NBNP 62mm Double Cylinder Door Lock, Silver Finish, 3 Keys

NBNP 62mm Cylinder Lock

The NBNP 62mm Cylinder Lock serves as a core security component for standard Euro-profile mortice assemblies. This specific hardware piece utilizes a double-entry keyed system to manage access from both sides of a door leaf. It features a durable silver finish that resists surface tarnishing and matches common architectural ironmongery. The unit provides a standard level of protection for internal doors and secondary external entry points.

Built for the Job

Site supervisors often specify this 62mm barrel for internal fit-outs in commercial buildings or residential apartment blocks. The symmetrical 31mm/31mm split makes it compatible with centered lock cases in 40mm or 44mm thick timber doors. Installers appreciate the straightforward replacement process which requires only a single retaining screw. This hardware fits into existing mortice slots without the need for additional chiseling or wood modification. It provides a cost-effective solution for re-keying projects where the existing lock body remains functional but access control needs updating.

• Retrofitting existing office doors during tenancy changes.

• Installation in new-build residential timber door sets.

• Securing utility rooms and internal storage areas.

Product Highlights

Mechanical Durability

The internal mechanism uses hardened components to ensure long-term cycle performance in high-traffic areas.

Finish and Resistance

• Satin silver plating over a corrosion-resistant base alloy.
• High resistance to atmospheric moisture and handling wear.

Technical Specifications

What’s Included

• 1 x 62mm Double Cylinder Barrel

• 3 x Steel User Keys

• 1 x M5 Fixing Bolt (Long Series)

On-Site & Workshop Notes

• Ensure the barrel does not protrude more than 3mm from the escutcheon to prevent forced removal by gripping tools.

• When installing, align the cam with the lock body before tightening the fixing bolt to avoid cross-threading.

• Regular maintenance with dry graphite powder keeps the pins moving freely under heavy use without attracting dust.

• Verify the door thickness and offset before purchase, as this 31/31 split is designed for centered lock cases.