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Types of Door Latches Latches are made from various materials in various thicknesses, finishes, and finishes in accordance with the engineering requirements. Engineers can pick a lock that is galvanized to avoid corrosion and to ensure its durability in harsh environments. Other specifications include the level of security required to secure an application. For example, a hook lock latch is more secure than a hasp, and could require the use of a padlock. Hook and Eye Latch The hook and eye latch can easily be used to lock gates, windows cabinets, sheds, and gates. It's also ideal for securing screens, porches and storm panels. The hook can be screwed in place by hand, without the need for fancy tools. The sharp screw tips pierce into wood easily and efficiently to increase security and stability. To determine the correct hook size, you must first determine the type of hook. Crosby Group ©: Take a look near the clevis or eye for the type of hook embossed and size. The size in inches is on one side, and the size in mm is on the other. The clevis grabber hook features the ability to connect directly to chain, whereas the eye rigging features a large, angled eye to use with synthetics or wire rope. Pewag©, the hook type size (in mm) and the grade of alloy are embossed in the lower part the bowl of the hook. CMCO Columbus McKinnon © Take a look at the “HA 800” or “HA 800-1000” and the hook size on the lower part of the bowl, near the clevis. Laclede© is the marketer of the Cartec chain hook. It is easy to recognize because it features “Cartec” embossed on the bowl's bottom and safety red or orange. Gunnebo© and CMCO Columbus McKinnon both have their names embossed on the lower part of the hook bowl. Gunnebo also has the swivel hook, which is identified by an “ELD” halfway up the bowl. This hook features a wide eye that can spread round and web slings. Clevis Latch A clevis latch enables the user to attach the hook of a clevis to an anchor point, and it also helps prevent the hook from slipping loose during the transfer of a load. Clevis latches are available in a variety of different styles, like those with spring-loaded handles or ones with safety locks. The safety lock is perfect for slip hooks since it ensures that the load won't be removed unless a force is applied to the inside. This makes clevis slip hooks compatible with ASME B30.9 Slings standards and OSHA regulations. A typical clevis lock consists of the clevis pin, which has a the tang at one end and a shaped head at the other. These clevises are typically constructed from steel to give the latch with strength, are often plated with zinc, silver or chromium. To resist corrosion, they're typically coated with zinc, chrome or silver. They can also be tempered. These kinds of latches can be used for different purposes such as connecting chains, rigging equipment to securing loads in pickup trucks and trailers. They can also be utilized for heavy duty applications, like securing cranes and machinery. Certain clevises are constructed of machines or folded pieces that are molded into them. They have a base with an opening, which is threaded or not. They can be attached to other components using a bolt for clevis. The clevis pin is usually threaded, and it can be fitted into a hole that's either smooth or slotted. The pin is larger in diameter than bolts, and it's designed to support large shearing stresses and can be able to withstand an axial load. Many clevis locks are hardened so they can stand up to the strain and vibrations of harsh environments. Some are designed for overhead lifting. This means they can support more weight than models that are not hardened. In addition the latch can be coated with a variety of metals including silver, nickel and chromium to increase its resistance to corrosion. They can be painted or powder coated to add color and improve their appearance. Self-closing Lock The locking mechanisms of latches can be as simple or intricate as the overall design. These devices are often constructed from metal to ensure durability and strength. They may also be painted or powder coated to enhance the appearance of the latch. Latches, regardless of the materials they are made of are required to resist bending, shearing and impact forces. The thickness of the barrels, backing plates and cams are the primary factors in determining if they are light-, medium-, or heavy duty. The kind of latch you choose should be dependent on your security requirements and the type of enclosure or door it will be attached to. A lightweight garden gate is an example. It can be secured using hook latch. However, a sturdy shed requires a combination of a padlock and a hasp. If you are using a self-closing latch or not, the most important thing is to ensure that it is properly closed. This will reduce the chance of accidental disengagement that could lead work-site injuries. If you're unsure what to look for to determine if a self-locking hook is ready to load, look for locks that have an internal stop mechanism or trigger mechanism that stops it from opening. Another important consideration is handedness. Some designs of rotary, bolt, and slam locks are made to be either left-handed or right-handed. Left-handed latches are generally placed in the center of the latch on doors that face towards the interior. The right-handed designs are located on the outside of the door and are utilized on doors that are facing outwards from the interior of the building. There are also special latches that can be used to work around the Adams Rite-style commercial door locking latches on many truck and bus fleets. These tools are inserted through a cutout on the side of the commercial door next to the latch and reach up within the assembly to pull the swing bar, which will retract the latch back into the open position. These tools are available online or in many hardware stores that stock Adams Rite latches. Keyed Latch Latches are used for closing gates and doors. There are numerous kinds of latches, and each type serves a specific function. sliding door hook lock with key TheKeyLab used for doors include hook cam, clevis and hook latches as well as compression latches and those that rotate. Some latches also include locking mechanisms, such as keys for locks or a panic bar. Latches are made from various materials, with the metals being the most sought-after. They may also undergo additional processes to enhance their appearance. The finishes available for latches include painting, powder coating and polishing. A keyed latch has a cylinder and requires an unlocking key. Cylinders contain pins and tumblers that align with the cuts in a key to unlock the latch. Some locks are equipped with extra features, like anti-pick or anti-drill security. A hasp is a latch comprised of a steel band and a staple. The staple is attached using a hinge to the other end of the strap that has a slot inside. Latches can be made out of other materials, such as plastics and rubbers, but metals are more commonly used due to their shapeability and machinability. They also have strength. Door latches are typically crafted from metals, however there are exceptions. Some latches, for instance made of plastic, are designed to reduce the weight or meet other design requirements. Other latches have specialized uses, such as latches designed to be activated with a lever or handle. This allows emergency exits in building and other areas. There are two main kinds of door latches, namely knobs and levers. Knobs are typically used on older doors, while levers are more prevalent in newer designs. Some latches are able to be opened on both sides. This is useful for interior doors without windows. A pawl latch is a simple version of a cam latch that can be locked using one quarter-turn, or unlocked using reverse quarter-turn. It is commonly employed on electronic enclosures as well as in RVs, trailers, buses and trucks.