21 Teeth Sprockets | McMaster-Carr

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Stainless Steel

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327 Products

Drive Sprockets

Sprockets

Sprocket teeth mesh with your roller chain to smoothly transmit power

Flat Sprockets

No raised hub—best for tight spots and lightweight designs to transmit power

Taper-Lock Bushing-Bore Sprockets

Taper-Lock Bushing-Bore Sprockets

Quickly swap or service parts in tight spaces with no press-fitting or special tools

Sprockets for Clog-Resistant Flat-Edge Roller Chain

Sprockets for Clog-Resistant Flat-Edge Roller Chain

Prevent jams when paired with our clog-resistant chain

Quick-Disconnect (QD) Bushing-Bore Sprockets

Quick-Disconnect (QD) Bushing-Bore Sprockets

Quickly swap or service parts with no press-fitting or special tools

Sprockets for Inverted-Tooth Chain

Sprockets for Inverted-Tooth Chain

Mesh perfectly with inverted-tooth chain to transfer more power than roller chain

Other Products

Conveyor Belt Drive Sprockets

Conveyor Belt Drive Sprockets

Transmit power to chain belting to keep it running smoothly

Idler Sprockets

Idler Sprockets

Press against your chain to take up slack and reduce wear and vibration

Timing Belt Drive Pulleys

Timing Belt Drive Pulleys

Pair with a timing belt to keep your drive system in sync

Spur Gears

The simplest type of gear for transferring motion, with straight, parallel teeth

Miter Gears

Connect shafts at a right angle without changing speed or torque

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)