5/16-18 x 2 3/4 MS16997, Military Socket Head Cap Screw Cadmium Yellow DFAR 1WB This makes the screw easier

This makes the screw easier to drive into materials

while the un-slotted indented hex head allows for easy driving with a hex key

These screws are designed for use in wood and plastic applications

This 1/4-14 x 1 1/2 Unslotted Indent Hex Washer Self Drill Screw is made of 18-8 stainless steel

The screws are 10-13 inches long and 3 inches in diameter

5/16-18 x 2 3/4 MS16997, Military Socket Head Cap Screw Cadmium Yellow DFAR 1WB This makes the screw easier5 16 18 x 2 3 4 MS16997, Military Socket Head Cap Screw Cadmium Yellow DFAR Size: 5 16 18 x 2 3 4 inches Material: Steel Finish: Cadmium Yellow Head style: Socket head Drive type: Hex Meets military specification MS16997 DFAR compliant Used in a variety of applications, including aerospace, automotive, and military