Types of threaded fasteners screws and bolts - Equipment, Tools & Supplies - Electronic Component and Engineering Solution Forum - TechForum │ Digi-Key

This post will be a visual aid for some of the different types of screws and bolts focusing on different heads, drive types, and bearing surfaces. The “bearing surface” or underside of the head, is where the fastener head makes contact with the device. To increase the tensile strength; some bolts, screws, are partially threaded with a shoulder below the head. Here is a breakdown of the different types. Bolts – are a type of fastener made with external threads that pass through a hole and fast

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