Countersunk Hole Sheet Metal

These countersinks have always been drilled in with standard pillar drills or counter bits.

Countersunk hole sheet metal.

Sheet metal fabrications often need to have countersunk holes ready to take countersunk screws when being screwed together. Sheet metal countersink chart choose from a variety of standard countersink options which can either be formed or machined into sheet part parts. Many of the parts we produce include countersinking. These were created with a dimple die punch which could create a countersunk hole through multiple sheets of aluminum.

There is another production method that can be employed which is to form the countersink shape in a cnc punch press or fly press. Note that no metal was removed to create the countersunk hole other than the hole itself. Countersinking is commonly used for holes that need to accept a flat head screw or fastener. 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.

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. 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. In this video i go over punching countersunk holes in sheet metal with a unipunch. Depending on part configuration material type and thickness countersink size etc we can employ two methods of adding countersinks to parts.

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. We offer 3 different styles of countersinking which is shown below. This month we will discuss another common issues that we encounter on sheet metal part prints. Countersunk holes made with a large number of flutes and cutting edges to lightly shear off material these tools repair and clean out holes for machining between centers.

No c sink needed no metal removed from the sheet metal and more strength at the area of the screw head. 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.