Precision Brand 04010 Square Key Stock 12 in 6 Piece

Product Description

The PRECISION BRAND 04010 is a square key stock sold in a 6-piece pack, designed to transmit torque between shafts and mating components such as gears, pulleys, and sprockets. Each piece is 12 inches long and measures 4 mm x 4 mm in cross-section, conforming to DIN 6880 material specifications. Manufactured from low-carbon steel with a gold dichromate finish, this key stock resists corrosion while maintaining the ductility needed for standard keyed shaft applications. Machinists, millwrights, and maintenance technicians use this stock to cut custom-length keys on the job or in the shop.

This key stock is suited for general industrial and mechanical maintenance applications where a 4 mm square profile is required. Common uses include fitting keys in motor shafts, conveyor drive components, pump couplings, and similar rotating power-transmission assemblies. The 12-inch length provides flexibility for cutting multiple keys from a single piece. The gold dichromate finish offers a degree of corrosion resistance for storage and moderate service environments. Each pack contains 6 pieces, making it practical for shops that service multiple machines at once.

Key Features

• Square profile at 4 mm x 4 mm cross-section per DIN 6880 specification
• 12-inch length per piece allows on-site cutting to required key length
• Low-carbon steel construction provides ductility suitable for standard keyed connections
• Gold dichromate finish adds corrosion resistance for storage and general service
• Pack of 6 pieces supports multi-machine maintenance tasks

Compatibility

Designed as an OEM-style replacement and general-purpose key stock for rotating power-transmission assemblies requiring a 4 mm square keyway profile per DIN 6880.

Installation Notes

Installation is typically performed by machinists or millwrights using a bandsaw, hacksaw, or cold saw to cut the stock to the required length. De-burr all cut edges before fitting to prevent shaft or hub damage. Ensure the shaft and equipment are fully de-energized and locked out before removing or installing any keys. Verify keyway dimensions with calipers before installation to confirm proper fit and avoid interference.