8-32 x 1 1/4 Slot Ind Hex Wash Taptite Alternative Thread Roll Screw Fully Thrd Zinc & Wax HPG It has a serrated surface

It has a serrated surface that helps to prevent the bolt or screw from loosening

* Available in a variety of finishes

7 x 40 ISO14581 Metric 6-Lobe Flat Machine Screw Full Thd Class8

3/8" Medium Split Lock Washers are designed to prevent nuts and bolts from loosening due to vibration or movement

The screw is ideal for use in metal

8-32 x 1 1/4 Slot Ind Hex Wash Taptite Alternative Thread Roll Screw Fully Thrd Zinc & Wax HPG It has a serrated surface8 32 x 1 1 4 Slot Ind Hex Wash Taptite Alternative Thread Roll Screw Fully Thrd Zinc & Wax are designed for use in a variety of applications, including metal, plastic, and wood. They are made of steel and have a zinc and wax coating for corrosion resistance. The screws have a slotted hex head and a fully threaded body. They are self tapping, which means they create their own threads as they are driven into the material. This makes them easy to install