12-24X1 5/8 Phil Flat Full Thread Self Drill Machine Screw Thread #4 Pt Zinc 1000hr Salt Spray (Pack Qty 1,500) BC-1226KPFMS4HC

Designed to drill through a greater thickness of steel than a standard self drilling screw. Although it can assist in attaching metal deck to structural steel, the #4 & #5 point self drilling screws are not structural bolts and should not be used as such 410 Stainless: Will drill through thicker sheets of stainless than a #2 or #3 drill point. In the absence of industry test results, each user should carefully test to see if parts will work in desired application. The hardness of the material to be drille