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.

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.

Precision ground to a tight diameter tolerance, these rods are ready for turning in your lathe.

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

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

Easier to machine without cracking than other impact-resistant ductile cast iron bars, these cast iron bars contain a high amount of ferrite. Use them to make cylinder and die blocks, rotary tables, and rail spacers.