Simpson 0.220 x 3" Black, Strong-Drive SDWS TIMBER Screw Double Barrier HDIASTS Setting Tool for Solid Materials Featuring double-shear nailing technology that

Featuring double-shear nailing technology that distributes load through two points on each joist nail

In new construction

Anchoring into existing concrete using Simpson Strong-Tie anchoring adhesives

and how many inserts does it have

Simpson 0.220 x 3" Black, Strong-Drive SDWS TIMBER Screw Double Barrier HDIASTS Setting Tool for Solid Materials Featuring double-shear nailing technology thatThe Simpson Strong Drive SDWS Timber Screw in 0. 220" x 3" with Double Barrier Coating is a high strength structural fastener engineered as a direct, code compliant alternative to traditional lag screws and through bolts in wood framing and heavy timber connections. Featuring a SawTooth point, bold thread design, and a T40 6 lobe drive system, this black coated timber screw delivers fast, reliable installation in a wide range of wood to wood fastening