Types of Door Latches
Latches are made of various materials, finishes and thicknesses to meet the specific requirements of engineering. Engineers can choose a lock that is galvanized to avoid corrosion and to ensure its durability in harsh environments.
Other specifications include the degree of security required to secure an application. For example hook lock latch es is more secure than a hasp lock and might require the use 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. There aren't any fancy tools needed and hooks can be screwed in by hand within a matter of minutes. The sharp screw points pierce into wood quickly and effectively to increase security and stability.
To determine the proper hook size, first determine the type of hook. Crosby Group(c): Look for the hook's type and size embossed close to the eye or clevis of the hook. The size is displayed on both sides. The clevis grabber hook comes with the ability to connect directly to chain, while the eye rigging comes with an eye with a large, angled angle for use with synthetics or wire rope. Pewag(c): The hook type, size in millimeters and the grade of alloy is engraved on the lower part 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 part of the bowl, near the clevis.
Laclede(c) sells the Cartec chain hook. It's easy to spot as it has a raised "Cartec" embossed near the bottom of the bowl and is either safety orange or red. Gunnebo (c) and CMCO Columbus McKinnon 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 has a large eye that can spread round and web slings.
Clevis Latch
A clevis lock lets the user to attach the clevis to an anchor, and it prevents the hook from coming off during the transfer of the load. Clevis latches are available in different designs, such as those with spring-loaded handles or ones equipped with safety locks. The safety lock is a great option for slip hooks as it guarantees that the load won't come off unless a force is applied to the inside. This makes clevis-slip hooks compatible with ASME B30.9 Slings Standards and OSHA Regulations.
A standard clevis latch has the clevis pin as well as tang on one side and a head that is formed on the other. These clevises are usually made of steel to provide strength for the latch, are often plated with zinc, silver, or chrome. To prevent corrosion, they're usually coated with chrome, zinc or silver. They can also be tempered.
These latches can be used for various applications including connecting chains to rigging equipment to securing loads in pickup trucks and trailers. van hook lock fitting employed for heavy-duty applications, like securing cranes and machinery.
Certain clevises are molded using folded pieces, whereas others are constructed from machined pieces. Their bases have holes that are threaded or unthreaded and they can be secured to other components using an clevis bolt, or a clevis hanger.
The clevis pin is threaded and fit into a smooth or slotted hole. The pin is bigger than a bolt and designed to withstand large shearing forces as well as an axial load.
Many clevis locks are hardened so they can endure the stress and vibrations of harsh environments. Some are even rated for overhead lifting, which means they can withstand a greater amount of weight than the non-hardened versions. A latch that is hardened can be plated with a variety of metals, including nickel or silver to increase its corrosion resistance. They can be painted or powder coated to add color and enhance their appearance.
Self-closing Latch
The locking mechanisms of latches can be as simple or complex as the overall design. Most often, these devices are made of metals for durability and strength. They can also be powder coated or painted to improve the appearance of the latch. Whatever the material used to manufacture them the latches have to be able to withstand the bending, shearing and impact forces. The thickness of the barrels, backing plates and cams are key factors in determining if they're medium-, light or heavy-duty.
You should choose the latch according to your security requirements as well as the type of enclosure or door that you will be attaching it to. For example, a lightweight garden gate can be secured by hook latches, whereas a sturdy shed door requires a padlock and a hasp combination.
It doesn't matter if employ an automatic latch or not. The most important thing is to ensure that it is shut properly. This helps reduce the risk of accidental disengagement, which could lead to work-site accidents. If you're not sure what to look for to determine if a self-locking hook is ready for loading make sure you choose locks that have an internal stop or trigger mechanism that blocks it from opening.
Another factor to consider is the handedness. Certain designs of bolt, rotary, and slam latches are specifically designed to be left-handed or right-handed. Left-handed latches are generally placed in the middle of the latch on doors that are facing inwards toward the interior. The right-handed models are positioned on the outside of the doors and are used for doors that are facing away from the interior.
There are also specialized tools that can bypass the Adams Rite style commercial door locking latches that are found on a variety of trucks and buses. These devices enter the assembly through a cutout in the door's side next to the latch. They then pull the swing bar to retract the latch. You can find these tools on the internet or at many hardware stores that sell Adams Rite latch products.
Keyed Latch
Latches are used to close gates and doors. There are numerous kinds of latches, and each type has a particular purpose. Some common door latches include hook or clevis, cam compression and rotary latches. Some latches include locking mechanisms like a panic bar or keyed lock. Metals are the most popular material for latches, but other materials can be utilized. They may also undergo additional processes to enhance their appearance. Common finishes for latches include polishing, plating, painting, and coating with powder.
van hook lock fitting are made of an cylinder that requires the use of a key to unlock. Cylinders are made up of tumblers and pins, which align with the cut marks on keys to unlock the latch. Some locks include extra features such as antidrill or antipick security.
Another type of latch is the hasp which consists of a metal strap and a staple. The staple is attached by hinges to the other end of the strap that has slots in it. Latches can be made from other materials including rubbers and plastics however metals are often used due to their formability, machinability, and strength.
Door latches are typically crafted out of metals, however there are exceptions. Certain latches, like, are made of plastic to make them lighter or meet other design requirements. Other latches have special uses, such as latches designed to be activated with the lever or handle. This permits emergency exits in building as well as other settings.
There are two types of door latches namely knobs and levers. Levers are more popular on modern designs, while knobs are found on older models. Some latches can be opened on both sides. This is useful for interior doors with no windows. A Pawl latch is a basic version of a cam latch that can be locked using a quarter-turn or unlocked with reverse quarter-turn. It's commonly employed in electronic enclosures, buses, trailers, trucks, and RVs.