Precision Brand 04025 Square Key Stock 12 in 6 Piece

Product Description

The PRECISION BRAND 04025 is a square key stock used to transmit torque between a shaft and a mating hub, gear, pulley, or sprocket. Made from low-carbon steel with a gold dichromate finish, each piece measures 12 inches in length and 7 millimeters square in cross-section, conforming to DIN 6880 material specification. This pack contains 6 pieces, giving technicians and machinists enough stock to handle multiple keyway applications in a single job. The gold dichromate finish provides a baseline level of corrosion resistance suitable for general industrial use. Cutting, filing, and fitting to final length is standard practice on the shop floor or in the field.

Square key stock in this size range sees regular use in light to medium-duty drive assemblies found in HVAC equipment, pumps, fans, conveyor systems, and general industrial machinery. Machinists, millwrights, and mechanical contractors cut and fit key stock during shaft assembly, equipment rebuild, or replacement of worn keys in existing keyways. The 7 millimeter square profile is a common metric size that bridges metric and inch-based drive component applications.

Key Features

• Square cross-section at 7 millimeters per side for consistent keyway fit
• 12-inch length allows multiple cuts per piece to minimize waste
• Low-carbon steel construction per DIN 6880 material specification
• Gold dichromate finish for baseline corrosion resistance
• Pack of 6 pieces supports multi-key or multi-shaft jobs
• UNSPSC Code 31163208 for procurement and catalog classification

Compatibility

Designed as a general-purpose OEM-style replacement key stock for shafts and hubs with 7 millimeter square keyways in industrial drive, pump, fan, and mechanical power transmission assemblies.

Installation Notes

Installation is typically performed by machinists, millwrights, or mechanical contractors. De-energize and lock out all equipment before disassembling any shaft or hub assembly. Key stock is cut to length using a hacksaw, bandsaw, or angle grinder, then deburred before fitting. Do not force an oversized key into a keyway, as this can damage the shaft, hub bore, or both.