PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5865Gear Cluster

Eaton Corp Transmission Div · NSN 3020-00-350-6561 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-350-6561 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-350-6561. Primary manufacturer part number: 5865.
Features
  • Gear Cluster — FSC 3020
  • Nominal Overall Length: 6.058 INCHES IN
  • Hub Nominal Length: 0.3125 INCHES SECOND END IN
  • Attachment Method: MOUNTING HOLE
  • Hub Nominal Length: 0.188 INCHES BETWEEN FIRST AND SECOND GEAR IN
  • Construction: SOLID
  • Hub Style Designator: PLAIN BOTH ENDS
  • Hub Nominal Diameter: 2.500 INCHES SECOND END IN
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Steel Comp 8620 Overall construction
General Description

The Gear Cluster, cataloged under National Stock Number 3020-00-350-6561, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Eaton Corp Transmission Div. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 11 manufacturers, 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
NSN3020-00-350-6561
Primary Part Number5865
Item NameGear Cluster
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerEaton Corp Transmission Div
StatusACTIVE
Nominal Overall Length6.058 INCHES IN
Hub Nominal Length0.3125 INCHES SECOND END IN
Attachment MethodMOUNTING HOLE
Hub Nominal Length0.188 INCHES BETWEEN FIRST AND SECOND GEAR IN
ConstructionSOLID
Hub Style DesignatorPLAIN BOTH ENDS
Hub Nominal Diameter2.500 INCHES SECOND END IN
Nominal Outside Diameter3.154 INCHES FIRST GEAR IN
Hub Nominal Length3.6190 INCHES FIRST END IN
MaterialSTEEL COMP 8620 OVERALL
Hub Nominal Diameter2.734 INCHES BETWEEN FIRST AND SECOND GEAR IN
Design TypeSPUR FIRST GEAR
Design TypeSPUR SECOND GEAR
Nominal Outside Diameter6.571 INCHES SECOND GEAR IN
Hub Nominal Diameter2.718 INCHES FIRST END IN
Bore StylePLAIN BOTH ENDS
Hub Style DesignatorPLAIN BETWEEN FIRST AND SECOND GEAR
Bore Nominal Diameter1.856 INCHES BOTH ENDS IN
Material Document and ClassificationSAE 8620 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5960-00-262-0174 INTERCHANGEABLE
Electron Tube
5950-00-552-13448024244 INTERCHANGEABLE
Transformer,power
Us Army Aviation and Missile Command
5330-00-641-21815865 INTERCHANGEABLE
Seal,plain Encased
Federal-Mogul Corp Government Sales Dept
5365-00-737-8924395426 INTERCHANGEABLE
Spacer,seal,bearing
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
5910-00-880-21855865000Y5U0 474Z INTERCHANGEABLE
Capacitor,fixed,ceramic Dielectr
Murata Erie North America Inc Headquarters and Georgia Opns
5962-01-033-074148K INTERCHANGEABLE
Microcircuit,linear
Analog Devices, Inc. Div Corporate Headquarters
6515-01-046-777811102 INTERCHANGEABLE
Gloves,surgeons'
Ansell Healthcare Products Llc Dba Ansell Div Ansell Healthcare
3455-01-054-1803 INTERCHANGEABLE
Cutter,milling,end
3120-01-303-1563NC395426 INTERCHANGEABLE
Bushing,sleeve
Leslie Controls, Inc. Dba Leslie Controls Inc
5940-01-303-74175865 INTERCHANGEABLE
Terminal,quick Disconnect
Hdt Expeditionary Systems Inc
Cross-Reference Index
Part NumberManufacturer
5865 Eaton Corp Transmission Div (USA)
231831 Brockway Motor Trucks Div of Mack Trucks Inc (USA)
BB22170 Spalla Inc (USA)
TG5865 Marmon Group Inc the Active Gear Co Div (USA)
86FT51 Oshkosh Corp (USA)
86FT51 Oshkosh Defense Llc (USA)
BB22170 Diamond Reo Truck Co (USA)
5865 Corbitt Co Inc (USA)
5865 Kaitlin Corp (USA)
395426 White Motor Corp (USA)
41851 Terex Corp (USA)
Related Parts
5960-00-262-0174INTERCHANGEABLE
ELECTRON TUBE
5950-00-552-1344INTERCHANGEABLE
TRANSFORMER,POWER
8024244
5330-00-641-2181INTERCHANGEABLE
SEAL,PLAIN ENCASED
5865
5365-00-737-8924INTERCHANGEABLE
SPACER,SEAL,BEARING
395426
5910-00-880-2185INTERCHANGEABLE
CAPACITOR,FIXED,CERAMIC DIELECTR
5865000Y5U0 474Z
5962-01-033-0741INTERCHANGEABLE
MICROCIRCUIT,LINEAR
48K
6515-01-046-7778INTERCHANGEABLE
GLOVES,SURGEONS'
11102
3455-01-054-1803INTERCHANGEABLE
CUTTER,MILLING,END
3120-01-303-1563INTERCHANGEABLE
BUSHING,SLEEVE
NC395426
5940-01-303-7417INTERCHANGEABLE
TERMINAL,QUICK DISCONNECT
5865
6350-01-461-3877INTERCHANGEABLE
ALARM,AUDIBLE-VISUAL
41-851
7025-01-554-2858INTERCHANGEABLE
SUPPLEMENTARY KIT,COMPUTER

Frequently Asked Questions

What is NSN 3020-00-350-6561?

NSN 3020-00-350-6561 is a Gear Cluster, manufactured by Eaton Corp Transmission Div, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-350-6561?

NSN 3020-00-350-6561 has 11 cross-referenced part numbers: 5865 (Eaton Corp Transmission Div), 231831 (Brockway Motor Trucks Div of Mack Trucks Inc), BB22170 (Spalla Inc), TG5865 (Marmon Group Inc the Active Gear Co Div), 86FT51 (Oshkosh Corp) and 6 more.

What NSN replaces 3020-00-350-6561?

There are 12 known substitutes for 3020-00-350-6561: 5960-00-262-0174, 5950-00-552-1344, 5330-00-641-2181 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 5865?

Key specifications for 5865: Nominal Overall Length: 6.058 INCHES IN; Hub Nominal Length: 0.3125 INCHES SECOND END IN; Attachment Method: MOUNTING HOLE; Hub Nominal Length: 0.188 INCHES BETWEEN FIRST AND SECOND GEAR IN. 19 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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