3/8" x 4-3/4" Pin-Drive Expansion Anchor, Yellow Zinc Plated, Pkg 50 Quik Drive Subfloor/Underlayment Screws Double-Shear Nailing: This design innovation

Double-Shear Nailing: This design innovation distributes the load through two points on each joist nail

and foundation upgrades

(Overhead installation need not be blown clean

Self-locking depth adjustement for consistent dimples

Available in multiple lengths and sizes to meet a range of fastening needs

3/8" x 4-3/4" Pin-Drive Expansion Anchor, Yellow Zinc Plated, Pkg 50 Quik Drive Subfloor/Underlayment Screws Double-Shear Nailing: This design innovationSimpson pin drive expansion anchors are coated in yellow zinc dichromate and used for medium and heavy duty fastening applications into concrete and grout filled block. California Residents: WARNING