Precision Brand 04015 Square Key Stock 12 in 6 Piece

Product Description

The PRECISION BRAND 04015 is a square key stock used to secure rotating components such as gears, pulleys, and sprockets to shafts in mechanical drive systems. Each piece measures 12 inches in length with a 5.0 mm square cross-section, conforming to DIN 6880 material specification. Manufactured from low-carbon steel with a gold dichromate finish, this key stock resists corrosion while maintaining the ductility needed for proper seating in standard keyways. This package contains 6 pieces, making it a practical stocking item for maintenance shops and field technicians who cut key stock to length on the job.

Square key stock is used across a wide range of industrial, HVAC, and mechanical applications wherever shaft-to-hub power transmission requires a removable, positive drive connection. Typical install scenarios include fan drives, pump shafts, compressor couplings, and conveyor systems. The 5.0 mm square profile fits standard metric keyways and is well-suited for both light and moderate duty drive applications in residential and commercial mechanical systems. Technicians typically cut the stock to the required key length using a bandsaw, hacksaw, or cold chisel before fitting.

Key Features

• Square profile at 5.0 mm x 5.0 mm cross-section for consistent keyway fit
• 12-inch length allows cutting to multiple finished key lengths per piece
• Low-carbon steel construction per DIN 6880 material specification
• Gold dichromate finish provides corrosion resistance for extended shelf and service life
• Pack of 6 pieces supports stocking for repetitive maintenance tasks

Compatibility

Designed as an OEM-style replacement and general-use key stock for any standard metric keyway application requiring a 5.0 mm square key profile conforming to DIN 6880.

Installation Notes

Installation is typically performed by a millwright, HVAC mechanic, or industrial maintenance technician. Always de-energize and lock out the equipment before removing or installing key stock. Cut key stock to the required finished length, deburr all cut edges, and confirm the key seats fully in both the shaft keyway and hub keyway before reassembling the drive. Do not use key stock as a load-bearing shear element beyond its intended power transmission role.