE
Terminal,v Bus
5330-01-399-165520504 INTERCHANGEABLE
Retainer,packing
Triumph Actuation Systems - Valencia, Inc. Dba Triumph Actuation Systems - Valencia Inc Div Triumph Actuation Systems-Val
5985-01-541-559620504 INTERCHANGEABLE
Waveguide Assembly
Fisica Applied Technologies, Inc. Div Randtron Antenna Systems
Cross-Reference Index
Part NumberManufacturer
20504 PRIMARY Naval Inventory Control Point Mechanicsburg (USA)
Related Parts
3431-00-123-6684INTERCHANGEABLE
COLLET BODY,WELDING TORCH
45V45
5342-00-211-9791INTERCHANGEABLE
HOOK INSTALLATION KIT
5950-00-256-8971INTERCHANGEABLE
TRANSFORMER,POWER
CE213246
3110-00-554-5406INTERCHANGEABLE
BEARING,BALL,ANNULAR
105ATF
5930-00-696-2822INTERCHANGEABLE
SWITCH,PRESSURE
2050-4
5315-01-068-6979INTERCHANGEABLE
ROD
20504
2815-01-074-8273INTERCHANGEABLE
INJECTOR ASSEMBLY,F
22205
5940-01-230-8545INTERCHANGEABLE
TERMINAL,V BUS
5330-01-399-1655INTERCHANGEABLE
RETAINER,PACKING
20504
5985-01-541-5596INTERCHANGEABLE
WAVEGUIDE ASSEMBLY
20504
5920-01-693-2327INTERCHANGEABLE
FUSEHOLDER,BLOCK
20504

Frequently Asked Questions

What is NSN 3020-00-784-0866?

NSN 3020-00-784-0866 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 3020-00-784-0866?

NSN 3020-00-784-0866 has 1 cross-referenced part number: 20504 (Naval Inventory Control Point Mechanicsburg).

What NSN replaces 3020-00-784-0866?

There are 11 known substitutes for 3020-00-784-0866: 3431-00-123-6684, 5342-00-211-9791, 5950-00-256-8971 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20504?

Key specifications for 20504: Pitch Diameter: 4.5000 INCHES NOMINAL IN; Body Style: WEBBED, SOLID; Teeth Quantity: 45; Face Nominal Width: 1.600 INCHES IN. 9 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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