5/16" x 6-1/4" Simpson SDS-Plus Concrete Drill Bit - Carbide Tip, Pkg 25 Hex Head 410 Stainless Steel Masonry Screws Lumber Size: Intended for use

Lumber Size: Intended for use with 4-5/8x beams and 4x posts/columns

5/16" hex head (replacement driver bit — BITHEXR516-R1)

This product is intended for use with 4x posts or columns but can accommodate several post sizes for both nominal and rough cut lumber

FHSD screws eliminate the need for predrilling and deliver strong

Available in a range of diameters

5/16" x 6-1/4" Simpson SDS-Plus Concrete Drill Bit - Carbide Tip, Pkg 25 Hex Head 410 Stainless Steel Masonry Screws Lumber Size: Intended for useStrong Tie SDS Plus masonry drill bits feature a durable carbide tip and are designed for use in concrete, brick and block applications.