#9 x 3-1/8" Climatek Star Drive R4 Structural Wood Screws - 425 Pack Household Items -314 and -323)

-314 and -323)

5 through 5

composition board

Adds protection to items being stored or delivered

#9 x 3-1/8" Climatek Star Drive R4 Structural Wood Screws - 425 Pack Household Items -314 and -323)For interior exterior use in wood, plastic, cement fibre board, particle board, sheet metal, wood decking and melamine, GRK's R4 self countersinking screw has a patented underhead with saw blade like cutting teeth and six self contained cutting pockets. Together they act similar to a circular saw blade, transporting the drill dust away from the edge of the screw hole while cutting a perfectly clean hole into even the most brittle materials without