Simpson #7 2-1/4 in Self-Drilling Siding Screw 410 Stainless 100-Pack Countersink Bits Installations where a low-profile fastener

Installations where a low-profile fastener is preferred over standard through bolts

The DTT1Z is specifically designed to provide secure deck attachments without requiring access to interior floor joists

the ECC74 is built to perform in demanding structural applications where dependable load transfer is essential

These rigid steel connectors are ideal for supporting load-bearing walls across a wide range of steel construction projects

Simpson #7 2-1/4 in Self-Drilling Siding Screw 410 Stainless 100-Pack Countersink Bits Installations where a low-profile fastenerThe Simpson #7 2 1 4" Self Drilling Siding Screw in Type 410 Stainless Steel is engineered for reliable fastening of wood siding, wood panels, and metal trim to steel studs. Featuring a trim head profile, a #3 drill point for self starting penetration through metal, and a #1 square drive for secure bit engagement, this screw delivers consistent, professional grade performance in demanding construction applications. Supplied in a convenient 100 piece