
Countersink - Wikipedia
Comparison of countersunk and counterbored holes. In manufacturing, a countersink (symbol: ⌵) is a conical hole cut into a manufactured object, or the cutter used to cut such a hole. A …
What Is a Countersunk Hole, and How Is It Used?
Apr 21, 2025 · Precision machining is crucial when creating countersunk holes, particularly in high-performance industries such as aerospace. One of the challenges is maintaining …
Countersunk Screws | McMaster-Carr
Choose from our selection of countersunk screws, including over 9,500 products in a wide range of styles and sizes. Same and Next Day Delivery.
What Is Countersunk Screw & How To Countersink?
The countersunk screw also known as a flat-head screw is a type of screw that’s designed to rest flush with the object or surface in which it’s inserted. Countersunk screws are simply …
Countersink | GD&T Basics
Sep 7, 2022 · The 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 …
COUNTERSUNK Definition & Meaning - Merriam-Webster
The meaning of COUNTERSINK is to make a countersink on (a hole).
Countersunk vs. Countersink — What’s the Difference?
Mar 18, 2024 · In woodworking or metalworking, 'countersunk' is often used to describe the finished appearance of a project where fasteners are not protruding, whereas 'countersink' is …
What Is a Countersunk Hole and When Is It Used? - Engineer Fix
Nov 4, 2025 · The primary reason for utilizing a countersunk hole is to achieve a flush surface finish after the fastener is installed. When the head of a flat-head screw or a countersunk rivet …
What are Countersink Holes in Engineering? | Xometry
Dec 16, 2022 · Countersunk holes are a type of engineering hole most commonly used for the aesthetic flush fitting of fasteners to render a product surface smoother. This article will …
Countersinks - All About - Machinist Guides
Feb 16, 2021 · What is a countersink? A countersink is an angled taper applied to a hole that allows a fastener (usually a flat head screw or similar) to sit even with, or below the surface …