PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

CM23Gear Cluster

Gilbarco Inc. Dba Gilbarco Inc · NSN 3020-00-086-9799 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-086-9799 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-086-9799. Primary manufacturer part number: CM23.
Features
  • Gear Cluster — FSC 3020
  • Material: STEEL COMP 8620 OVERALL
  • Hub Nominal Diameter: 1.750 INCHES BETWEEN FIRST AND SECOND GEAR IN
  • Nominal Distance From Bore Center to Keyway Bottom: 0.6571 INCHES BOTH ENDS IN
  • Nominal Overall Length: 1.562 INCHES IN
  • Design Type: HELICAL SECOND GEAR
  • Hub Nominal Length: 0.188 INCHES BETWEEN FIRST AND SECOND GEAR IN
  • Hub Nominal Length: 0.1875 INCHES FIRST 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 3020-00-086-9799, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Gilbarco Inc. Dba Gilbarco Inc. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 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
NSN3020-00-086-9799
Primary Part NumberCM23
Item NameGear Cluster
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerGilbarco Inc. Dba Gilbarco Inc
StatusACTIVE
MaterialSTEEL COMP 8620 OVERALL
Hub Nominal Diameter1.750 INCHES BETWEEN FIRST AND SECOND GEAR IN
Nominal Distance From Bore Center to Keyway Bottom0.6571 INCHES BOTH ENDS IN
Nominal Overall Length1.562 INCHES IN
Design TypeHELICAL SECOND GEAR
Hub Nominal Length0.188 INCHES BETWEEN FIRST AND SECOND GEAR IN
Hub Nominal Length0.1875 INCHES FIRST END IN
Hub Style DesignatorPLAIN BETWEEN FIRST AND SECOND GEAR
Bore StyleW/ KEYWAY BOTH ENDS
Hub Style DesignatorPLAIN FIRST END
Nominal Outside Diameter2.264 INCHES FIRST GEAR IN
Material Document and ClassificationMIL-S-20166 C TYPE A,GRADE HT MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
ConstructionSOLID
Design TypeHELICAL FIRST GEAR
Hub Nominal Diameter1.375 INCHES FIRST END IN
Bore Nominal Diameter0.9842 INCHES BOTH ENDS IN
Keyway Nominal Width0.250 INCHES BOTH ENDS IN
Nominal Outside Diameter2.264 INCHES SECOND GEAR IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4730-00-389-8243475896 INTERCHANGEABLE
Connector,multiple,fluid Pressur
General Motors Llc Dba General Motors Llc
5120-01-398-9138 INTERCHANGEABLE
Wrench,box and Open End,combinat
Cross-Reference Index
Part NumberManufacturer
CM23 PRIMARY Gilbarco Inc. Dba Gilbarco Inc (USA)
3169403 Naval Ship Systems Command (USA)
Related Parts
4730-00-389-8243INTERCHANGEABLE
CONNECTOR,MULTIPLE,FLUID PRESSUR
475896
5120-01-398-9138INTERCHANGEABLE
WRENCH,BOX AND OPEN END,COMBINAT

Frequently Asked Questions

What is NSN 3020-00-086-9799?

NSN 3020-00-086-9799 is a Gear Cluster, manufactured by Gilbarco Inc. Dba Gilbarco Inc, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-086-9799?

NSN 3020-00-086-9799 has 2 cross-referenced part numbers: CM23 (Gilbarco Inc. Dba Gilbarco Inc), 3169403 (Naval Ship Systems Command).

What NSN replaces 3020-00-086-9799?

There are 2 known substitutes for 3020-00-086-9799: 4730-00-389-8243, 5120-01-398-9138. Verify interchangeability with system specifications before substitution.

What are the specifications of CM23?

Key specifications for CM23: Material: STEEL COMP 8620 OVERALL; Hub Nominal Diameter: 1.750 INCHES BETWEEN FIRST AND SECOND GEAR IN; Nominal Distance From Bore Center to Keyway Bottom: 0.6571 INCHES BOTH ENDS IN; Nominal Overall Length: 1.562 INCHES IN. 18 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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