Iron Shafts | McMaster-Carr

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399 Products

About Shaft Couplings

Base-Mounted Shaft Supports

Slide the shaft in to install, then tighten to secure. For use with light to medium loads where shaft alignment is not critical, these shaft supports brace the end of a linear shaft along the ground or other flat surface.

Precision Acme Lead Screws and Nuts

Also known as single-start and self-locking lead screws and nuts, these have a single thread that runs the length of the screw. The nut travels only when the screw turns, so your system won't unexpectedly move when the lead screw is at rest.

Fast-Travel Precision Acme Lead Screws and Nuts

Multiple thread channels (also known as thread starts) create faster linear travel than lead screws with a single thread start.

Acme Lead Screws and Nuts

Found in hand-powered clamps, vises, grates, doors, and work tables, lead screws and nuts have broad, square threads that are well suited for quick assembly, high clamping forces, and lifting and lowering heavy objects.

Two-Piece Shaft Coupling Bridges

When your shafts are not close enough to use standard couplings, these have the length to bridge the gap.

Machinable-Bore Flexible Shaft Couplings

Customize the bore of these flexible couplings to align uncommon shaft sizes as well as shafts that have become undersized from wear or oversized from coatings.

Set Screw Flexible Shaft Couplings

Each hub includes a set screw (unless noted), which bites into your shaft to hold the coupling in place.

Vibration-Damping Flexible Shaft Couplings

A flexible tire on these couplings safeguards components on your shafts by reducing vibration and shock.

High-Speed Vibration-Damping
Flexible Shaft Couplings

Use these gear-shaped couplings for high-speed and high-torque applications.

Splined Flexible Shaft Couplings

For use with splined shafts, which are commonly found in gearboxes and pumps, these couplings are capable of transmitting more torque than couplings for round and keyed shafts.

Splined-to-Keyed Flexible Shaft Couplings

Connect splined shafts to keyed shafts. These couplings are commonly used to connect hydraulic pumps, compressors, and other heavy duty equipment, which often have splined shafts, to electric motors and other components that often have keyed shafts.

Cast Iron

Oversized Easy-to-Machine
Gray Cast Iron Rods and Discs

An oversized diameter allows for finishing to your exact requirements.

Easy-to-Machine Gray Cast Iron Round Tubes

Gray cast iron machines faster with less wear on cutting tools than most types of steel. It's often fabricated into gears, pulleys, rollers, and bushings.

Impact-Resistant Ductile Cast Iron Rods and Discs

Ductile cast iron is strong, resilient, and able to handle repeated stress without breaking.

High-Strength Impact-Resistant
Ductile Cast Iron Rods

Containing more pearlite and less ferrite, these cast iron rods are stronger and harder than standard ductile cast iron.

Easy-to-Machine Impact-Resistant
Ductile Cast Iron Rods

With a high amount of ferrite, these cast iron rods are easier to machine without cracking than other impact-resistant ductile cast iron rods. Use them to create bushings, gears, pulleys, and pistons.

Quick-Clamping Coil-Threaded Rods, Screws, and Nuts

Quick-Clamping Coil-Threaded
Rods, Screws, and Nuts

Combine fast-threading components to build a clamping assembly.