What size T-nut clamping set?

I worry that if I tighten the nuts too much I might risk breaking out the table T slot What is the proper way to use one of these kits? Should

Our Clamping Kits are among the best in the world! All the blocks, bolts, nuts and hold-downs are case hardened Each clamping kit includes: studs

the bowery boys slot Designed to save set up time and solve most clamping problems All step clamps are forged and hardened & the step blocks are made from high quality steel for

tombstone no mercy slot 58 PIECE STEEL CLAMPING SET FOR USE ON EQUIPMENT WITH 38 T-SLOTS FIFTY TWO PIECE STEEL CLAMPING SET FOR USE ON EQUIPMENT WITH 38 T-SLOTS COMPRISES 24