Not a direct way but you can suppress all other components and then create a BOM for fasteners. Use advance component selection in assembly and select all toolbox part. Then right click on screen and select "invert selection". This would select all component expect toolbox part. Then you can again right click and suppress them, leaving you with toolbox parts only. Now make the BOM.
For a similar need, I've raised the idea for Fasteners only BOM.
Thank you very much Deepak.
I am going to try tomorrow at work.
The method works as I've been using it recently
Another method to consider:
Place a complete BOM on drawing
Add column with Custom Property "IsFastener"
Sort BOM by the IsFastener column
Hide all rows that are not fasteners
Save this format as a BOM Template for future use.