Precision Brand 04020 Square Key Stock 12 in 6 Piece

Product Description

The PRECISION BRAND 04020 is a square key stock used to secure rotating components such as gears, pulleys, and sprockets to shafts in mechanical drive systems. Each piece is cut from low-carbon steel and finished with a gold dichromate coating that provides baseline corrosion resistance for shop and field use. The stock measures 6.00 mm in width and 6.00 mm in height, conforming to DIN 6880 dimensional standards. This package includes 6 pieces, each 12 inches in length, giving maintenance techs and machinists flexibility to cut keys to the required length on the job.

Square key stock in this size range is used across a wide range of industrial and mechanical applications including pump shafts, conveyor drives, fan assemblies, and motor-to-gearbox connections. It is a standard consumable stocked by millwrights, maintenance mechanics, and equipment repair shops. The 12-inch length allows multiple keys to be cut from a single piece, reducing waste in high-volume repair environments. The gold dichromate finish makes individual pieces easy to identify in a mixed fastener drawer or parts bin.

Key Features

• Square profile with 6.00 mm width and 6.00 mm height per DIN 6880 standard
• Low-carbon steel construction provides machinability and adequate shear strength for standard drive applications
• Gold dichromate finish offers corrosion resistance and visual identification
• 12-inch length per piece allows field-cutting to exact key length
• Sold in a 6-piece package, with a minimum order quantity of 1 package

Compatibility

Designed as a standard DIN 6880 square key stock for use in any keyway application requiring a 6 mm x 6 mm square key profile across industrial machinery, pump assemblies, and rotating drive components.

Installation Notes

Key stock installation is typically performed by millwrights or maintenance mechanics. Before installing or removing key stock, de-energize and lock out the drive system per OSHA lockout/tagout procedures. Key pieces should be cut to length with a metal saw or cold chisel and deburred before fitting into the keyway. Verify keyway dimensions and shaft tolerances before installation to ensure proper fit without excessive play.