Lockwood 3573 Nightlatch Mortice Lock โ 60mm Backset
3570 Series Cylinder Mortice Locks are made from quality materials to meet high durability and strength requirements.
Various latching functions operated by a key outside and by a turnknob or key inside. The nightlatch locks automatically when the door is closed. For all nightlatch functions specify the primary lock (3570SC). This lock can then be easily adapted to suit function required.
Features of the 3570 Nightlatch Mortice Locks
Latch
Deadlatch only.
Furniture
Compatible with most Lockwood cylinder escutcheons, turnknobs and plate furniture.
3573-419 Aluminium Door Fixing Tabs
3573 Installation Instructions
Case and Cover Plates
Backset
Latchbolts
Latchbolts are 15mm, stainless steel. Deadlatching is achieved by an auxiliary stainless steel latchbolt. This auxiliary bolt retracts when the main latchbolt is withdrawn when the door is closed.
Deadbolts
Deadbolts are 19mm, stainless steel.
Springs
High grade spring steel material, corrosion protected.
Cylinder Retaining Pin
Hard-drawn spring steel wire, corrosion protected.
Door Thickness
3570 Series locks โ 32mm to 50mm
Locksets to suit thicker doors are available on application.
Door Clearance
To ensure correct functioning of the deadlatching mechanism and security for all locks, the clearance between the door and the frame should be 3mm. However the deadlatching will operate up to 8mm door clearance.
Aluminium Doors
Aluminium door accessory packs and aluminium fix locks are available upon request. Specify SP3570-419 for mounting tabs accessory pack or 3572AFSC.
Security
All 3570 Series Cylinder Mortice Locks conform with Level S2 (Physical Security) Australian Lock Standard (AS-4145.2-1993). Level S3 (Physical Security) is available upon request.
Durability
All 3570 Series Cylinder Mortice Locks conform with level D3 (Durability) Australian Lock Standard (AS 4145.2- 1993).
Fire Rating
Lockwood 3570 Series Mortice Locks have been successfully tested up to 4 hours (depending on type of doorset) on fire door assemblies in accordance with Australian Standard AS 1905.1- 2005, Part 1: Fire Resistant Doorsets.
Cylinder
Five pin tumbler mechanism. Standard Lockwood oval shaped brass cylinders and brass barrels.
Functions require the use of different cams and adaptors.
Keying
Standard Keying
Restricted Special Keying
Lockwood locks can be keyed to a number of controlled and/or specially keyed systems. These range from legally protected keys to protect against unauthorised duplication, which can also include specially designed key systems such as master key systems, which allow for different levels of mechanical access control.
Standard Finishes
Extended Cylinders
Extended cylinders are available for thicker doors.
Rebate
Rebate kits to suit 13mm standard rebate are available.
Electric Strikes
Lockwood 3570 Series Mortice Locks are compatible with most electric strikes. Refer local sales office for further details.