LockwoodSKU: 3570SC

Lockwood Primary Lock Case & Accessories 3570



Suitable for heavy duty use in industrial and commercial buildings, institutions, clubs, schools, hospitals, hotels, and similar buildings.

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.


Deadlatch only.
Compatible with most Lockwood cylinder escutcheons, turnknobs and plate furniture.
High purity zinc alloy material cases and stainless steel cover plates
Brass plates provided for plated finishes available in square and round end
60mm standard backset
Extended backsets 89 and 127mm are available on application.
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 This auxiliary bolt retracts when the main latchbolt is withdrawn when the door is closed.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 are 19mm, stainless steel.
Springs are high grade spring steel material, corrosion protected.
Cylinder Retaining Pin is hard-drawn spring steel wire with corrosion protection.
Suits door thickness of 32mm to 50mm
Aluminium door accessory packs and aluminium fix locks are available upon request. Specify SP3570-419 for mounting tabs accessory pack or 3572AFSC.
Standard Lockwood oval shaped brass cylinders and brass barrels. Functions require the use of different cams and adaptors.
Can be keyed to suit almost all regular key profiles
Oval cylinder is made to take restricted in line and nearly all higher security restricted cylinders
Available in Chrome Plate CP, Satin Chrome Brushed SC andPolished Brass PB
Extended Cylinders Extended cylinders are available for thicker doors.
Rebate Rebate kits to suit 13mm standard rebate are available.
Lockwood 3570 Series Mortice Locks are compatible with most electric strikes.
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.


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.

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.