The Hillman Group 220343 Grade 8 Hex Cap Screw, 5/8-Inch X 4-Inch, 25-Pack

A Common Feature On A Hex Cap Screw Is A Washer Surface Directly Under The Head Which Creates A Better Seal | An Alternative For Using Them Without Nuts Is To Install Them Directly Into A Compatible Internally Threaded Hole | Grade 8 Screw | From The Brand: Hillman