WebDec 24, 2024 · The purpose of the requirement for a counterbore is usually to sink the head of the fastener so that the top face of the fastener head is at the same height or slightly below the face of the part. So considering only the local area around the counterbore as the measurement zero reference (i.e. using a caliper) should be good enough. WebSep 7, 2024 · A spotface is a very shallow flat-bottomed cylindrical hole that is larger than and coaxial to another cylindrical hole. Its purpose is to provide a flat mounting surface for mating parts, such as washers or pan head screws. Though a spotface and a counterbore are very similar, a spotface only provides a flat mounting surface, where a ...
Drill Bit/Countersink/Counterbore Units - Lee Valley …
WebThe counterbore tool typically has two cutting radii – one to create the pre-drilled hole, and the other for creating the recessed cavity in the workpiece. By using a counterbore, … WebDec 16, 2024 · A counterbore hole serves the purpose of recessing and thereby concealing fastener heads that have flat, perpendicular lower faces. The Other Main Types of Holes in Engineering. While there are many conflicting and overlapping definitions of hole types listed among engineering handbooks, guides, websites, and discussion groups, the … cloudapp screenshot
To Counter Bore or Not?? - TruckersReport.com
WebThe purpose of a countersink is to allow a fastener, typically a flathead screw, to sit slightly below the surface of the part. A countersink consists of a conical hole that is coaxial to a … WebCounterbores are used for a single purpose. What is difference between countersink and counterbore? The key difference between countersink and counterbore screws are the … WebDec 16, 2024 · Each type serves its own purpose and should be selected carefully to create the most accurate and functional machined parts. ... The main difference between a counterbore hole and a spotface hole is the … by the grace of the gods ch 1