Precision Brand 15350 Key Stock 0.5x0.25x12 in 6 Piece

Product Description

The PRECISION BRAND 15350 is a zinc-finished, low-carbon steel key stock used to secure rotating components such as gears, pulleys, and sprockets to shafts in mechanical power transmission assemblies. Each piece measures 0.5 inches wide, 0.25 inches high, and 12 inches long, giving technicians flexibility to cut to the required length in the field. Material conforms to ASTM A108 with a Rockwell B80-90 hardness rating, providing reliable shear resistance under normal drive loads. Each package contains 6 pieces. Installation is handled by millwrights, maintenance mechanics, and industrial technicians working on rotating equipment.

This key stock is suited for light to medium duty shaft-and-hub connections in industrial, commercial, and maintenance repair operations. The 0.5 x 0.25 inch cross-section fits standard keyways machined to that profile. The zinc finish provides a basic level of corrosion resistance during storage and service in moderately protected environments. The 12-inch length allows the stock to be cut down to match specific hub or keyway lengths using a hacksaw, angle grinder, or cold cut saw on the bench before installation.

Key Features

• Low-carbon steel construction conforming to ASTM A108 material specification
• Rockwell B80-90 hardness for consistent shear strength in power transmission applications
• Zinc finish for basic corrosion protection during storage and service
• 0.5 x 0.25 x 12 inch dimensions allow field cutting to required keyway length
• Package includes 6 pieces to support multiple repair jobs or equipment rebuilds

Compatibility

Designed for use in standard 0.5 inch wide by 0.25 inch deep keyways on shafts and hubs in mechanical power transmission assemblies where square or rectangular key stock is specified.

Installation Notes

Key stock installation is typically performed by millwrights or maintenance mechanics. De-energize and lock out all rotating equipment before servicing shaft-and-hub connections, following OSHA lockout/tagout procedures. Cut key stock to the required length using appropriate metal cutting tools and deburr all edges before fitting into the keyway. Verify keyway dimensions match the stock profile before pressing or driving the key into place to avoid damage to the shaft or hub bore.