Countersink Thin Sheet Metal

The die shown at the left allows the punch and die to bottom the countersink shape into the workpiece at the bottom of the stroke due to the nature of this style material will deform and a burr will occur.

Countersink thin sheet metal.

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. They have finishing washers you could use for your purpose instead of having to countersink the thin metal sheet unless you want the screw head flat level with the surface. No c sink needed no metal removed from the sheet metal and more strength at the area of the screw head. 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.

Rocaris 3 piece 1 4 hex 12 16 19mm countersink bore set for wood metal quick change bit pack in metal box. The sheet metal is thin and often thinner than the height of the cs head. A forming countersink tool for the punch press is made to your specifications and produces a clean countersink in seconds. Mar 2 2005 5 038 1 0.

It eliminates the labor intensive drill and deburr operations. And in doing so your screw joint may be weakened. Punch the hole drill the sink deburr. The old way to make a countersink was a three step process.

The machined type of countersink is used in a or b series standard units for countersinking up to 10 gage material. Sheet metal countersink chart choose from a variety of standard countersink options which can either be formed or machined into sheet part parts. Mcmaster carr is the complete source for your plant with over 595 000 products. When countersinking metal sheet you may enlarge the through hole on the bottom of the sheet too much before you get the hole on the top of the sheet large enough for the screw head to sit flush.

Three step processes like this cost unnecessary time and money. 3 7 out of 5 stars 82. 98 of products ordered ship from stock and deliver same or next day. Here is a web address for a chart that will help with variables such as.

Apr 14 2005 13. Hardware diameter countersink angle through hole diameter sheet. Get it as soon as thu sep 3. You may want to leave the head a bit above the surface of the sheet metal.