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https://www.thekeylab.co.uk/van-security/
Types of Door Latches Latches are crafted in various materials and thicknesses finishes and sizes to meet specific engineering requirements Engineers can choose a lock that is galvanized to avoid corrosion and to ensure its durability in harsh environments Other specifications include the level of security needed for an application A hook lock latch for instance is more secure than hasps and may require padlocks Hook and Eye Latch The hook and eye latch is an easytoinstall way to lock gates windows doors cabinets and sheds Its also ideal to secure screens porches and storm panels The hook can be screwed in position by hand without the need for any fancy tools The sharp screw tips pierce into wood quickly and effectively for added security and stability To determine the correct hook size you must first determine the type of hook Crosby Groupc Look for the hooks type and size embossed near the eye or clevis of the hook The size in inches is on one side and the size in mm is on the other The clevis grab hook features an clevis that can be used for direct attachment to chain while the eye rigging hook features an eye large enough to use with synthetics or wire rope Pewagc The hook type the size in millimeters and the alloy grade is engraved on the lower part of the hook bowl Columbus CMCO McKinnonc Look for HA 800 or HA 8001000 and the hooks size embossed on the lower part of the bowl near the clevis Lacledec is the marketer of the Cartec chain hook It is easy to identify because it features Cartec embossed at the bottom of the bowl and safety red or orange Gunneboc and CMCO Columbus McKinnon both have their names embossed on the lower portion of the hook bowl In addition Gunnebo has a swivel hook that is identified by an ELD mark that is located midway across the bowl This hook has a wide eye that can spread web and round slings Clevis Latch A clevis latch permits the user to connect a clevis hook to an anchor point and it also helps prevent the hook from coming loose during loading transfer Clevis latches come in a variety of styles including ones that have springloaded handles as well as ones with a safety lock This is ideal for slip hooks as they guarantee that the load wont come off the hook unless an inward force is applied This makes clevisslip hooks compatible with ASME B309 Slings Standards and OSHA Regulations A typical clevis latch has an clevis pin and tang on one end and a head that is formed on the other The clevises are usually made of steel which provides strength to the latch To resist corrosion theyre typically coated with zinc chrome or silver They can be made harder These types of latches are suitable for different purposes from connecting chains to rigging equipment to secure loads in trailers and pickup trucks They are also used in heavy duty applications such as securing machinery and cranes Certain clevises are constructed of machined pieces and others are made of folded pieces that are molded into them Their bases feature an opening that is threaded or not and they can be fastened to other parts using the clevis bolt or clevis hanger The clevis pin is typically threaded but it can be inserted into a hole thats either smooth or slotted The pin has a greater diameter than a bolt and is designed to handle massive shearing stresses and take on an axial load A lot of clevis latches are made to withstand the stress and vibration of use in harsh environments Some are rated for overhead lifting This means that they can support more weight than models that are not hardened A hardened latch may also be plated with a variety of metals including silver or nickel to enhance the resistance to corrosion Painting or powder coating can be used to enhance their appearance and give them color SelfClosing Lock The locking mechanisms of latches can be as simple or intricate as the overall design The majority of the latches are constructed from metals to ensure strength and durability They can also be painted or powder coated to enhance the latchs appearance Whatever the material used in their manufacture latches should be capable of enduring being bent sheared and the forces of impact The thickness of the latches barrels backing plates and cams are the primary factors in determining if they are medium light or heavyduty The kind of latch you select is based on your security needs and the type of enclosure or door it will be attached to A gate for the garden that is lightweight for example can be secured using hook latches However a sturdy shed requires the use of a padlock and hasp Whether you use a selfclosing latch or not the most important thing is to make sure that it is shut properly This will reduce the chance of accidental disengagement which can cause workplace accidents If youre not sure if the hook is ready to be loaded search for a lock that has an internal stop mechanism or trigger Another factor to consider is the handedness Certain types of rotary bolt and slam latches are designed to be lefthanded or righthanded Lefthanded latches are usually positioned in the middle of the latch on doors that are facing towards the interior The righthanded models are positioned on the outside of doors and are designed to open doors away from the interior There are also special latches designed to work around the Adams Ritestyle commercial door locking latches that are found on a lot of bus and truck fleets These devices enter the assembly through a cutout in the side of the door close to the latch They then pull the swing bar to pull the latch back These tools are available on the internet or in most hardware stores that carry Adams Rite latches Keyed Latch Latches are used to keep gates and doors closed There are several types of latches Each one has a specific function The most common door latches are hook and clevis cam compression and rotary latches Some latches also include locking mechanisms for example the keyed lock or panic bar Latches can be made of different materials with metals being the most wellknown They may also undergo additional processes to enhance their properties on the surface Common finishes for latches include polishing plating paint coating and powder coating Keyed latches are made of an cylinder that requires an unlocking key The pins and tumblers in the cylinders are aligned with the keys cut to unlock the latch Certain locks come with additional features such as antipick or antidrill security Another type of latch is the hasp consisting of a steel strap and a staple The staple is attached using a hinge to the other end of the strap that has an opening inside Latches can also be made from other materials such as plastics and rubbers however metals are commonly used due to their shapeability and machinability They also have strength Door latches are usually made from metals however there are exceptions Some latches for example are made from plastic to reduce the weight or to meet other design specifications Other latches have specialized uses such as latches designed to be activated using handles or levers This allows emergency exits from buildings and other areas There are two primary types of door latches namely knobs and levers Knobs are generally used on older doors while levers are more common in newer designs Some latches are reversible meaning that they can be opened from either side which is particularly beneficial for doors that are inside and there are no windows A the pawl latch is a straightforward version of a cam latch which can be locked by a quarterturn or unlocked with reverse quarterturn hook lock van s commonly used in electronic enclosures trailers buses trucks and RVs