Countersunk Hole Sheet Metal

Get a fast and efficient way to switch get a fast and efficient way to switch from screw driving to hole drilling and back with the dewalt steel countersink set.

Countersunk hole sheet metal.

These were created with a dimple die punch which could create a countersunk hole through multiple sheets of aluminum. After drilling a hole in the table for the screw you will be using and the matching hole in the sheet metal use this punch to make a depression in the sheet metal so the screw head sits below the surface of the sheet metal. Note that no metal was removed to create the countersunk hole other than the hole itself. Depending on part configuration material type and thickness countersink size etc we can employ two methods of adding countersinks to parts.

There is another production method that can be employed which is to form the countersink shape in a cnc punch press or fly press. Many of the parts we produce include countersinking. When placing an order or requesting a quote please specify the required dimensions based on the diagrams shown on the right side of the picture for each style. Sheet metal countersink chart choose from a variety of standard countersink options which can either be formed or machined into sheet part parts.

Countersinking is commonly used for holes that need to accept a flat head screw or fastener. In this video i go over punching countersunk holes in sheet metal with a unipunch. A countersink screw has a taper that is largest at the head and reduces in size until it reaches the threaded shaft of the screw. This month we will discuss another common issues that we encounter on sheet metal part prints.

No c sink needed no metal removed from the sheet metal and more strength at the area of the screw head. We offer 3 different styles of countersinking which is shown below. These countersinks have always been drilled in with standard pillar drills or counter bits. Machined countersinks are created with a drill press and formed countersinks are made with punch press tooling the best option depends on your project and part geometry.

By just tightening the rapid load holder sold separately into your drill or drill driver you can quickly insert or eject hex shank drill bits and screw driving tips as necessary. Sheet metal fabrications often need to have countersunk holes ready to take countersunk screws when being screwed together.