ACC 51mm Cylinder Door Lock, Antique Copper Finish, 3 Keys

ACC 51mm Cylinder Lock

The ACC Cylinder Door Lock provides a reliable security solution for internal and external timber or metal doors requiring a profile cylinder mechanism. This 51mm hardware component features a durable construction designed to withstand high-frequency use in residential and light commercial environments. The antique copper plating ensures corrosion resistance while maintaining a professional appearance across various architectural styles.

Built for the Job

This hardware is engineered for rapid installation and long-term durability on active job sites. Contractors and locksmiths typically specify this size for standard door thicknesses where a flush finish is required with the escutcheon plate. The pin tumbler mechanism provides consistent operation and resistance against common picking techniques found in standard residential settings.

• Retrofitting existing mortice locks during facility maintenance or security handovers.

• Installation in new internal office doors using standard Euro-profile cutouts.

• Replacement of damaged or compromised lock cores in multi-unit residential blocks.

Product Highlights

Durable Base Material

The core is machined from high-tensile alloy to prevent snapping and mechanical fatigue during high-torque operation.

Corrosion Resistance

• Antique copper finish protects the internal mechanism from oxidation.
• Plated surface resists wear from repetitive key insertion and extraction.

Technical Specifications

What’s Included

• 1 x 51mm Cylinder Lock Body

• 3 x Steel Keys

• 1 x M5 Fixing Bolt

On-Site & Workshop Notes

• Ensure the cam is properly aligned with the mortice lock drive before tightening the retaining screw.

• Use a graphite-based lubricant for maintenance; avoid using heavy oils which can attract dust and seize the pins.

• Verify that the 51mm length provides sufficient clearance for your specific door thickness and handle backplates.

• The fixing bolt should be tightened firmly but avoid over-torquing to prevent stripping the internal threads of the lock body.