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Types of Door Latches Latches are available in various materials, finishes, and thicknesses in accordance with the engineering requirements. Engineers can choose a galvanized lock to prevent corrosion and ensure durability in harsh environments. Other specifications include the degree of security required for an application. For example, a hook lock latch is more secure than a hasp and might require the use a padlock. Hook and Eye Latch The hook and eye latch is an