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Types of Door Latches Latches are made of various materials in various thicknesses, finishes, and finishes to meet specific engineering specifications. Engineers can choose an electro-galvanized lock to avoid corrosion and ensure long-lasting durability in harsh environments. Other specifications include the degree of security required for the application. For example hook lock latches is more secure than a hasp and may require the use of a padlock. Hook and Eye Latch The hook