National Manufacturing Co. Gallery Series 3 In. Polished Brass Door Surface Bolt 197970

Polished Brass Surface Bolt

The National Manufacturing Co. Gallery Series surface bolt is a 3-inch solid brass fastener designed for casement windows and French, twin, or Dutch doors. It installs on the door face and uses a tension spring to hold the throw in position. The bright brass finish resists marring wood surfaces while providing traditional hardware styling. Includes concealed base, universal strike, and mortise strike for flexible mounting.

3 Inch Throw and Spring Retention

The three-inch throw provides extended engagement across door stiles or window frames for secure closure. A built-in tension spring keeps the bolt seated in either the projected or retracted position without rattling. Solid brass construction withstands repeated operation and resists corrosion in interior environments. The concealed base covers mounting screws for a clean appearance on finished woodwork.

Solid Brass Material and Finish

Every component is machined from solid brass with a polished bright brass finish rather than plated steel or zinc alloy. This ensures consistent colour through the full thickness and eliminates the risk of plating wear exposing a base metal. The material choice also prevents galvanic reaction with common wood treatments. Buyers needing stainless steel, oil-rubbed bronze, or magnetic catches should select a different product.