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In machining, a counterbore (symbol: ⌴) is a cylindrical flat-bottomed hole that enlarges another coaxial hole, or the tool used to create that feature. A counterbore hole is typically used when a fastener, such as a socket head cap screw or fillister head screw, is required to sit flush with or below the level of a workpiece's surface.
7 paź 2022 · Usually the smaller diameter (pilot) hole is the first dimension given for a counterbored hole, and this is the same for a hole with a spotface (i.e. the M20 hole dimension comes before the 50 mm diameter spotface dimension above).
31 paź 2022 · Unsure on what size counterbore hole to use for your ANSI Metric socket cap head fasteners? Then look no further! This short post will give you the exact dimensions you need for your screws and bolts.
21 maj 2024 · A counterbore hole is a flat, cylindrical recess machined coaxially around an existing screw or fastener hole. The primary purpose of a counterbore is to provide a convenient, non-intrusive space for the fastener’s head.
16 lut 2021 · A counterbore is a circular hole with a flat bottom which coincides with another hole. The counterbored section allows a bolt head or other fastener to be recessed. What does a counterbore look like?
30 gru 2023 · A counterbore creates a cylindrical flat-bottomed hole, enlarging an existing hole to accommodate a fastener head. This process ensures that the head of a bolt or screw sits flush with the surface of the material, providing a larger surface area for the fastener and a cleaner finish.
Counterbores are cylindrical flat-bottomed holes that enlarge another coaxial hole. A counterbore can also refer to the tool used to create these holes (given the term counterbore cutter).
