Precision Brand 15525 Key Stock 5/8x1/2x12 in Zinc 6pc

Product Description

The PRECISION BRAND 15525 is a zinc-finished, low-carbon steel key stock used to secure rotating components such as gears, pulleys, and sprockets to shafts in mechanical drive systems. Each piece measures 0.625 inches wide, 0.5 inches high (thick), and 12 inches long, conforming to ASTM A108 material specification. Hardness is rated at Rockwell B80-90, providing reliable shear resistance under typical drive loads. This package contains 6 pieces of identical key stock. Machinists, millwrights, and maintenance technicians install this type of key stock when assembling or repairing power transmission equipment.

This key stock is suited for residential and light industrial mechanical applications wherever keyed shaft connections are required. It is commonly used in HVAC fan assemblies, pump drives, conveyor systems, and general power transmission setups. The zinc finish provides a measure of corrosion resistance during storage and service. Because the stock is 12 inches long, it can be cut to the required length on-site to fit a range of shaft and hub keyway dimensions. The 0.625-inch by 0.5-inch cross-section fits standard keyway cuts for corresponding shaft sizes per common engineering tables.

Key Features

• Low-carbon steel construction per ASTM A108 for consistent machinability and shear performance
• Rockwell B80-90 hardness rating for reliable torque transmission in drive applications
• Zinc finish for added corrosion resistance during storage and service life
• 12-inch length allows on-site cutting to fit a range of hub and shaft keyway lengths
• Package includes 6 pieces for stocking or multi-repair jobs
• 0.625 x 0.5-inch cross-section matches standard keyway dimensions for common shaft sizes

Compatibility

Designed as a standard-dimension replacement key stock for keyed shaft and hub assemblies requiring a 0.625-inch wide by 0.5-inch thick cross-section in power transmission equipment.

Installation Notes

Key stock installation is typically performed by machinists, millwrights, or qualified maintenance technicians. Always de-energize and lock out the drive system before removing or installing any shaft components. Cut the key stock to the required length using appropriate metalworking tools and ensure all burrs are removed before fitting to prevent keyway damage. Verify that the key stock seats fully in both the shaft and hub keyways before reassembling and returning the drive to service.