hardwood floor and speaker

Yes, carriage bolts, that's it.
Also, if you like one of the Herbie solutions, there is one that allows you to slide your speakers if need be. I bought the wafers that go under my brass pucks and they stick like glue to the floor once the stands/speakers are on them, they do not budge...if you go that route make sure you know where you want your speakers.

When I removed the carpet from my listening room a few years ago I used the carriage bolts with pads as P_Nelson suggests. Inexpensive and effective.

http://www.audiophilia.com/hardware/ma10.htm

Try these, I too have wooden floors and these great.

Jonathan.

I use pennies under the spikes to protect my wood floor, as suggested by George Short of North Creek, the designer/manufacturer of my speakers. 8 cents, out the door. John

I got a chuckle out of this one!