316 Stainless Steel Machine Nuts
Hex Machine Screw Nut: Designed to be used specifically with machine screws. Stainless nuts are used with stainless machine screws where parts are subject to corrosive conditions. Square Machine Screw Nut: Offers a greater bearing surface for wrenching
Hex nuts are to be used with machine bolts to adhere facing materials to prevent tension and shear movement. Specifically in wood to wood, wood to metal, or metal to metal applications.
316Stainless mean you can trust the quality and have corrosion resistance. Be sure to pre-drill any holes and to use washers and bolts that are a similar grade and finish.