Types of Door Latches
Latches are made from various materials, finishes, and thicknesses depending on the engineering requirements. Engineers can choose an electro-galvanized lock to avoid corrosion and ensure long-lasting durability in harsh environments.
Other specifications include the level of security needed to secure an application. For example hook lock latches is more secure than a hasp lock and may require the use of padlocks.
Hook and Eye Latch
The hook and eye latches can be easily installed to lock gates, 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 need for fancy tools. The screw points are sharp and will pierce into wood quickly and easily for added stability and security.
To determine the right size of the hook, you must first identify the type of hook. Crosby Group(c): Look for the type of hook and size embossed near the eye or the clevis of the hook. The size in inches is on one side, and the size in millimeters is on the other. The clevis grab hook features an clevis that can be used for direct attachment to chains, whereas the eye rigging hook has a large eye designed for use with wire rope or synthetics. Pewag(c): The hook type, the size in millimeters and the grade of alloy is engraved on the lower surface of the hook bowl. CMCO Columbus McKinnon (c): Look at the "HA 800" or "HA 800-1000" and the size of the hook on lower part of the bowl, near the clevis.
Laclede(c) markets the Cartec chain hook. It's easy to spot since it has an elevated "Cartec" embossed on the bottom of the bowl and is either safety orange or red. Gunnebo(c) and CMCO Columbus McKinnon both have their names embossed on the lower section of the hook bowl. Gunnebo also has a swivel sling hook, that is identified by an "ELD" midway up the bowl. This hook features a wide eye that can spread web and round slings.
Clevis Latch
A clevis lock allows the user to attach a clevis to an anchor, and it prevents the hook from slipping off during a transfer of the load. Clevis latches can be found in a variety of styles, including ones that have spring-loaded handles and those with a safety lock. The safety lock is ideal for slip hooks because it ensures that the load won't be removed unless a force is applied downwards. This makes clevis-slip hooks compatible with ASME B30.9 Slings Standards and OSHA Regulations.
A typical clevis lock consists of an clevis pin that has an end with a tang, and a head that is formed at the other. These clevises, typically constructed from steel to give strength to the latch they are usually coated with zinc, silver or chromium. To prevent corrosion, they're typically coated with zinc, chrome or silver. They can also be tempered.
These latches are utilized in a myriad of applications that range from connecting chains and rigging equipment, to securing cargo in pickup trucks and on trailers. They're also employed for heavy-duty applications, such as securing cranes and machinery.
Some clevises have been molded using folded pieces, whereas others are made of machined pieces. They are built with a base that has a hole, whether threaded of unthreaded. They can be connected to other components using the clevis bolt.
The clevis pin can be threaded and fitted into an open or slotted hole. The pin is bigger than a bolt and designed to withstand heavy shearing forces and take an axial load.
Certain clevis locks are made of hardened to withstand the vibrations and stress of harsh environments. Some are even rated for overhead lifting, meaning they can withstand a greater amount of weight than the non-hardened versions. In addition to this the latch can be plated with a variety of metals, such as silver, nickel and chromium to increase its resistance to corrosion. They can also be powder coated or painted to add color and improve their appearance.
Self-Closing Lock
The latch's locking mechanisms can be as simple or complicated as the overall design. Often, these devices are built from metals to ensure strength and durability. helpful hints can also be powder coated or painted to enhance the appearance of the latch. Latches, regardless of the materials they are constructed from they must be able to withstand the effects of shearing, bending and bending forces. The thickness of the latches' barrels, backing plates and cams are key factors in determining whether they are medium-, light or heavy-duty.
You should choose the latch depending on your security requirements and the type of enclosure or door you plan to attach it to. A garden gate that is lightweight is an example. It can be secured using hook latch. However, a strong shed requires the use of a padlock with a hasp.
It doesn't matter whether you utilize an automatic latch or not. The most important thing is to ensure that it is closed properly. This will reduce the chance of accidental disengagement, which can result in workplace accidents. If you're not sure what to look for to determine whether a self-locking hook is ready for loading Look for locks that have an internal stop or trigger mechanism that prevents it from opening.
Another important consideration is the handiness. Certain bolt, rotary, and slam designs have been designed specifically to be right-handed or left-handed. Left-handed models are usually positioned in the middle of the latch and are typically used on doors that face inward toward the inside of the building. The right-handed models are placed on the outside of the door and are employed on doors that face outward away from the interior of the building.
There are also latches that can be used to work around the Adams Rite-style commercial door locking latches that are found on many truck and bus fleets. These tools enter the assembly through a cutout on the door's side adjacent to the latch. They then pull the swing bar to pull the latch back. These tools are available on the internet or in many hardware stores that stock Adams Rite latches.
Keyed Latch
Latches are used to keep doors and gates closed. There are many different types of latches and each serves a specific function. Some common latches used for doors include hook, clevis and cam latches and compression latches as well as the rotary ones. Some latches have locking mechanisms like a panic bar or keyed lock. Metals are the most common material for latches, but other materials can be used. They are also subjected to secondary processes in order to improve the quality of their surface. Common finishes for latches include polishing, plating and polishing, as well as paint coating, and powder coating.
A keyed latch is a latch with a cylinder that requires a special key to unlock it. The pins and tumblers in the cylinders align with the cut on the key to unlock the latch. Certain locks come with additional features, such as antipick or antidrill protection.
A hasp is a type of latch comprised of a steel band and a staple. The strap has a hole punched at one end that fits over the staple and is connected to the other end of the strap using a hinge that allows it to move. Latches can also be made out of other materials, such as plastics and rubbers however metals are often used due to their formability and machinability. They also have strength.
Door latches are typically crafted out of metals, however there are some exceptions. For instance certain latches are made using plastics to lessen the weight of doors or to meet other design specifications. Different types of latches are used for specialized applications such as latches designed to be activated by pushing the lever or handle, which allows emergency exits from buildings and other settings.
There are two types of door latches: levers and knobs. Knobs are typically found on older doors while levers are more prevalent in modern designs. Some latches are reversible, meaning that they can be opened from either side, which is especially suitable for doors in interiors where there are no windows. A pawl lock is a simple version of a cam lock that can be unlocked by reversing the quarter-turn. It's commonly employed in electronic enclosures, trailers, buses, RVs, and trucks.