5# Bucket 9 x 3-1/8" Bronze Robertson® Flat Head (389/Bucket)

• Deep Robertson® Drive Recess reduces cam-out end load. Handles maximum torque with The Original Robertson® Drive. Self countersinking nibs under the head to ensure a clean finish 

• Aggressive knurl enlarges hole to reduce splitting and drag to help draw lumber together. Patented Aster® thread form on threads to cut fibers for easier 
engagement at lower torque

• Type-17 tip for faster precise starts which eliminate “walking”. Provides easier insertion without pre-drilling. Aggressive thread for great withdrawal strength 

• Structural Wood Screw - Backed by certified independent testing (TER 1911-01). International Building Code and International Residential Code Compliant