Mak-a-key C2075537537512 Oversized Key Stock 5 Pack

Product Description

The MAK-A-KEY C2075537537512 is an oversized key stock bar used to transmit torque between a shaft and a mating hub, sprocket, gear, or pulley. Machined from 1090/1095 high-carbon steel, each bar measures 3/8 inches high by 3/8 inches wide by 12 inches long. The oversized classification means the bar is cut to slightly larger tolerances than standard key stock, making it well suited for worn keyways or applications requiring a tighter, more interference-resistant fit. Each package contains 5 pieces. This type of key stock is a staple in maintenance, mechanical, and power transmission service work.

Oversized key stock is used in industrial, commercial, and light mechanical applications where a shaft-to-hub connection must be secured or restored. Common install scenarios include drive shafts, pump couplings, conveyor sprockets, fan hubs, and motor shafts. Technicians and millwrights cut the bar to the required length on the job using a band saw or cold saw, then dress the cut ends as needed before fitting. The 12-inch bar length provides enough stock to yield multiple cut keys depending on the required key length for the application.

Key Features

• Oversized tolerance profile fits worn or slightly enlarged keyways for a secure interference fit
• 1090/1095 high-carbon steel construction provides strength and wear resistance for torque transmission applications
• 3/8 x 3/8 x 12-inch bar stock offers enough length for multiple cut keys per piece
• Pack of 5 bars supports shop inventory or multi-key jobs
• UNSPSC Code 31163208 for procurement and catalog classification

Compatibility

Designed as an oversized key stock replacement or supply bar for shaft-and-hub assemblies requiring a 3/8 x 3/8-inch key profile across industrial and mechanical power transmission applications.

Installation Notes

Installation is typically performed by a licensed millwright or qualified mechanical technician. Isolate and lock out the drive equipment before removing any existing key or coupling hardware. Cut the bar to required length using appropriate metal-cutting equipment, then deburr and dress all cut surfaces before fitting into the keyway. Verify that both the shaft keyway and the hub keyway dimensions are within acceptable tolerances before installing the new key to ensure proper fit and torque transfer.