有頭螺絲，3/8-16 x 7"，六角頭

Used this in a jig I’m building for drilling heavy steel plates, and the hex head made tightening into tight spots a breeze. The 3/8-16 threads gripped solid right from the start, and the full 7-inch length gave me plenty of reach. Feels tougher than the standard bolts I’ve grabbed at the hardware s

The threads are cut clean and the Grade 8 steel feels rock solid under torque, no wobble when I crank it down on the mill table. Installed six of these for a fixture build and every one seated perfectly, plating’s holding up nicely against the coolant splatter too.

Used this cap screw to secure a new jig on my milling machine, and the Grade 8 steel held up perfectly under heavy vibration. The hex head made installation with a standard wrench quick and stable. Exactly the strong, corrosion-resistant fastener I needed.