Precision Brand 15200 Key Stock Zinc 1/4 X 3/16 X 12 in 6-pack

Product Description

The PRECISION BRAND 15200 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 assemblies. Each piece measures 0.25 inches wide, 0.1875 inches tall, and 12 inches long, conforming to ASTM A108 material specification. Hardness runs Rockwell B80-90, giving the stock enough strength to resist shear forces in standard drive applications while remaining machinable for field trimming. The zinc finish provides basic corrosion resistance. This pack contains six pieces, making it a practical bench stock item for maintenance shops, millwrights, and industrial service technicians.

Key stock of this profile fits standard 0.25-inch keyway applications across a wide range of machinery including conveyors, pumps, compressors, and fan assemblies. It is used in both light industrial and commercial mechanical installations wherever a keyed shaft-to-hub connection is required. Technicians typically cut pieces to length on-site using a hacksaw or cold chisel and fit them dry or with a light press. The 12-inch bar length accommodates most common cut-to-length needs from a single piece.

Key Features

• Low-carbon steel construction per ASTM A108 for reliable machinability and shear strength
• Rockwell B80-90 hardness suits standard mechanical drive keyway applications
• Zinc finish provides basic corrosion protection during storage and service
• 0.25 inch wide by 0.1875 inch tall profile fits standard 1/4-inch keyway slots
• 12-inch length allows cut-to-size flexibility in the field
• Six-piece pack supports bench stock and repeat-use maintenance scenarios

Compatibility

Designed as a standard-profile replacement key stock for mechanical drive systems requiring a 0.25-inch wide by 0.1875-inch tall keyway connection on keyed shafts and hubs.

Installation Notes

Installation is performed by millwrights, maintenance mechanics, and industrial technicians. De-energize and lock out the drive system fully before removing or installing key stock. Trim the key to length with a hacksaw or cold chisel and deburr all cut edges before fitting. Ensure the key seats fully in the shaft keyway without rocking before pressing the hub into position.