PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

23851Gear,spur

Napco International Llc Dba Napco International Inc · NSN 3020-00-712-8503 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-712-8503 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-712-8503. Primary manufacturer part number: 23851.
Features
  • Gear,spur — FSC 3020
  • Hub Style Designator: PLAIN BOTH ENDS
  • Hub Nominal Diameter: 1.1250 INCHES BOTH ENDS IN
  • Material: STEEL OVERALL
  • Teeth Quantity: 20
  • Face Nominal Width: 1.125 INCHES IN
  • Nominal Outside Diameter: 2.9062 INCHES IN
  • Style Designator: PROTRUDING HUBS
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 3020-00-712-8503, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Napco International Llc Dba Napco International Inc. Government technical data includes 7 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-712-8503
Primary Part Number23851
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerNapco International Llc Dba Napco International Inc
StatusACTIVE
Hub Style DesignatorPLAIN BOTH ENDS
Hub Nominal Diameter1.1250 INCHES BOTH ENDS IN
MaterialSTEEL OVERALL
Teeth Quantity20
Face Nominal Width1.125 INCHES IN
Nominal Outside Diameter2.9062 INCHES IN
Style DesignatorPROTRUDING HUBS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5340-00-813-5827 INTERCHANGEABLE
Handle,bow
1630-01-338-706523851 INTERCHANGEABLE
Stator,disc Brake
Nasco Aircraft Brake, Inc. Dba Nasco Aircraft Brake Inc Div Nasco
1730-01-359-2838 INTERCHANGEABLE
Half,coupler
Cross-Reference Index
Part NumberManufacturer
157D1-1175 Kurz & Root Generator Company, Llc (USA)
23851 PRIMARY Napco International Llc Dba Napco International Inc (USA)
Related Parts
5340-00-813-5827INTERCHANGEABLE
HANDLE,BOW
1630-01-338-7065INTERCHANGEABLE
STATOR,DISC BRAKE
23851
1730-01-359-2838INTERCHANGEABLE
HALF,COUPLER

Frequently Asked Questions

What is NSN 3020-00-712-8503?

NSN 3020-00-712-8503 is a Gear,spur, manufactured by Napco International Llc Dba Napco International Inc, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-712-8503?

NSN 3020-00-712-8503 has 2 cross-referenced part numbers: 157D1-1175 (Kurz & Root Generator Company, Llc), 23851 (Napco International Llc Dba Napco International Inc).

What NSN replaces 3020-00-712-8503?

There are 3 known substitutes for 3020-00-712-8503: 5340-00-813-5827, 1630-01-338-7065, 1730-01-359-2838. Verify interchangeability with system specifications before substitution.

What are the specifications of 23851?

Key specifications for 23851: Hub Style Designator: PLAIN BOTH ENDS; Hub Nominal Diameter: 1.1250 INCHES BOTH ENDS IN; Material: STEEL OVERALL; Teeth Quantity: 20. 7 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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