Review on Uxcell Standard Rectangle Aluminum Extrusion Industrial Hardware for Biscuits & Plugs by David Edwards

The mating issue is with the extrusions not the end caps. Two options are available online for the 2040 profiles: One option has two through-holes with a diameter of approx. 4.2 mm over the entire length of the profile, so that they can be fitted with an M5 thread. In another embodiment, the two through holes have a diameter of approximately 5 mm, so that they can be provided with an M6 thread. (To determine which variant you are purchasing, you should look at the dimensions, which are usually listed on the profile section to determine which variant you are purchasing). through holes. (If you look at the online outline view of the end cap, you will see that the tabs are 5.2mm in diameter (i.e. "D5.2"). If you are using the extrusion version with 4.2mm through holes, you will need to do Drill holes up to 5mm diameter (M6 5.00mm tap is best).Drilled holes should only be 1/4" to 3/8" long.