1/4-14 x 7/8 Unslotted Indented Hexwasher Self Drill Screw Full Thread Zinc & Bake MST188 while the serrated point helps

while the serrated point helps to prevent the screw from slipping

The 7/16-14 x 1 1/8 Hex Cap Screw Grade 8 Yellow Zinc is a high-strength fastener designed for demanding applications

The bolt is also Grade 5

10-24 x 2 1/2 Phillips Truss Full Contour Machine Screw Fully Threaded Zinc is a type of screw that is used in a variety of applications

The self-drilling point allows for easy installation without the need for pre-drilling

1/4-14 x 7/8 Unslotted Indented Hexwasher Self Drill Screw Full Thread Zinc & Bake MST188 while the serrated point helpsThis 1 4 14 x 7 8 inch unslotted indented hex washer self drill screw is made of steel with a zinc and bake finish. It has a full thread and is designed for use in metal applications. The self drilling tip eliminates the need for pre drilling, making installation quick and easy. The indented hex washer head provides a secure hold and prevents the screw from slipping. This screw is ideal for a variety of applications, including attaching metal roofing