I'm working on Auto CAD 2008. I need to vary the size of metric fastener in the tool pallet from the standards sizes given. Is it possible to do this if yes can anybody please let me know. Also let me know if the varies size matrix fastener can be save as another standard template in the tool pallet.

 

If the question above isn't clear below is the example of what I’m trying to do.

 

From the tool pallet i have selected hex socket head bolt (from Metric samples). From the standard hex socket bolt we have the different sizes varying from M3 to M14. However when i select M8 bolt, its length can be varied from 160 to 40 mm only. But most of my works involves bolts with length less than 40 mm. So I would like to know if we can edit the standard sizes and save them as different templates or any other methods to get the different sized bolt from the tool pallets