Stainless Steel #9 Hex Head Sharp Point Wood Screw
Hex Flange / Head Sharp Point #9 304 Stainless Steel Screw
Available by the pound or boxes of 1000. 1.5", 2" and 2.5".
Extra-sharp point for quick penetration through aluminum, steel or copper without “point walking”. Features a 1/4' hex head with a flange, avoiding the need for washers.
Large, flat head provides extra bearing surface to firmly secure roofing material
Longer lengths ideal for installing curved Spanish roof tiles and thicker slate
#9 Wood screw
1/4" Hex drive
304 Stainless Steel is compatible with copper, zinc, aluminum, galvalume & steel
Available in 1.5", 2" and 2.5" Sold by the box or by the pound
General sheet metal to wood screw
Installing downspout straps to wood siding
Great for installing gutter hangers into fascia or rafter tails
Choosing the right type of fastener can be confusing as some metals don't work well together. They can attack other metals which will cause at best discoloration and at worst structural failure.
And it is not just differing metals touching each other that can cause issues. Mere proximity must be considered.
Rainwater runoff from a reactive metal to another can wreak havoc. It is therefore very important to keep galvanic reaction potential in mind when planning the design of your building.