Briton 5250-57 Euro / Oval Nightlatch Case

The Briton 5250-57 is a versatile, dual-profile mortice nightlatch case designed to provide reliable security and smooth operation for both commercial and domestic doors. This high-quality lock case is uniquely compatible with both Euro profile and oval cylinders, featuring a robust steel case with an included conversion plate to easily switch between cylinder types.

Engineered for flexibility, the lock features a fully reversible latchbolt to suit both left and right-handed doors. It also includes an anti-thrust bolt to prevent external manipulation of the latch when the door is closed, making it an excellent choice for doors integrated with access control systems. For added convenience, a hold-back function can be engaged using a knurled wheel on the forend, allowing the latch to be held retracted when free passage is required.

This nightlatch case is available in a choice of finishes, including Polished Brass and Stainless Steel, to match your existing door hardware. Please select your preferred finish from the options below.

Technical Specifications

• Brand: Briton
• Manufacturer Reference: 5250-57
• Backset: 57mm
• Case Depth: 76mm
• Case Height: 108mm
• Centres: 48mm
• Forend Dimensions: 165mm (Length) x 25mm (Width)
• Forend Shape: Square
• Mechanism: Euro / Oval Cylinder (dual profile)
• Case Finish: Black
• Available Finishes: Polished Brass, Stainless Steel (please choose from the options below)
• Weight: 750g

Key Features

• Dual Profile Compatibility: Suits both Euro and oval profile cylinders with an included conversion plate.
• Reversible Latchbolt: Quick and easy to reverse, making it suitable for left or right-handed doors.
• Anti-Thrust Protection: Prevents unauthorized manipulation of the latchbolt when the door is closed.
• Hold-Back Function: Features a knurled wheel on the forend to hold the latchbolt retracted for free passage.
• Access Control Friendly: Ideal for integration with access control systems and electronic strikes.
• 10-Year Guarantee: Backed by a manufacturer's 10-year mechanical guarantee for peace of mind.