PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

56128Gear,spur

Kleinschmidt Inc · NSN 3020-00-523-8663 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-523-8663 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-523-8663. Primary manufacturer part number: 56128.
Features
  • Gear,spur — FSC 3020
  • Body Style: WEBBED, SOLID
  • Pitch Diameter: 0.5000 INCHES NOMINAL IN
  • Teeth Quantity: 32
  • Material: STEEL OVERALL
  • Hub Style Designator: PLAIN FIRST END
  • Tooth Form: STANDARD
  • Style Designator: PROTRUDING HUB, RECESSED BODY
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 3020-00-523-8663, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Kleinschmidt Inc. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-523-8663
Primary Part Number56128
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerKleinschmidt Inc
StatusACTIVE
Body StyleWEBBED, SOLID
Pitch Diameter0.5000 INCHES NOMINAL IN
Teeth Quantity32
MaterialSTEEL OVERALL
Hub Style DesignatorPLAIN FIRST END
Tooth FormSTANDARD
Style DesignatorPROTRUDING HUB, RECESSED BODY
Bore Nominal Diameter0.1875 INCHES BOTH ENDS IN
Nominal Outside Diameter0.5312 INCHES IN
Hub Nominal Diameter0.245 INCHES FIRST END IN
Bore StylePLAIN BOTH ENDS
Surface TreatmentPASSIVATE OVERALL
Face Nominal Width0.069 INCHES IN
Nominal Distance Between Body Face and Recessed Hub End0.029 INCHES SECOND END IN
Nominal Distance Between Body Face and Protruding Hub End0.059 INCHES FIRST END IN
Pressure Angle20.0000 DEGREES
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5905-00-407-2567138C211H06 INTERCHANGEABLE
Resistor Network,fixed,wire Woun
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
4730-00-821-02517974046 INTERCHANGEABLE
Clamp,hose
U S Army Tank Automotive Command Amsta-Im-Mm
5340-01-101-8262COV-1309Z2 INTERCHANGEABLE
Clamp,loop
Kickhaefer Manufacturing Company, Llc Dba Kickhaefer Manufacturing Co
5905-01-113-0341 INTERCHANGEABLE
Resistor,variable,wire Wound,non
5340-01-149-524556128 INTERCHANGEABLE
Pad
Alliance Laundry Systems Llc
5120-01-431-1120 INTERCHANGEABLE
Key Set,socket Head Screw
Cross-Reference Index
Part NumberManufacturer
56128 Kleinschmidt Inc (USA)
SMD187378 Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
56128A Kleinschmidt Inc (USA)
Related Parts
5905-00-407-2567INTERCHANGEABLE
RESISTOR NETWORK,FIXED,WIRE WOUN
138C211H06
4730-00-821-0251INTERCHANGEABLE
CLAMP,HOSE
7974046
5340-01-101-8262INTERCHANGEABLE
CLAMP,LOOP
COV-1309Z2
5905-01-113-0341INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
5340-01-149-5245INTERCHANGEABLE
PAD
56128
5120-01-431-1120INTERCHANGEABLE
KEY SET,SOCKET HEAD SCREW

Frequently Asked Questions

What is NSN 3020-00-523-8663?

NSN 3020-00-523-8663 is a Gear,spur, manufactured by Kleinschmidt Inc, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-523-8663?

NSN 3020-00-523-8663 has 3 cross-referenced part numbers: 56128 (Kleinschmidt Inc), SMD187378 (Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir), 56128A (Kleinschmidt Inc).

What NSN replaces 3020-00-523-8663?

There are 6 known substitutes for 3020-00-523-8663: 5905-00-407-2567, 4730-00-821-0251, 5340-01-101-8262 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 56128?

Key specifications for 56128: Body Style: WEBBED, SOLID; Pitch Diameter: 0.5000 INCHES NOMINAL IN; Teeth Quantity: 32; Material: STEEL OVERALL. 16 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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