Highlights Bolt Dropper hardware is great to have around for use in wood and wet environments. Bolt Dropper hex screws are the highest quality available on the market. They are strong, corrosion-resistant and will support all of your projects. Diameter: 1/4" | Length: 3" | Thread Type: Coarse (standard) | Wrench Size for Hex Head: 7/16" | Quantity: 25 pcs | Material: 18-8 (304) Stainless Steel. Strong, corrosion-resistant hex screws for wood & wet env. Our black wood screws are meticulously constructed using stainless steel. Stainless steel products. Description No More Rust Stains! These Stainless Steel Lag Screws are 304 Stainless Steel which is one of the highest forms of corrosion resistant steel, making it last longer than other hardware on the market today. Deep cut, coarse threads for superior holding and prevent stripping in the material. Bolt Dropper hardware is great to have around for use in wood and wet environments. Bolt Dropper hex screws are the highest quality available on the market and we stand by our claim 100%. They are strong, corrosion-resistant and will support all of your projects.