5/16-12 x 2 Phillips Flat Self Drilling Screw Full Thread Zinc & Bake 3/4 The 5/8-11 x 4 1/4

The 5/8-11 x 4 1/4 Hex Cap Screw Grade 8 Yellow Zinc is a high-strength fastener designed for demanding applications

or plastic without pre-drilling

The 9/16 Internal Tooth Lock Washer Zinc is a versatile and durable washer designed to prevent fasteners from loosening due to vibration or movement

Its flat design ensures a flush fit against surfaces

The fine thread design ensures a secure and precise fit

5/16-12 x 2 Phillips Flat Self Drilling Screw Full Thread Zinc & Bake 3/4 The 5/8-11 x 4 1/4These 5 16 12 x 2 Phillips flat self drilling screws are full thread and zinc plated for corrosion resistance. They have a sharp point that drills its own pilot hole, making them ideal for use in metal, wood, and plastic. The Phillips drive head provides a secure grip for driving, and the flat head sits flush with the surface of the material. These screws are perfect for a variety of applications, including fastening metal roofing and siding,