Value Collection KP1909 Undersized Key Stock 18-8 Ss

Product Description

The VALUE COLLECTION KP1909 is an undersized key stock bar used to secure rotating components — such as gears, pulleys, and sprockets — to shafts in mechanical power transmission assemblies. Manufactured from 18-8 stainless steel, this key stock offers good corrosion resistance and adequate strength for light- to medium-duty applications. It measures 1/8 inch high by 1/8 inch wide by 12 inches long, allowing it to be cut to length in the field to suit a wide range of keyway depths and shaft diameters. Machinists, millwrights, and maintenance technicians commonly work with this type of bar stock during equipment repair or new assembly builds.

Undersized key stock is dimensioned slightly below nominal to allow controlled fit within a keyway, which is a standard practice when closer tolerances are needed between the key and the keyway slot. This piece is suited to residential and light industrial machinery, conveyor systems, pump shafts, and general mechanical assemblies where a 1/8-inch key profile is specified. The 12-inch length provides enough material for multiple cuts from a single piece, reducing waste during fabrication or repair work.

Key Features

• Undersized profile provides controlled fit within standard keyway slots
• 18-8 stainless steel construction provides corrosion resistance for wet or humid environments
• 12-inch length allows field cutting to custom lengths
• 1/8 inch by 1/8 inch cross section suits light- to medium-duty shaft applications
• Single-piece packaging for individual repair or low-volume fabrication needs

Compatibility

Designed as a standard undersized key stock replacement or fabrication blank for mechanical assemblies requiring a 1/8-inch square key profile in the keyway.

Installation Notes

Installation is typically performed by a machinist or millwright using standard hand tools and a metal cut-off saw or hacksaw to trim the stock to the required length. De-energize and lock out all equipment before removing or installing key stock in any shaft assembly, following applicable OSHA lockout/tagout procedures. Verify keyway dimensions before installation to confirm the undersized profile provides the intended fit. Do not force or hammer key stock into a keyway that does not match the correct profile dimensions.