This is certainly the traditional, straight-line slot that a flat-blade screwdriver fits into. Although not as preferred because they used to be, slotted screws are still utilised for his or her simplicity and universal accessibility. These screws Possess a head form that is definitely hexagonal and protrudes within the floor. https://types-of-house-foundation18495.blogdomago.com/28714063/the-single-best-strategy-to-use-for-kinds-of-screw-heads