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Different Types of Security Locks

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Hasp

 

  • Consists of a metal hinge and an anchoring bolt so locks can be secured to gates, sheds and garages.
  • Conceals the mounting screws when the lock is in place.
  • Insert a padlock through the ring and lock to secure the hasp.
  • Another type is the hasplock, which has a padlock attached to it, which makes it impossible to lose the padlock when the hasp is open.

    • Barrel Bolt

     

  • A sliding lock mechanism used to provide security for average weight doors and windows.
  • Is surface mounted where the bolt slides into a catch on the other side of the door.
  • Available in decorative finishes and with surface or universal strikes.
  • Some have spring action to hold the bolt in place, and some are lockable.

    • Strike

     

  • The metal plate the latch slides into on the doorjamb or frame.
  • All new locksets come with strikes, but some homeowners may want to replace them with high-security strikes or replace damaged ones.
  • Adjustable strikes are available that provide 1/4” adjustment to allow for door and frame warpage.


    • Latch Guard

     

  • Used on in-opening doors.
  • Reinforces the door and prevents spreading of the frame.
  • The standard 7” latch guard fits all backsets, deadbolts and key-in-knob locks.
  • The 12” latch guard also fits all double locks, mortise locks and access control locks.
  • Latch guards for out-opening doors protect the latch or bolt. Several sizes and types are available, ranging from 6” to 12”.

    • Combination Lock

     

  • User must dial a combination to open the lock.
  • Hardened solid steel alloys make better locks and shackles.


    • Pin-Tumbler Padlock

     

  • Provides maximum security for valuables.
  • Pin-tumbler locking mechanisms make padlocks harder for thieves to pick.
  • Tumblers with five or more pins provide the best security, while four pin is the next best.
  • Hardened solid steel and steel alloys make better locks and shackles.
  • Solid extruded brass padlocks are more resistant to rust than steel, but can be damaged more easily.

    • Tubular Cylinder Padlock

     

  • Offers many key changes by replacing the cylinder.
  • Usually used in electronic security systems, but some owners of motorcycles and expensive bikes use them as well.
  • Pins are arranged in a circle and are exposed.
  • The key is cylindrical


    • Cable Lock

     

  • Uses the combination of a lock and cable to lock and secure objects in a variety of applications. 
  • Some models have a chain or cable permanently attached to a combination or keyed lock.
  • Chain or cable often has a protective plastic coating to prevent scratching.



    • U-Bar Lock

     

  • Provides maximum protection for bicycles, gates, etc
  • Hardened steel shanks resist cutting.
  • Available in combination lock or keyed lock versions.



    • Gun Lock

     

  • Fits over the trigger housing of guns to prevent firing of the weapon.
  • Some models have a sound alarm to warn that the gun is being tampered with.
  • Some have tamper-evident devices to alert owners that the gun has been disturbed.
  • Some models can lock multiple guns at once.


    • Trailer Lock

     

  • Used to secure standing trailers by rendering the towing device inoperable.
  • Locks cover or fill the coupler socket so it cannot be mounted on a ball.
    • Courtesy of NRHA.org
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