Types of Door Latches
Latches are made from a variety of materials as well as finishes and thicknesses in accordance with the engineering requirements. For instance, engineers can select a galvanized latch to avoid corrosion and ensure the durability even in harsh environments.
Other specifications include the degree of security required to secure an application. For example, a hook lock latch is more secure than a hasp lock and may require the use of padlocks.
Hook and Eye Latch
The hook and eye latch is an easy-to-install method to secure gates, doors, windows cabinets and sheds. It's also great to secure screens, porches and storm panels. No fancy tools are required and the hook can be screwed in by hand in minutes. The sharp screw points bite into wood quickly and effectively to increase security and stability.
To determine the right hook size, you must first determine the type of hook. Crosby Group(c): Look for the type of hook and size embossed close to the eye or the clevis of the hook. hook deadlocks 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 chain, while the eye rigging hook comes with an eye large enough to use with synthetic rope or wire rope. Pewag(c): The hook type, size in millimeters and the alloy grade is engraved on the lower portion of the hook bowl. Columbus CMCO McKinnon(c): Look for "HA 800" or HA 800-1000" and the size of the hook embossed on the lower portion of the bowl close to the clevis.
Laclede(c) markets the Cartec chain hook. It is easy to recognize as it has "Cartec" raised embossed at the bowl's bottom and safety red or orange. Gunnebo(c) and CMCO Columbus McKinnon both have their names embossed on the lower section of the hook bowl. Gunnebo also has an swivel sling hook that is identified by an "ELD" halfway across the bowl. This hook features a wide eye that can spread round and web slings.
Clevis Latch
A clevis lock lets the user to attach a clevis to an anchor, and it prevents the hook from coming off during a transfer of load. Clevis latches are available in a variety of styles including those with spring-loaded handles and those with a safety lock. The safety lock is a great option for slip hooks as it ensures that the load won't fall off unless force is applied downwards. This feature makes clevis slip hooks compatible with ASME B30.9 Slings standards and OSHA regulations.
A standard clevis latch has a clevis pin and tang at one end, and a head that is formed on the other. The clevises are constructed of steel, which gives strength to the latch. To prevent corrosion, they're often coated with chrome, zinc, or silver. They can also be tempered.
These latches can be used for different purposes, from connecting chains to the rigging equipment, to securing loads in pickup trucks and trailers. They can also be utilized for heavy duty applications, such as the securement of machinery and cranes.
Some clevises have been molded with folded pieces while others are made of machined pieces. They are built with a base that has a hole, either threaded or unthreaded. They can be welded to other components with a clevis bolt.
The clevis pin is usually threaded, and can be inserted into a hole which is smooth or slotted. The pin is larger than a bolt and designed to withstand large shearing forces and to withstand an axial load.
Certain clevis locks are made of hardened so they can endure the stress and vibrations of harsh environments. Some are rated for overhead lifting. This means they are able to support more weight than non-hardened models. A latch that is hardened can be plated with various metals like silver or nickel to enhance the resistance to corrosion. Powder coating or painting can be used to improve their appearance and give them color.
Self-closing Lock
The locking mechanisms can be as intricate or simple as the overall design. These devices are usually constructed from metal to ensure strength and durability. Powder-coated or painted latches can also enhance their appearance. Latches, regardless of the materials they are constructed from, must be able resist being able to withstand shearing, bending, and other impact forces. The thickness of the latch's barrels, backing plates and cams is an important element when determining whether they are medium, light, or heavy-duty.
The type of latch you choose should be based on your security needs and the type of door or enclosure that it will be attached to. A lightweight garden gate is an example. It can be secured with a hook latch. However, a sturdy shed requires the combination of a padlock and a hasp.
It doesn't matter whether you use an automatic latch or not. The most important thing is that it is properly closed. This will reduce the chance of accidental disengagement that could lead to work-site accidents. If you are not sure whether the hook is able to be loaded, search for a lock with an internal trigger or stop mechanism.
Another factor to consider is handiness. Certain bolt, rotary, and slam designs have been designed specifically to be left-handed or right-handed. Left-handed latches are typically placed in the middle of the latch on doors that face inwards toward the interior. The right-handed models are placed on the outside of doors and are designed for doors that are facing away from the inside.
There are tools that work around the Adams Rite style commercial door locking latches on many truck and bus. These devices enter the assembly through a cutout located on the door's side next to the latch. They then pull on the swing bar to retract the latch. You can locate these tools on the internet or at many hardware stores that stock Adams Rite latch products.
Keyed Latch
Latches are used to close doors and gates. There are numerous kinds of latches, and each serves a specific function. The most common latches used for doors include hook or clevis latches, cam and cam as well as compression latches and rotary ones. Some latches include locking mechanisms, for example keys for locks or a panic bar. Metals are the most popular material for latches, but other materials can also be used. They can also be subjected to secondary processes in order to improve their quality of surface. The finishes available for latches include painting, powder coating, and polishing.
l4v hook lock are latch with a cylinder that requires a key to unlock it. Cylinders are made up of tumblers and pins that align with the cut marks on keys to unlock the latch. Some locks are equipped with extra features, like anti-pick or anti-drill security.
A hasp is a lock comprised of a steel band and a staple. The strap has a punched slot at one end that is able to fit over the staple and the staple is attached to the other end of the strap using a hinge that allows it to move. Latches can also be made from other materials such as plastics and rubbers however metals are commonly utilized due to their formability as well as their machinability and strength.
Door latches are usually made from metals, however there are some exceptions. For instance some latches are constructed from plastics to reduce the weight of a door or to meet other design requirements. Other latches have specialized uses, such as latches designed to be activated with handles or levers. This permits emergency exits from buildings and other environments.
There are two types of door latches, which are levers and knobs. Knobs are generally found on older doors while levers are more prevalent in the latest designs. Some latches can be opened on both sides. This is useful for interior doors with no windows. A the pawl latch is a straightforward type of cam latch that can be locked with one quarter-turn, or unlocked using a reverse quarter-turn. It is often utilized on electronic enclosures, as well as in buses, trailers RVs and trucks.