Hillman Square Machine Keys, 1/4in x 1-1/4in, 6 Pack, Zinc-Plated

Product Description Hillman square keys are designed to create secure mechanical connections between rotating components such as shafts and hubs. These keys are commonly used in industrial machinery, power transmission systems, motors, pulleys, and gear assemblies where torque must be transferred between components without slippage. A square key is installed into matching keyways cut into both the shaft and the hub. Once inserted, the key locks the components together so that they rotate as a single unit. This prevents relative rotation and ensures reliable transfer of power through the mechanical system. These keys measure 1/4 inch wide by 1-1/4 inches long, making them compatible with equipment designed for standard 1/4-inch keyways. Their precise dimensions allow them to fit securely between shaft and hub components. Constructed from durable steel, these keys provide strong and dependable performance in mechanical assemblies and equipment repairs. The steel construction ensures that the keys can withstand the stresses associated with power transmission systems. Each key features a zinc-plated finish, which provides moderate protection against rust and corrosion. This protective coating helps extend the life of the hardware in general-purpose mechanical applications. Packaged in a convenient refill box containing 6 square keys, these components are ideal for mechanics, equipment technicians, contractors, and DIY users performing machinery maintenance, equipment repairs, and mechanical assembly projects requiring reliable key stock hardware. From the Manufacturer Square keys are small bars of any length but its height and width are the same. It's a piece inserted between a shaft and a hub to prevent relative rotation. Square keys are common in general industrial machinery.

• SQUARE KEYS FOR MECHANICAL AND INDUSTRIAL SHAFT CONNECTIONS: 1/4 in. x 1-1/4 in. machine keys connect rotating shafts and hubs in motors, pulleys, and gears, providing reliable torque transfer in mechanical power transmission systems.
• PREVENTS RELATIVE ROTATION BETWEEN SHAFT AND HUB: Square keys fit into keyways between a shaft and hub, locking both components together to transfer torque while preventing independent rotation or slipping during mechanical operation.
• PRECISION SIZED FOR STANDARD 1/4 IN. KEYWAY COMPATIBILITY: Each key measures 1/4 in. x 1-1/4 in. for reliable fit in machinery components designed for standard 1/4 in. keyways, ensuring effective torque transfer between components.
• DURABLE STEEL CONSTRUCTION FOR DEMANDING MECHANICAL APPLICATIONS: High-quality steel provides strong, dependable performance for machinery repair, industrial assemblies, and equipment requiring reliable shaft-to-hub torque connections.
• TRUSTED HILLMAN FASTENING SOLUTIONS: Hillman hardware products are engineered for consistent quality, dependable performance, and reliable fastening across construction, repair, and home improvement project applications.