![Thumb Screw -Shoul Type S](http://www.sterlinghardware.com/cdn/shop/products/00142_450_{width}x.jpg?v=1575439628)
Thumb Screw -Shoul Type S
A cold headed, one piece, screw with rolled threads and a flattened head designed for manual turning wihthout a driver or wrench. The shoulder flares to a circular shape of a diameter slightly less than the head diameter of the screw.