ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel

Lockwood Anti-Bump Lock Cylinders

Updated on August 19, 2013

Lockwood Lock with High Security Cylinder

Lockwood Deadlock
Lockwood Deadlock | Source

Lockwood breath new life into the Pin Tumbler Lock

Lockwood Australia have been the major manufacturer of high quality door locks and door furniture. Their dominance of the Australian market has been based on making locks of high quality and their lock cylinders have been made with high tolerances.

Lockwood locks were made in Australia but like most manufacturers have moved their manufacturing off-shore to stay competitive.

Recently the Lockwood cylinders used in a range of their domestic products such as the Lockwood 001 Deadlatch have had a significant jump in quality. The alloys which their cylinders are made from have become much harder and their manufacturing tolerances much tighter.

The result of the better, more accurate lock cylinders has meant they have become harder to pick. To pick a lock with higher tolerances requires more skill and more time.

Lock Security

Would you rather have a lock that can be picked or bumped open or one that has to be drilled open if the keys are lost

See results

Spool pins stop lock bumping

Unfortunately the same is not true for lock bumping. Lock bumping seems to favor well manufactured locks with tight tolerances. This left Lockwood with a big problem. How do you keep a lock from being bumped without redesigning the entire cylinder.

Lockwood has introduced a simple "Old School" pinning configuration into their range of domestic locking products. They are using spool pins as top pins in their locks. Spool pins or Mushroom pins are nothing new. Many manufacturers have used them for many years, especially Yale in their pin tumbler locks.

Now, anyone that knows anything about picking locks will be saying "Yeah, but spool pins are ineffective against bumping and mechanical pick guns". While this is true, you have to look a bit closer at the way Lockwood have used spool pins.

Instead of using just one or two spool pins in their locks, Lockwood have used them in every pin chamber. The design is not used as a pick deterrent as in Yale locks whereas the lock is picked, the mushroom pin will bind. Lockwood has designed their locks to bind from the start.

Lockwood Cylinder and Barrel

Exploded view Lockwood Cylinder
Exploded view Lockwood Cylinder

Lock pins make the cylinder bind

A closer look at the top pins shows how they have been made with almost all the pin machined at a smaller diameter leaving only a minimal top and bottom edge. The pin is designed to bind in the chamber when no key is inserted or when a bump key is used.

The results of all the pins binding is that the lock barrel turns when only turning pressure is put upon it. This small turning of the barrel is enough to stop the pins from moving into their opening position. The same happens when the lock is bumped. As the barrel is slightly turned the pins just bind, which makes bumping almost impossible.

Lockwood Spool Top Pins

Lockwood Spool Top Pins
Lockwood Spool Top Pins

Clicky Locks

As the top pins are always binding it gives the key a rough, unlubricated feel as it is inserted into the lock. It seems the harder alloys used by Lockwood prevent the pin chambers from dinting or wearing under constant binding. The roughness of the key is a trade off against the added security.

The sharp edges of the top pins also make for a rougher feel to the turning of the key. Keys for these locks have to be a lot more accurate and a worn key will definitely cause the lock to be clicky or not to operate.

It seems Lockwood’s' tighter manufacturing tolerances have been put to good use turning their older standard cylinder design into a standard off the shelf high security lock.

Comments on Lockwood High Security Cylinders

    0 of 8192 characters used
    Post Comment

    • profile image


      3 years ago

      Just makes life harder for locksmiths. It turns a simple lock out into a rekey, and if the client has lost their keys but have access. You won't be shim the cylinder either. I suggest everyone does what people at my work are doing. Telling Lockwood they're boycotting their 001 and fitting a Whitco.

    • profile image


      3 years ago

      Mate. ASSA ABLOY still Manufacture in Oakleigh, Victoria.

      Not everything is made in Asia!

    • jonnycomelately profile image


      5 years ago from Tasmania

      It's great to see your passion and enthusiasm for your chosen area of expertise. Encourage more people, the young especially, to strive for excellence.


    This website uses cookies

    As a user in the EEA, your approval is needed on a few things. To provide a better website experience, uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

    For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at:

    Show Details
    HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
    LoginThis is necessary to sign in to the HubPages Service.
    Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
    AkismetThis is used to detect comment spam. (Privacy Policy)
    HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
    HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
    Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
    CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
    Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the or domains, for performance and efficiency reasons. (Privacy Policy)
    Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
    Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
    Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
    Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
    Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
    VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
    PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
    Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
    MavenThis supports the Maven widget and search functionality. (Privacy Policy)
    Google AdSenseThis is an ad network. (Privacy Policy)
    Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
    Index ExchangeThis is an ad network. (Privacy Policy)
    SovrnThis is an ad network. (Privacy Policy)
    Facebook AdsThis is an ad network. (Privacy Policy)
    Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
    AppNexusThis is an ad network. (Privacy Policy)
    OpenxThis is an ad network. (Privacy Policy)
    Rubicon ProjectThis is an ad network. (Privacy Policy)
    TripleLiftThis is an ad network. (Privacy Policy)
    Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
    Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
    Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
    Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
    ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
    Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)