1/4 X 20 3/8" Stainless Cap Screw Set
This is a set of four 1/4" X 20 thread, 3/8" long stainless cap screws with hex heads. These screws are perfect for attaching a camera or housing to a standard shelf bracket, angle steel or whatever custom mount you want for your camera.
The hex head requires a 5/16" or 4mm hex (Allen) wrench.
Add some washers and lock washers too.