Value Collection 33963 Undersized Key Stock 5/16x12 in Steel

Product Description

The VALUE COLLECTION 33963 is a plain-finish, cold drawn steel undersized key stock bar used to transmit torque between a shaft and a mating hub or sprocket. Undersized key stock is machined to allow a precise slip fit into standard keyways, making it a common choice for drive assemblies where clean installation and easy removal are required. At 5/16 inches high, 5/16 inches wide, and 12 inches long, this bar can be cut to length on the job to fit a wide range of shaft and hub combinations. Licensed machinists, millwrights, and mechanical technicians are the typical end users for this material.

This key stock is suited for general power-transmission applications across light industrial, agricultural, and mechanical maintenance settings. It is used in gearboxes, pump drives, conveyor shafts, fan hubs, and similar rotating-equipment assemblies wherever a square key profile is specified. The 12-inch length provides enough material to yield multiple finished keys from a single piece, reducing waste on typical shop or field jobs.

Key Features

• Undersized tolerance allows slip-fit installation into standard square keyways without hand filing
• Cold drawn steel construction provides consistent dimensional accuracy and good surface finish along the full length
• Square 5/16 x 5/16 inch profile suits common shaft sizes in the same range
• 12-inch bar length can be cut to multiple finished key lengths on a bandsaw, chop saw, or angle grinder
• Plain finish with no coating — ready for immediate use or light machining

Compatibility

Designed as a standard undersized square key stock for use in any shaft-and-hub assembly requiring a 5/16-inch square keyway profile.

Installation Notes

Installation is typically performed by a machinist or millwright. Always de-energize and lock out the drive equipment before removing or installing any key stock. Cut the key to finished length using appropriate metal-cutting equipment, and deburr all cut edges before assembly. Do not use a key as a shear pin or as a substitute for a properly sized fastener.