Types of Padlocks
Types of Padlock Styles
Padlocks are used in virtually every business, organization and home. In order to fill the needs of these different groups, a wide variety of options and styles have been developed. The most popular types of padlocks are the following:
- The body of a laminated padlock consists of multiple pieces of
metal stacked on top of each other to form a tough,
- Lockout padlocks
- Padlocks designed specifically for use in lockout programs
typically have a provision on the lock to write the users name and
often come with only one key to limit access to the lock.
- Weather resistant
- Weather-resistant locks either have a shroud to protect the
lock from the elements or are constructed from weather-resistant
materials such as stainless steel. Although regular locks will
work outside for a period of time, they tend to rust or corrode
over time to a point where they can no longer be opened with the
key or combination sequence.
- A combination lock uses a rotary dial or series of buttons to
unlock the device rather than a conventional key.
- Combination with key control
- A combination lock with key control can be opened with a key or
a combination. This type of lock is typically used in schools and
locker rooms. The control key is capable of opening all the
combination locks in that set.
- Guarded/shrouded/shielded padlocks
- A guarded or shrouded padlock has solid metal guards that
protect and surround the shackle on both sides, leaving only the
top of the shackle exposed. The guards make it nearly impossible
to cut the shackle with a bolt-cutter.
- High security
A high-security lock typically has one or more of the following
options to increase its level of protection:
- Hardened steel shackle
- Shrouded shackle
- Pick-resistant key cylinder
- Reinforced locking mechanism to resist prying
For most applications, the typical padlock that comes with two keys works well. However, there are many applications where different keying options are required. The most common keying options are:
- Keyed alike
- All the keys open all the locks in a set of padlocks. Every key
and every padlock is exactly the same. If the padlocks are not
sold in a set, they typically need to be purchased at the same
time in order to be keyed alike.
- Keyed different
- Padlocks do not have duplicate keys in that set or on that
order. Each padlock has a unique key that will not open any of the
other locks in that set. As with the keyed alike option, if the
padlocks are not sold in a set, they need to be ordered at the
same time in order for them to be specifically keyed different.
- Master keyed
- Padlocks are keyed different padlocks with the addition of a
single master key that can open all the locks. The keys that come
with the locks can only open that one lock, but an additional
master key that will open all the locks in a series can be ordered
separately. The master key and the master keyed padlocks must be
ordered at the same time.
- The cylinder in rekeyable padlocks can be removed in order to
(a) change the pinning or (b) replace the original cylinder with a
new one, restoring security quickly and economically. This is
ideal for situations where keys are lost or stolen.
- Interchangeable core padlocks
- These padlocks and door locks provide an instant security
solution because they do not require disassembly to remove the
core (cylinder). The control key fits into the padlock just like
the user key, but actuates the interchangeable core retaining
mechanism to allow the removal and replacement of the core
(cylinder). Interchangeable cores can be used in both padlocks and
door locks for facility-wide security systems.
- Non-removable key
- The key cannot be removed from the padlock when the lock is
open. This helps prevent users from accidentally leaving the
padlock in the open position.
- Reserved key system
- The reserved key system is not available to the general public
but is a system where key blanks are cut and supplied directly
through padlock distributors when requested by registered
end-users. These locks are typically used by the government and
some larger companies.