PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

61278Gear,spur

Textron Lycoming Inc Williamsport Plant · NSN 3020-00-200-1133 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-200-1133 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-200-1133. Primary manufacturer part number: 61278.
Features
  • Gear,spur — FSC 3020
  • Pitch Diameter: 3.2500 INCHES NOMINAL IN
  • Nominal Overall Length: 1.063 INCHES IN
  • Nominal Distance Between Body Face and Protruding Hub End: 0.670 INCHES SECOND END IN
  • Hub Nominal Diameter: 0.900 INCHES BOTH ENDS IN
  • Bore Nominal Diameter: 0.609 INCHES BOTH ENDS IN
  • Teeth Quantity: 26
  • Face Nominal Width: 0.270 INCHES IN
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 3020-00-200-1133, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Textron Lycoming Inc Williamsport Plant. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3020-00-200-1133
Primary Part Number61278
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerTextron Lycoming Inc Williamsport Plant
StatusCANCELLED
Pitch Diameter3.2500 INCHES NOMINAL IN
Nominal Overall Length1.063 INCHES IN
Nominal Distance Between Body Face and Protruding Hub End0.670 INCHES SECOND END IN
Hub Nominal Diameter0.900 INCHES BOTH ENDS IN
Bore Nominal Diameter0.609 INCHES BOTH ENDS IN
Teeth Quantity26
Face Nominal Width0.270 INCHES IN
Hardness Rating77.0 ROCKWELL SUPERFICIAL 30-N NOMINAL TEETH
Bore StylePLAIN BOTH ENDS
MaterialSTEEL OVERALL
Tooth FormSTANDARD
Body StyleWEBBED, OFFSET, SOLID
Style DesignatorPROTRUDING HUBS
Pressure Angle20.0000 DEGREES
Nominal Outside Diameter3.450 INCHES IN
Hardness Rating20.0 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 40.0 ROCKWELL SUPERFICIAL 30-N MAXIMUM HUB
Hub Style DesignatorPLAIN BOTH ENDS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5920-01-033-8532CG2-230L INTERCHANGEABLE
Arrester,electrical Surge
C P Clare Corporation
3120-01-120-687561278 INTERCHANGEABLE
Bearing,sleeve
Parker Hannifin Corporation Div Hydraulic Systems Division
Cross-Reference Index
Part NumberManufacturer
61278 PRIMARY Textron Lycoming Inc Williamsport Plant (USA)
Related Parts
5920-01-033-8532INTERCHANGEABLE
ARRESTER,ELECTRICAL SURGE
CG2-230L
3120-01-120-6875INTERCHANGEABLE
BEARING,SLEEVE
61278

Frequently Asked Questions

What is NSN 3020-00-200-1133?

NSN 3020-00-200-1133 is a Gear,spur, manufactured by Textron Lycoming Inc Williamsport Plant, classified under FSC 3020 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3020-00-200-1133?

NSN 3020-00-200-1133 has 1 cross-referenced part number: 61278 (Textron Lycoming Inc Williamsport Plant).

What NSN replaces 3020-00-200-1133?

There are 2 known substitutes for 3020-00-200-1133: 5920-01-033-8532, 3120-01-120-6875. Verify interchangeability with system specifications before substitution.

What are the specifications of 61278?

Key specifications for 61278: Pitch Diameter: 3.2500 INCHES NOMINAL IN; Nominal Overall Length: 1.063 INCHES IN; Nominal Distance Between Body Face and Protruding Hub End: 0.670 INCHES SECOND END IN; Hub Nominal Diameter: 0.900 INCHES BOTH ENDS IN. 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3020-00-200-1133 still in active supply?

NSN 3020-00-200-1133 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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