Mak-a-key 8003120312-12 Undersized Key Stock 12 in

Product Description

The MAK-A-KEY 8003120312-12 is an undersized key stock bar cut to 12 inches in length and machined from Type 316 stainless steel. Key stock is a precision-cut bar material used to create keyway drives between rotating shafts and mating components such as pulleys, gears, and couplings. The undersized designation means the cross-section is ground slightly below nominal dimension to allow controlled slip-fit insertion into standard keyways without requiring hand-fitting or filing. Type 316 stainless steel provides corrosion resistance suited to wet, marine, and chemical environments. Machinists, millwrights, and maintenance technicians keep key stock on hand as raw material to cut drive keys to length in the field or shop.

This key stock is appropriate for light to medium industrial drive applications where corrosion resistance is a priority. Common install scenarios include pump shafts, fan assemblies, conveyor drives, and marine propulsion components operating in humid or washdown environments. The single 12-inch bar is sold individually, making it practical for one-off replacement jobs and small-batch fabrication work requiring only a short length of stainless key material.

Key Features

• Undersized cross-section allows direct insertion into standard keyways without hand fitting
• Type 316 stainless steel construction resists corrosion in wet, marine, and chemical service conditions
• 12-inch length provides material for multiple cut-to-length drive keys from a single bar
• Single-piece packaging suits low-quantity replacement and repair applications

Compatibility

Designed as a raw key stock bar for fabrication or replacement of drive keys in standard keyway shaft applications where an undersized stainless steel key is specified.

Installation Notes

Key stock is typically cut to length using a bandsaw, cold saw, or abrasive cutoff wheel before installation. Deburr all cut ends before inserting the key into the keyway. Always de-energize and lock out the drive system before removing or installing shaft keys. Verify keyway dimensions and fit class against the equipment manufacturer's specification before final assembly.