スタンドオフ取付け用キット

This a good basic selection. Of course there's going to be parts you might never need, but that's the price you pay for having the parts you do need at hand when you need them. The partitions in the box can be arranged so you can store other 3mm parts like washers, lock nuts, and those knurled thumb nuts from PCBgrip I like so much. My set arrived pretty much jumbled up. Odd how a 20mm standoff can make its way across compartments in a sealed box. What I think happens is so many of the steel nuts and bolts get into the bottom of the nylon standoff compartment that they force the lighter part up and out. Maybe should put the nuts and bolts in bags.

The Standoff Mounting Kit well worth the cost, however, some had poor cut threads.