PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

23850Gear,spur

Napco International Llc Dba Napco International Inc · NSN 3020-00-712-8502 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-712-8502 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-712-8502. Primary manufacturer part number: 23850.
Features
  • Gear,spur — FSC 3020
  • Nominal Outside Diameter: 9.3700 INCHES IN
  • Bore Style: PLAIN BOTH ENDS
  • Pressure Angle: 20.0000 DEGREES
  • Pitch Diameter: 9.1250 INCHES NOMINAL IN
  • Bore Nominal Diameter: 4.4995 INCHES BOTH ENDS IN
  • Nominal Distance Between Body Face and Protruding Hub End: 0.3710 INCHES FIRST END IN
  • Style Designator: ONE PROTRUDING HUB, ONE FLUSH HUB
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Iron Cast Overall construction
General Description

The Gear,spur, cataloged under National Stock Number 3020-00-712-8502, 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 14 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-712-8502
Primary Part Number23850
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerNapco International Llc Dba Napco International Inc
StatusACTIVE
Nominal Outside Diameter9.3700 INCHES IN
Bore StylePLAIN BOTH ENDS
Pressure Angle20.0000 DEGREES
Pitch Diameter9.1250 INCHES NOMINAL IN
Bore Nominal Diameter4.4995 INCHES BOTH ENDS IN
Nominal Distance Between Body Face and Protruding Hub End0.3710 INCHES FIRST END IN
Style DesignatorONE PROTRUDING HUB, ONE FLUSH HUB
Tooth FormSTANDARD
MaterialIRON CAST OVERALL
Body StyleWEBBED, SOLID
Hub Nominal Diameter5.3750 INCHES BOTH ENDS IN
Face Nominal Width1.250 INCHES IN
Teeth Quantity73
Hub Style DesignatorPLAIN BOTH ENDS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
4730-00-111-121723850 INTERCHANGEABLE
Strainer Element,sediment
Pall Aeropower Corporation
5998-00-179-8115 INTERCHANGEABLE
Circuit Card Assembly
5975-00-355-40563129 INTERCHANGEABLE
Elbow,electrical Conduit
Champion Aerospace Llc
2910-00-758-236633109 INTERCHANGEABLE
Filter Element,fluid
Wix Corp
4310-00-791-138023850 INTERCHANGEABLE
Impeller Assembly,blower
Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots
5315-01-111-264523850 INTERCHANGEABLE
Key,machine
Paccar Winch Inc Dba Paccar Winch Division
3415-01-260-742823-850 INTERCHANGEABLE
Grinding Machine,utility
Delta Intl Machinery Corp
1630-01-338-883723850 INTERCHANGEABLE
Disc,brake
Nasco Aircraft Brake, Inc. Dba Nasco Aircraft Brake Inc Div Nasco
3415-01-382-0873 INTERCHANGEABLE
Grinding and Buffing Machine,uti
Cross-Reference Index
Part NumberManufacturer
157D1-0724 Kurz & Root Generator Company, Llc (USA)
23850 PRIMARY Napco International Llc Dba Napco International Inc (USA)
Related Parts
4730-00-111-1217INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
23850
5998-00-179-8115INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
5975-00-355-4056INTERCHANGEABLE
ELBOW,ELECTRICAL CONDUIT
3129
2910-00-758-2366INTERCHANGEABLE
FILTER ELEMENT,FLUID
33109
4310-00-791-1380INTERCHANGEABLE
IMPELLER ASSEMBLY,BLOWER
23850
5315-01-111-2645INTERCHANGEABLE
KEY,MACHINE
23850
3415-01-260-7428INTERCHANGEABLE
GRINDING MACHINE,UTILITY
23-850
1630-01-338-8837INTERCHANGEABLE
DISC,BRAKE
23850
3415-01-382-0873INTERCHANGEABLE
GRINDING AND BUFFING MACHINE,UTI

Frequently Asked Questions

What is NSN 3020-00-712-8502?

NSN 3020-00-712-8502 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 3020-00-712-8502?

NSN 3020-00-712-8502 has 2 cross-referenced part numbers: 157D1-0724 (Kurz & Root Generator Company, Llc), 23850 (Napco International Llc Dba Napco International Inc).

What NSN replaces 3020-00-712-8502?

There are 9 known substitutes for 3020-00-712-8502: 4730-00-111-1217, 5998-00-179-8115, 5975-00-355-4056 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 23850?

Key specifications for 23850: Nominal Outside Diameter: 9.3700 INCHES IN; Bore Style: PLAIN BOTH ENDS; Pressure Angle: 20.0000 DEGREES; Pitch Diameter: 9.1250 INCHES NOMINAL IN. 14 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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