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BS4 Maximum Security Nightlatch - Emergency Escape

BS4 Maximum Security Nightlatch - Emergency Escape

by Yale

£74.99
Prices updated 19 Mar 2026

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Product Description

BS4 Maximum Security Nightlatch - Emergency EscapeMaximum securityThe Yale British Standard Nightlatches offer maximum security, resisting: drill, pick, card and bump attack techniques. Its 20mm projection latch features an anti-saw bolt, increasing it’s strength and protecting doors from saw attack methods.Insurance approvedInsurance and Secured by Design approved, the Yale BS4 Nightlatch is kitemarked to the insurance required BS3621:2007 and complies with BS EN 12209 & BS EN 1303:2005. BSI ensures to create standards that make product excellence a must.FeaturesInsurance approved - meets security standards required by insurance companiesSecured by Design approved - the Secured by Design scheme is working to reduce crime through sustainable design of products. (a recommended product by police)BSI Kitemarked - the Yale BS1 Max Security nightlatch lock is kitemarked to BS3621:2007 KM21358Push button to hold back the latchYale Quality Keys IncludedUpgrade your home security rating easilyEuro Profile cylinder locks are a convenient way to change your keys without having to replace the entire lock. Fit them in minutes without special tools or equipment. It is the quickest and easiest way to upgrade the security rating of a property.Yale cylinder maintenanceMaintenance and care of your Yale cylinder: Yale recommend regular lubrication of your Yale cylinder locks to ensure continuous trouble free performance and operation.Recommended lubricantWe recommend using a PTFE based lubricant.Apply lubricant to the keyA small amount of lubricant should be applied to the key and then inserted into the cylinder.  Rotate the keyRotate the key  a couple of times in line with the normal locking function.Remove the key from the cylinderRemove the key from the cylinder and wipe away and remaining lubricant  to ensure it isn’t transferred onto other objects.How to measure your cylinderEuro Profile cylinder locks are a convenient way to change your keys without having to replace the entire lock. Fit them in minutes without special tools or equipment. It is the quickest and easiest way to upgrade the security rating of a property.Step 1Open your door and measure from the centre M5 screw on the side of the door, to the edge of your existing cylinder on the inside of your door. This is the 'B' measurement. For example, this might be 40mm.Step 2Then, measure from the centre M5 screw to the edge of your existing cylinder on the outside of your door. This is the 'A' measurement.  For example, this might be 50mm.Step 3Put these two measurements together to get the right size - your B measurement goes first e.g. 40/50.Step 4You can now choose your selected colour finish - Brass or Nickel.Experience the benefitsAdvanced pin tumbler technology with superior physical strength.The platinum 3 Star Euro cylinder lock, is Yale’s most secure cylinder yet.Flat reversible dimple key with easy code identification and key duplication.Anti-Snap GuaranteeIn the unlikely event that your cylinder is snapped under attack due to a forced break-in, we will give you £1000 compensation*. *Terms and conditions applyRegister your cylinderSecurity up to StandardBSI KitemarkedThe BS4 Maximum Security Nightlatch has been independently tested by BSI to be awarded the British Kitemarked TS007:2014 3 star accreditation.Sign inSecured by Design Approved Secured by Design, the official police security initiative that works to improve security of buildings and their immediate surroundings have accredited the BS4 Maximum Security Nightlatch under the Police Preferred Specification scheme.Maximum Security10 Year GuaranteeAnti-DrillAnti-SawAnti-BumpAnti-PickIdeal for use on wooden front doorsAnti-SnapInstall your new cylinder in under 2 minutes! Works with{{widget type="MagentoCatalogWidgetBlockProductProductsList" template="Yale_Theme::catalog/enhanced-products/widget/content/grid.phtml" anchor_text="" id_path="" show_pager="0" products_count="3" condition_option="category_ids" condition_option_value="240" type_name="Catalog Products List" conditions_encoded="^[`1`:^[`aggregator`:`all`,`new_child`:``,`type`:`Magento||CatalogWidget||Model||Rule||Condition||Combine`,`value`:`1`^],`1--1`:^[`operator`:`==`,`type`:`Magento||CatalogWidget||Model||Rule||Condition||Product`,`attribute`:`category_ids`,`value`:`240`^]^]" sort_order="position"}}You may like this{{widget type="MagentoCatalogWidgetBlockProductProductsList" template="Yale_Theme::catalog/enhanced-products/widget/content/carousel.phtml" anchor_text="" id_path="" show_pager="0" products_count="3" condition_option="category_ids" condition_option_value="151" type_name="Catalog Products Carousel" conditions_encoded="^[`1`:^[`aggregator`:`all`,`new_child`:``,`type`:`Magento||CatalogWidget||Model||Rule||Condition||Combine`,`value`:`1`^],`1--1`:^[`operator`:`==`,`type`:`Magento||CatalogWidget||Model||Rule||Condition||Product`,`attribute`:`category_ids`,`value`:`151`^]^]" sort_order="date_oldest

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