8-18 x 1/2 Square Drive Modified Truss Head Self Drilling Screw Full Thread Zinc 1/8 PIPE It is used to prevent

It is used to prevent nuts and bolts from loosening due to vibration or other forces

while the round open-end allows for easy insertion and removal

making these screws suitable for both indoor and outdoor use

they provide maximum holding power and can be used in a variety of materials

The flange helps to distribute the load of the nut over a larger area

8-18 x 1/2 Square Drive Modified Truss Head Self Drilling Screw Full Thread Zinc 1/8 PIPE It is used to preventThese modified truss head self drilling screws are designed for use in metal applications. They have a square drive and are full thread, meaning they have threads along the entire length of the screw. The zinc coating provides corrosion resistance. These screws are available in a variety of lengths and diameters to meet your specific needs.