National Marker N180166 Steel Key Stock 3/16x12 in

Product Description

The NATIONAL MARKER N180166 is a steel key stock used to secure rotating components such as gears, pulleys, and sprockets to shafts in mechanical assemblies. Measuring 3/16 inch wide by 12 inches long, this key stock is machined from open hearth steel, providing the strength and dimensional consistency required for reliable power transmission applications. It is a standard trade-supply item installed by millwrights, maintenance technicians, and industrial mechanics during equipment assembly or repair.

This key stock is suited for residential and commercial mechanical maintenance applications where shaft and hub alignment must be locked in place. The 3/16 inch by 12 inch sizing covers a common range of shaft diameters found in HVAC blower assemblies, pump drives, and general industrial equipment. Each piece is sold individually and fits standard keyway slots machined to matching tolerances.

Key Features

• Open hearth steel construction for consistent hardness and machinability
• 3/16 inch x 12 inch dimensions fit standard keyway slots
• Straight key profile compatible with square and rectangular keyway cuts
• Sold individually for single-application replacement or repair use
• Lightweight at 0.123 pounds for easy handling and installation

Compatibility

Designed as a standard-profile replacement key stock for mechanical assemblies using 3/16 inch keyway slots in shafts and hubs across general industrial, HVAC, and pump applications.

Installation Notes

Installation is performed by qualified mechanical or maintenance technicians. Always de-energize and lock out the equipment before removing or installing key stock. The key stock may be cut to length using a metal hacksaw or cold saw to fit the specific hub and shaft engagement depth. Refer to applicable ANSI or OEM specifications for keyway fit class and tolerance requirements.

Technical Specifications

• Material: Open Hearth Steel
• Width: 3/16 inches
• Length: 12 inches
• Weight: 0.123 pounds
• Sold As: Each
• UPC: 00038613180161

Standard Information

• Brand: NATIONAL MARKER
• Manufacturer Part Number: N180166