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Small metal shaft arbor with threaded end and flanged washers

Dayton

Dayton 3ZN05 Shaft Arbor 3/8-24 RH thread

SKU CH-T5VP-ZX567

Mounts small buffing and finishing wheels on fractional-horsepower motors with a 5/16 in shaft

  • Fits 5/16 in shafts for secure motor mounting
  • 3/8-24 RH thread matches common fractional horsepower motors
  • 1 1/8 in thread length allows firm wheel engagement
  • Includes flanged washers and hex nut for complete assembly
  • Socket setscrew type locks wheels without marring shafts

Shaft Arbor for Small Motors

This Dayton 3ZN05 shaft arbor mounts buffing and finishing wheels on smaller fractional horsepower motors. It fits a 5/16 in shaft diameter and uses a 3/8-24 RH thread with a 1 1/8 in thread length. The assembly includes flanged washers, a hex nut, and a socket setscrew for secure wheel retention. Maximum wheel width is 1/2 in with a 1 1/4 in washer outside diameter.

Replaces Worn or Missing Arbors

This unit replaces a damaged or lost arbor on existing motor shafts to restore wheel mounting capability. The upgrade is worth it when the original hardware no longer clamps wheels true or when the thread form has stripped. It suits counter clockwise shaft rotation and installs with basic hand tools in minutes.

Holds Alignment Under Continuous Use

The socket setscrew locks against the motor shaft to resist loosening during sustained vibration from buffing operations. Flanged washers distribute clamping force across the wheel face to maintain concentric running. The 2 in overall length keeps the wheel close to the motor bearing, reducing cantilever stress during extended finishing passes.

How it compares

Measured against everything we stock in Utility & Specialty Hand Tools, at today’s prices. Recalculated every night.

Price $7.99
Cheaper than about 87% of the 2,474 comparable items (median $23.99).

Specifications

Product
Brand nameDayton

Questions about this item

Will the 5/16 in shaft diameter fit my motor?

The arbor fits a 5/16 in shaft diameter and is intended for smaller fractional horsepower motors.

How do I tighten the setscrew without damaging the shaft?

Use the socket-type setscrew to lock the arbor onto the motor shaft; over-tightening can strip the threads.

When should I replace the flanged washers and hex nut?

Replace the included flanged washers and hex nut if they show wear, corrosion or no longer clamp the wheel securely.

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