Precision Brand 04005 Square Key Stock 12 Inch 6 Pack

Product Description

The PRECISION BRAND 04005 is a square key stock bar used to create positive drive connections between shafts and rotating components such as gears, pulleys, and sprockets. Each piece measures 12 inches in length with a 3.0 mm square cross-section profile. Manufactured from low-carbon steel to DIN 6880 material specification, this key stock offers reliable shear strength and machinability for standard keyway applications. The plain finish is ready for installation without additional prep. Each package contains 6 pieces, making it practical for shops and technicians who need multiple keys cut to final length on the job.

Square key stock in this size range is commonly used in light-duty to medium-duty power transmission applications across HVAC equipment, pumps, fans, and general industrial machinery. Millwrights, machinists, and mechanical technicians cut pieces to the required length using a hacksaw, bandsaw, or mill to fit keyways machined into shafts and hubs. The 3.0 mm by 3.0 mm cross-section suits smaller-diameter shaft applications where precise fit and minimal backlash are required.

Key Features

• Square profile key stock with 3.0 mm by 3.0 mm cross-section for standard keyway fitment
• 12-inch length per piece allows field cutting to exact required dimensions
• Low-carbon steel construction per DIN 6880 material specification
• Plain finish for straightforward installation without surface treatment concerns
• Sold in a 6-piece package to support multiple cuts or multiple jobs

Compatibility

Designed as an OEM-style replacement and standard stock key for power transmission shafts and hubs requiring a 3.0 mm square keyway profile per DIN 6880.

Installation Notes

Installation is typically performed by a machinist or mechanical technician. Shut down and lock out all rotating equipment before removing or installing key stock. Cut the key stock to the required length and deburr all edges before fitting into the keyway. Ensure the key fits snugly in both the shaft keyway and the hub bore without binding or excessive play.