Precision Brand 56511 Mill Key Stock 1x1x12 in Low Carbon Steel

Product Description

The PRECISION BRAND 56511 is a mill key stock bar used to secure rotating components such as gears, pulleys, and sprockets to shafts in mechanical drive assemblies. Measuring 1 inch wide by 1 inch high by 12 inches long, this piece is cut from low carbon steel and delivered with a plain mill finish, making it ready to cut or file to the required fit length. It is a standard stock piece used in maintenance shops, fabrication facilities, and industrial equipment repair applications where a square-profile key is required.

This key stock is suited for applications in mechanical power transmission systems found in industrial, commercial, and light manufacturing environments. Machinists, millwrights, and maintenance technicians install this type of key stock when fitting new shafts or replacing worn keyway hardware. The 12-inch length provides flexibility for single-use installations or for cutting multiple shorter keys depending on job requirements.

Key Features

• Square cross-section profile: 1 inch wide by 1 inch high for consistent fitment in standard keyways
• 12-inch bar length allows on-site cutting to required key lengths
• Low carbon steel construction provides adequate shear strength for general power transmission loads
• Plain mill finish ships as-produced, ready for machining or hand-fitting
• Sold as a single piece per package for precise quantity purchasing

Compatibility

Designed as a standard mill key stock replacement for mechanical drive assemblies requiring a 1-inch square key profile in shaft keyway applications.

Installation Notes

Installation is typically performed by a machinist or millwright. Deenergize and lock out the machine before removing or installing any shaft hardware. The key stock should be cut and deburred to the required length before fitting to the keyway; ensure the fit is snug without binding. Follow applicable machinery safety codes and the equipment manufacturer guidelines for keyway tolerances during installation.