Designed to work with all backer boards

1/4-28 x 1 3/4 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (100)

1/2-13 x 2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (50)

Flat Head thread cutting screw with machine screw thread with blunt tapered point

0.276 x 3 Simpson Strong-Drive® SDWS TIMBER SS Screw 316 Stainless Steel (T50 6-Lobe) - Box (10) 1 1/4-7 A307A Hex Bolts Plain Steel Designed to work with allIntroducing 0. 276 x 3 Simpson Strong Drive SDWS TIMBER SS screws made of 316 stainless steel with a 6 Lobe design. These durable, corrosion resistant screws are designed for optimal timber connections. With strength ratings up to 3,200 lbs. and a #50 size, they come in a box of 10.