Mainspring for American Wall Clock – Loop End (3/4″ x 0.018″ x 170″)

Restore the power and precision of your vintage 31-day American wall clock with this premium-quality loop end mainspring. Measuring 3/4 inch (19 mm) wide, 0.018 inch (0.46 mm) thick, and 170 inches (4320 mm) long, this mainspring is specifically designed for 31-day mechanical wall clocks, providing the extended strength and durability required for longer-running timepieces.

Key Features:

• Perfect for 31-Day American Mechanical Wall Clocks

• Loop End Design for traditional, secure installation

• Dimensions: 3/4″ (19 mm) width x 0.018″ (0.46 mm) thickness x 170″ (4320 mm) length

• Made from high-carbon spring steel for consistent tension and long life

• Ideal for repair, restoration, and maintenance of vintage wall clocks