Fastenere Stainless Steel Deck Screws -316 Marine Grade #8 x 1-1/4" (100 Pack) Flat Head Square Drive Wood Cutting Point for Exterior, Wood, Decking, Cabinet, Fence, Trailer, Composite Type 17 Point

The screws that come with my invisi-fast decking system were galvanized. I've just discovered that they now offer these screws in stainless steel The connector is polycarbonate, and paired with stainless steel, these under the deck fasteners will last a long time. By not top fastening the decking, it prevents water from penetrating at the fastener and causing premature decking failure due to rot. 316 SS is the best choice for marine environments (like coastal air).

I just installed about 150 of these in a new handrail install. These attached exotic hardwood handrail (Batu) to stainless posts and had zero strip or break. The stainless posts had predrilled and countersunk screw holes, I did not screw through stainless with these. The square head drive on these is a MUST in stainless screws or they will strip out. You also MUST pre-drill and not over drive stainless screws if you don’t want to have install issues. Good value and good product.

I haven't used them yet, but they seem fine, delivered on time in good condition.

Overpriced however they work as intended

Good grade stainless steel screws well made.

Plywood into 1/8 aluminum. Even when pre-drilled, every attempt broke the screw.

Very pleased with the product. Used to screw together PVC board. None stripped or rounded out even using an impact driver. SS can be soft so was a bit gentler on them but performed perfectly

Good product for the price.