Simpson Strong-Tie SDS25412 Strong-Drive® SDS HEAVY-DUTY CONNECTOR Screw — 1/4 in. x 4-1/2 in. DB Coating (800-Qty) Length:4-1/2 In. Standoff Feature: With a 1-inch

Standoff Feature: With a 1-inch standoff from the concrete

All tools are curated to withstand daily HVAC demands

Size: 1/2" x 20 - Ideal for National Fine Thread applications

Long-lasting performance with high-speed steel construction

Simpson Strong-Tie SDS25412 Strong-Drive® SDS HEAVY-DUTY CONNECTOR Screw — 1/4 in. x 4-1/2 in. DB Coating (800-Qty) Length:4-1/2 In. Standoff Feature: With a 1-inchSimpson Strong Tie SDS25412 The Simpson Strong Tie Strong Drive SDS Heavy Duty Connector screw is a 1 4 in. diameter high strength structural screw ideal for various connector installations as well as wood to wood and engineered wood applications. It installs with no predrilling and has been extensively tested in various applications. The SDS is improved with an easy driving Type 17 point and a corrosion resistant double barrier coating.