12-14 x 2 1/2 Unslotted Hexwasher Serrated Self Drilling Screw Full Thread Zinc & Bake 1/4-28 NE They have a zinc coating

They have a zinc coating for corrosion resistance and feature a hexagonal head for easy driving

The nut is designed to be used with 1/2-20 bolts or screws

The undercut design of the head helps to prevent the screw from stripping out of the material

this bolt meets industry standards for strength and reliability

130 Flat Head Ribbed Threaded Insert Rivet Nut is made of high-quality steel and features a zinc yellow dichromate finish for corrosion resistance

12-14 x 2 1/2 Unslotted Hexwasher Serrated Self Drilling Screw Full Thread Zinc & Bake 1/4-28 NE They have a zinc coatingThese 12 14 x 2 1 2 inch unslotted hex washer serrated self drilling screws are made of zinc and baked for added durability. They have a full thread and are designed for use in metal applications. The serrated design helps to prevent the screws from slipping out of the material, and the hex washer head provides a secure hold. These screws are perfect for a variety of projects, including roofing, siding, and fencing.