Key Features:

• Durable Zinc Construction Built from high-strength zinc alloy for long-lasting performance in commercial and institutional settings.
• Smooth Thumb Turn Operation Offers easy manual locking/unlocking from the inside—ideal for rooms requiring emergency egress or convenience access.
• Aluminum Finish Clean, modern appearance with corrosion-resistant properties. Matches most satin or clear aluminum commercial door hardware.
• Compatible with Mortise and Rim Cylinders Fits standard threaded cylinder applications—commonly used with exit devices, storefront doors, or interior security doors.
• Easy Installation Screws directly into mortise/rim cylinders or SFIC housings that accept thumb turn tailpieces.

Product Description:

The Zinc Cylinder Thumb Turn – Aluminum Finish provides a reliable, easy-to-use locking solution for interior doors, commercial entries, or exit hardware. Commonly paired with mortise cylinders or rim cylinders, this thumb turn accessory allows for manual locking/unlocking without a key from the inside. Whether for panic bars, classroom doors, privacy function locks, or utility rooms, the zinc thumb turn is a simple yet essential component that ensures both convenience and safety. Its aluminum finish blends well with anodized and satin hardware across modern commercial spaces.

Specifications:

• Material: Zinc Alloy Finish: Aluminum (satin / clear anodized look)
•  Compatibility: Mortise cylinders, rim cylinders, SFIC housings Threading: Standard 1-5/32" diameter (typical for commercial lock hardware)
• Function: Manual lock/unlock from interior side
• Use Case: Commercial, institutional, office, healthcare, utility Download or Print Installation Instructions