Extruded Tapped Hole Sheet Metal

Avoid large sheet metal parts with small bent flanges.

Extruded tapped hole sheet metal.

Extruded holes very close to the part edge can lead to sheet metal deformation or tearing. In low carbon steel sheet metal the minimum radius of a bend should be one half the material thickness or 0 80 mm. Extrusions our commonly used to accept sheet metal screws or permit tapping into a deeper distance than just the material thickness. Tapped holes may need to be re tapped after plating to ensure accuracy.

Therefore the minimum distance between the extruded hole to edge if maintained. Extruded tapped hole u nuts push the workpiece material downward to create a tapped hole. Performance in extruded holes is slightly higher than in drilled holes. Extruded hole to part edge b 3t d 2.

The following illustration shows the extruded hole geometry. The minimum distance from an extruded hole to a bend is three times the material thickness plus the bend radius. First prevailing off torque is an indication of locking torque and resistance to vibrational loosening and is favorably high for extrude tite screws in thin sheet metal. Creating an extruded hole using a punching process requires extreme pressure force.

Design for manufacturability sheet metal guidelines bends for the ease of manufacturing multiple bends on the same plane should occur in the same direction. Avoid large sheet metal parts with small bent flanges. Tap fix screws for extruded holes in light gauge steel this article provides tap fix hole size recommendations for metals using light gauge punched extruded materials. They are used in thin materials.