5/16 x 4" Yellow Zinc Round Washer Head SaberDrive® Lag Screws

Diameter: 5/16"
Length: 4"
Material: Steel
Finish: Yellow Zinc
Head Style: Round Washer (T-30 Star Bit)
Point Type: Type 17
Type: Lag Screw

These interior Construction Lag Screws replace traditional lag screws or carriage bolts. The star drive maximizes torque during installation and eliminates cam-out, while the washer head provides exceptional holding power. The Type 17 point and serrated threads eliminate the need for pre-drilling. SaberDrive® construction lags are stronger than larger diameter carriage bolts, lag bolts, and hex bolts, and install in a fraction of the time with a simple drill or impact driver. Use them wherever you would typically use carriage bolts, lag bolts, or hex bolts for wood to wood connections.