PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A3323Gear,spur

Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic · NSN 3020-00-294-8380 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-294-8380 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-294-8380. Primary manufacturer part number: A3323.
Features
  • Gear,spur — FSC 3020
  • Bore Nominal Diameter: 3.149 INCHES COUNTER BORE SECOND END IN
  • Counterbore Nominal Diameter: 4.000 INCHES COUNTER BORE SECOND END IN
  • Hardness Rating: 59.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM OVERALL
  • Pressure Angle: 20.0000 DEGREES
  • Hub Style Designator: PLAIN FIRST END
  • Pitch Diameter: 5.0000 INCHES NOMINAL IN
  • Body Style: PLAIN, SOLID
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Steel Comp 4615 Overall construction
General Description

The Gear,spur, cataloged under National Stock Number 3020-00-294-8380, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic. Government technical data includes 18 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: Active.

Technical Specifications
ParameterValue
NSN3020-00-294-8380
Primary Part NumberA3323
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerTwin Disc, Incorporated Dba Twin Disc Mid-Atlantic
StatusACTIVE
Bore Nominal Diameter3.149 INCHES COUNTER BORE SECOND END IN
Counterbore Nominal Diameter4.000 INCHES COUNTER BORE SECOND END IN
Hardness Rating59.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM OVERALL
Pressure Angle20.0000 DEGREES
Hub Style DesignatorPLAIN FIRST END
Pitch Diameter5.0000 INCHES NOMINAL IN
Body StylePLAIN, SOLID
Teeth Quantity30
Face Nominal Width2.000 INCHES IN
Hub Nominal Diameter4.000 INCHES FIRST END IN
Material Document and ClassificationFED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
MaterialSTEEL COMP 4615 OVERALL
Nominal Outside Diameter5.250 INCHES IN
Nominal Distance Between Body Face and Protruding Hub End0.125 INCHES FIRST END IN
Bore StyleW/COUNTERBORE COUNTER BORE SECOND END
Counterbore Nominal Depth0.188 INCHES COUNTER BORE SECOND END IN
Tooth FormSTANDARD
Style DesignatorPROTRUDING HUB
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
2920-00-646-6812EBB13A INTERCHANGEABLE
Drive,engine,electrical Starter
Rbc Transport Dynamics Corp Div Rbc Transport Dynamics
3110-00-828-4735A3323-1 INTERCHANGEABLE
Bearing,ball,track Roller
Lockheed Martin Corporation Div Rms
Cross-Reference Index
Part NumberManufacturer
A3323 Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
Related Parts
2920-00-646-6812INTERCHANGEABLE
DRIVE,ENGINE,ELECTRICAL STARTER
EBB13A
3110-00-828-4735INTERCHANGEABLE
BEARING,BALL,TRACK ROLLER
A3323-1

Frequently Asked Questions

What is NSN 3020-00-294-8380?

NSN 3020-00-294-8380 is a Gear,spur, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-294-8380?

NSN 3020-00-294-8380 has 1 cross-referenced part number: A3323 (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic).

What NSN replaces 3020-00-294-8380?

There are 2 known substitutes for 3020-00-294-8380: 2920-00-646-6812, 3110-00-828-4735. Verify interchangeability with system specifications before substitution.

What are the specifications of A3323?

Key specifications for A3323: Bore Nominal Diameter: 3.149 INCHES COUNTER BORE SECOND END IN; Counterbore Nominal Diameter: 4.000 INCHES COUNTER BORE SECOND END IN; Hardness Rating: 59.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM OVERALL; Pressure Angle: 20.0000 DEGREES. 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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