from time to time there is the question on how to add a second nut in IFX. Well, by default this is not possible. But you can use the following workaround.
I will explain it by using the IFX nut ISO4032-6.
Copy the file ISO4032-6.dat and rename it to ISO4032-6_as_washer.dat.
Open the file and change NUTTYPE 1 to WASHERTYPE 21
Change the columns in the file like shown in the image
Finally the file should look like this
Add a new icon for you new nut. Size should be 32x16 pixel.
Now add this new nut to your catalog. I have added it to the mm catalog to a new group 'second_nut'. If you want you can add a icon for this new group. Simply copy the attached 'second_nut_icon.png' to the 'ifx_catalog' folder in your IFX installation.
If you now start Creo, you can use the second nut in the 'Side 2 Washers' area.
Note: The preview show a lock washer. But if you assemble the fastener, your nut will be created.