Robertson Screws Robertson Head Square Driver Stainless Steel Screws

Robertson screws are the screws with Robertson drive or you can call it square drive too. A Robertson, also known as a square or Scrulox screw drive has a square-shaped socket in the screw head and a square protrusion on the tool. Both the tool and the socket have a slight taper. Originally to make the manufacture of the screws practical using cold forming of the heads, this taper provides two other advantages that have served to popularize the drive: it makes inserting the tool easier and tends to help keep the screw on the tooltip without the user needing to hold it there. Robertson screws are commonplace in Canada, though they have been used elsewhere and have become much more common in other countries in recent decades. Robertson screwdrivers are easy to use one-handed because the tapered socket tends to retain the screw, even if it is shaken. They also allow for the use of angled screwdrivers and trim head screws. The socket-headed Robertson screws are self-centering, reduce cam out, stop a power tool when set, and can be removed if painted over or old and rusty. In industry, they speed up production and reduce product damage. Ever Hardware provides custom-made fasteners and customizable packaging.

Stainless steel does not readily corrode, rust or stain with water as ordinary steel does. However, it is not fully stain-proof in low-oxygen, high-salinity, or poor air-circulation environments. There are different grades and surface finishes of stainless steel to suit the environment the alloy must endure. Stainless steel is used where both the properties of steel and corrosion resistance are required.