These bolts I use to attach the Locking slides to the box and drawer since smaller screws are not strong enough with the larger 500lb capacity slides. The bolt and barrel are made from Steel with Nickel Plating.
The Large bolts I recommend for 3/4" thick wood.
The Small bolts I recommend for 1/2" thick wood.
The 8 pack will be enough for 1 pair of slides.
I bolt 2-4 in each drawer depending on the slide length. For longer slides from 40" - 60" I would recommend 2 packs of these bolts for install.