National Marker N180158 Steel Key Stock 0.125x12 in

Product Description

The NATIONAL MARKER N180158 is a steel key stock segment used to secure rotating components such as gears, pulleys, and sprockets to shafts in mechanical and industrial assemblies. Measuring 0.125 inches wide by 12 inches long, this piece is cut from open hearth steel for consistent hardness and dimensional accuracy. Machinists, millwrights, and maintenance technicians use key stock when fitting or replacing keyed shaft connections during equipment installation or repair.

This key stock is suited for general industrial maintenance, mechanical drive systems, and power transmission applications. The 12-inch length allows technicians to cut the piece to the required length on the job, accommodating a range of shaft and hub keyway depths. It is sold individually and is appropriate for both light-duty and moderate-load drive connections in commercial and industrial settings.

Key Features

• Open hearth steel construction for consistent hardness and machinability
• 0.125 inches x 12 inches dimensions allow field trimming to required length
• Standard square key profile fits common shaft keyway dimensions
• Sold individually for single-piece replacement or custom fabrication needs

Compatibility

Designed as a standard-profile replacement key stock for mechanical shaft and hub assemblies requiring a 0.125-inch keyway width.

Installation Notes

Key stock installation is typically performed by machinists or maintenance technicians. De-energize and lock out all equipment before removing or installing any shaft components. Key stock is commonly cut to length using a hacksaw or horizontal band saw and may require light filing to achieve a proper fit within the keyway. Ensure the key fits snugly without excessive play before reassembling the drive component.

Technical Specifications

• Width: 0.125 inches
• Length: 12 inches
• Material: Open Hearth Steel
• Weight: 0.054 pounds
• Sold As: Each

Standard Information

• Brand: NATIONAL MARKER
• Manufacturer Part Number: N180158