Mak-a-key 8003750375-12 Undersized Key Stock 12 in

Product Description

The MAK-A-KEY 8003750375-12 is a 12-inch length of undersized key stock machined from Type 316 stainless steel. Key stock is used to transmit torque between a shaft and a rotating component such as a gear, pulley, or sprocket by fitting into a keyseat on both the shaft and the hub. Undersized key stock is intentionally manufactured below nominal dimensions to allow for a controlled fit in standard keyways. The Type 316 stainless steel construction provides strong corrosion resistance, making this piece suitable for wet, marine, and chemically aggressive environments. Machinists, millwrights, and maintenance technicians are the typical end users.

This key stock is suited for industrial, marine, and commercial mechanical assemblies where corrosion resistance is required alongside reliable torque transmission. Undersized dimensions allow it to slide into standard keyways without binding, which simplifies assembly and reduces the need for hand-fitting. Typical applications include pump shafts, conveyor drives, fan hubs, and other rotating equipment where standard carbon steel key stock would be vulnerable to rust or chemical attack. At 12 inches in length, the piece can be cut to custom lengths on-site to suit specific shaft and hub configurations.

Key Features

• Type 316 stainless steel construction for superior corrosion resistance in marine and chemical environments
• Undersized cross-section for easy installation into standard nominal keyways without hand-fitting
• 12-inch length allows field cutting to custom dimensions
• Single-piece packaging - sold as one length per unit
• UNSPSC Code 31163208 for straightforward procurement and classification

Compatibility

Designed as a standard undersized key stock replacement for use in rotating shaft assemblies with nominal keyways across industrial, marine, and commercial mechanical equipment.

Installation Notes

Key stock installation is typically performed by machinists or millwrights. De-energize and lock out all power to the equipment before disassembly of any rotating components. Use appropriate cutting tools such as a bandsaw or abrasive cutoff wheel to trim the stock to the required length, then deburr all cut edges before fitting. Verify that the keyway dimensions in both the shaft and hub are clean and free of damage before seating the key stock.