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while the square neck prevents the bolt from spinning when tightened
It is made from alloy steel and has a black phosphate finish for corrosion resistance
The square drive head ensures a secure grip
this locknut offers a combination of strength
12-24 x 5/8 Phillips Flt Underct Full Thread Self Drill Scr Machine Sc Thread Zinc & Bake WUSS while the square neck preventsThese 12 24 x 5 8 Phillips flat head undercut full thread self drilling screws are made of steel and have a zinc and baked on finish. They are designed for use in metal and have a sharp point that drills its own hole. The undercut head provides a flush finish when countersunk. These screws are available in a variety of lengths and diameters to meet your specific needs.
