1/4-14 x 2 1/4 Unslotted Indented Hexwasher Self Drill Screw Full Thread Zinc & Bake MSP188 and the 9/16” AF size

and the 9/16” AF size is perfect for use with most standard wrenches

They feature a small pattern hex shape

which means that it can be used to create a strong hold in a variety of materials

The K lock design creates a positive lock between the nut and bolt

1/4-14 x 2 1/4 Unslotted Indented Hexwasher Self Drill Screw Full Thread Zinc & Bake MSP188 and the 9/16” AF size1 4 14 x 2 1 4 Unslotted Indented Hexwasher Self Drill Screw Full Thread Zinc & Bake is a versatile and durable screw designed for a wide range of applications. It features a self drilling tip that eliminates the need for pre drilling, making installation quick and easy. The indented hex washer head provides a secure grip for driving and prevents stripping. The full thread design ensures maximum holding power, while the zinc and bake coating provides