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The VALUE COLLECTION 40161 is an oversized steel key stock sold in a single-piece package. Key stock is a precision-cut bar used to secure rotating components such as gears, pulleys, and sprockets to shafts, preventing relative rotation under load. This piece is made from steel with a natural, unfinished surface, making it suitable for standard mechanical drive applications. Machinists and maintenance technicians typically cut, file, or mill the stock to the exact length needed for a given keyway. The 4.00 mm height and 4.00 mm width cross-section places this in the square key category.
This key stock is used in general industrial, mechanical, and maintenance repair applications wherever a keyed shaft-and-hub connection is required. It is appropriate for light to moderate drive assemblies in equipment such as conveyors, fans, pumps, and other rotating machinery. The unfinished surface allows for additional machining or fitting to meet specific tolerances on the job. Maintenance technicians, machinists, and millwrights commonly work with this type of stock when replacing worn keys or fabricating new drive connections.
Designed as a general-purpose replacement or fabrication key stock for shaft-and-hub drive assemblies requiring a 4.00 mm square key profile.
Installation is typically performed by a machinist or qualified maintenance technician. Shut down and lock out the equipment fully before removing any shaft components. The key stock should be cut to length and deburred before fitting into the keyway. Verify that both the shaft keyway and hub keyway dimensions match the key cross-section to ensure a proper fit and prevent fretting or premature failure.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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