Types of Door Latches
Latches can be made in a variety of materials in various thicknesses, finishes, and finishes in accordance with the engineering requirements. For instance, engineers can choose a latch that is galvanized to prevent corrosion and maintain the durability even in harsh environments.
Other specifications include the level of security required to secure an application. For example hook lock latches is more secure than a hasp, and could require the use of padlocks.
Hook and Eye Latch
The hook and eye latch is an easy-to-install method of locking gates, doors, windows cabinets and sheds. It's also great for securing storm panels, porches and screens. The hook can be screwed in place by hand without the use of any fancy tools. The sharp screw tips pierce into wood easily and efficiently to increase security and stability.
To determine view of hook, first identify the hook type. Crosby Group (c): Check the eye or the clevis for the type of hook embossed and size. The size in inches is on one side, and the size in millimeters is on the other. The clevis grab hook comes with the clevis to attach directly to chains, whereas the eye rigging hook features a large eye designed for use with wire rope or synthetics. Pewag(c) hook type, size (in mm) and the grade of alloy are engraved on the lower part of the hook bowl. CMCO Columbus McKinnon (c): Look at the "HA 800" or "HA 800-1000" as well as the hook size on the lower portion of the bowl, near the clevis.
cabin hook lock (c) sells the Cartec chain hook. It is easy to recognize as it has "Cartec" embossed at the bottom of the bowl, and safety red or orange. Gunnebo(c) and CMCO Columbus McKinnon both have their names embossed on the lower portion of the hook bowl. Gunnebo also has the swivel hook, that is identified by an "ELD" midway up the bowl. The hook is equipped with a large eye which can distribute round and web slings.
Clevis Latch
A clevis lock lets users to secure the clevis to an anchor and prevents the hook from falling off during the transfer of loads. Clevis latches can be found in a variety and styles, including those with spring-loaded handles, as well as ones with a safety lock. The safety lock is a great option for slip hooks since it guarantees that the load won't come off unless a force is applied to the inside. This feature makes slip hooks for clevis compatible with ASME B30.9 Slings standards and OSHA regulations.
A typical clevis latch has a clevis pin and tang at one end, and a formed head on the other. The clevises are made from steel, which provides strength to the latch. They're usually plated with silver, zinc, or chromium to resist corrosion. They can be made harder.
These latches are used in a variety of applications that range from connecting chains and rigging equipment, to securing cargo in pickup trucks as well as on trailers. These latches can also be employed in heavy-duty applications like securing cranes and machinery.
Certain clevises have been made using folded pieces, whereas others are made from machined pieces. They are built with a base that has an opening, which is threaded of unthreaded. They can be attached to other components with a bolt for clevis.
The clevis pin is typically threaded, but it can be inserted into a hole that's smooth or slotted. The pin is larger than a bolt, and is designed to withstand large shearing forces as well as an axial load.
Many clevis latches are hardened to withstand the stress and vibration of use in harsh environments. Some are rated for overhead lifting. This means they are able to support more weight than the non-hardened models. A latch that is made of hardened material can be plated with various metals, including nickel or silver to increase its corrosion resistance. Painting or powder coating can be used to improve their appearance and add colour.
Self-Closing Lock
The locking mechanism could be as complicated or simple as the overall design. Most often, the latches are constructed from metals to ensure strength and durability. They may also be powder coated or painted to enhance the latch's appearance. Latches, regardless of the materials they are constructed from, must be able resist the effects of shearing, bending and bending forces. The thickness of the barrels, backing plates and cams play a major role in determining if they're light-, medium-, or heavy duty.
The kind of latch you choose is dependent on your security requirements and the type of enclosure or door it will be connected to. A gate for the garden that is lightweight, for example, can be secured using hook latch. However, a strong shed requires the combination of a padlock and hasp.
Whether you use a self-closing latch or not the most important factor is to ensure that it is shut properly. This reduces the risk of a mishap that could result in workplace injuries. If you are not sure whether the hook is able to be loaded, search for a lock that has an internal stop mechanism or trigger.
Another important consideration is handedness. Certain types of bolt, rotary, and slam latches are designed to be left-handed or right-handed. Left-handed latches are usually positioned 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 face outward away from the interior of the building.
There are also specialized latch tools designed to bypass the Adams Rite-style commercial door locking latches found on a lot of bus and truck fleets. These tools enter the assembly through a cutout in the door's side adjacent to the latch. They then pull the swing bar to retract the latch. These tools are available online or at the majority of hardware stores that sell Adams Rite latches.
Keyed Latch
Latches are used to keep gates and doors closed. There are a variety of latches. Each is designed to serve a specific purpose. Common door latches include hook and clevis, cam compression, and Rotary latches. Some latches are also equipped with locking mechanisms, such as the keyed lock or panic bar. Latches can be crafted from various materials, with the metals being the most popular. They may also undergo additional processes to improve their properties on the surface. Common finishes for latches include polishing, plating and polishing, as well as paint coating, and powder coating.
A keyed latch has a cylinder and requires an unlocking key. Cylinders have 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 protection.
A hasp is a type of latch comprised of a steel band and a staple. The staple is attached using a hinge to the other end of the strap with an opening inside it. Other materials, such as plastic and rubber can be utilized to create latches however, metals are preferred due to their formability, machinability and strength.
Metal is the most common material for door latches, however, there are a few exceptions. For instance certain latches are made using plastics to lessen the weight of doors or to meet other design specifications. Some latches are designed for specific purposes for instance, latches that are designed to be activated using a lever or handle. This allows emergency exits from buildings and other areas.
There are two primary types of door latches namely knobs and levers. Levers are more prevalent on newer designs, while knobs are found on older models. Some latches are reversible meaning they can be opened from either side, which is useful for interior doors where there are no windows. A pawl lock is a simple version of a cam-lock which can be unlocked by reversing the quarter-turn. It is often employed on electronic enclosures as well as in trailers, RVs, buses and trucks.