Deltana Enterprises 7FBZ5 7 in. Flush Bolt Zinc Antique Brass door lock

Door Hardware for Interior Use

The Deltana Enterprises 7FBZ5 is a flush bolt made from zinc with an antique brass finish. It suits interior doors that need a discreet locking point on the inactive leaf. The 7-inch length provides a standard throw for residential or light commercial applications. Buyers who need a surface-mounted slide bolt or a magnetic catch will not find that function here.

Zinc Construction and Finish Limits

Zinc offers adequate strength for typical interior door traffic but is softer than steel or brass alloys, so the bolt tip can deform under forced entry or heavy impact. The antique brass coating is a decorative layer that will wear at the contact points over time, revealing the base metal underneath. No fire-rating or UL listing is indicated in the data, so the bolt should not be specified for labelled fire-door assemblies.

Simple Mortise Installation

Installation requires mortising the bolt body into the door edge and the strike into the frame or floor, which is straightforward with basic chisels and a drill. The most common issue is misalignment between the bolt and its keeper, causing binding or failure to latch fully. Ensuring the mortise depth matches the body thickness and checking the throw clearance before final fastening avoids most call-backs.