Precision Brand 15475 Key Stock 5/8x3/8x12 in Zinc 6pc

Product Description

The PRECISION BRAND 15475 is a zinc-finished, low-carbon steel key stock bar used to secure rotating components — such as gears, pulleys, and sprockets — to shafts in mechanical drive systems. Each bar measures 5/8 inch wide by 3/8 inch thick by 12 inches long and meets ASTM A108 material specification. Hardness is rated at Rockwell B80-90, providing the shear resistance needed for typical power transmission loads. This package includes 6 pieces of identical key stock, making it practical for maintenance shops and field technicians who service multiple machines or keep spares on hand.

Key stock of this profile is used across a wide range of industrial and mechanical applications: HVAC equipment drives, conveyor systems, pump shafts, compressor drives, and general machinery with keyed shaft connections. The 5/8 by 3/8 inch rectangular cross-section fits standard keyway slots cut to matching dimensions. The zinc finish provides light corrosion protection during storage and in low-moisture service environments. Machinists, millwrights, and maintenance technicians typically cut this bar stock to the required key length using a bandsaw or cold saw at the job site.

Key Features

• Low-carbon steel construction meets ASTM A108 specification for consistent mechanical properties
• Rockwell B80-90 hardness suits standard power transmission keyway applications
• Zinc finish provides light corrosion resistance for storage and general service
• 5/8 inch width by 3/8 inch height cross-section fits matching standard keyway slots
• 12-inch bar length allows on-site cutting to required key length
• Sold as a 6-piece package for shop stock and multi-machine service

Compatibility

Designed as a standard rectangular key stock replacement for keyed shaft connections requiring a 5/8 inch by 3/8 inch profile in industrial machinery, HVAC drive assemblies, and general power transmission equipment.

Installation Notes

Key stock installation is typically performed by machinists, millwrights, or qualified maintenance technicians. De-energize and lock out all power to the equipment before removing or installing any shaft keys. Cut bar stock to the required length and deburr all cut edges before fitting into the keyway. Consult applicable machinery OEM documentation and ANSI or ASME standards for proper key fit tolerances and assembly procedures.