Button Head Inch Socket Screws

Button Head Socket Screws are the fastener of choice in high precision, high strength assemblies requiring a finely tooled appearance.  The rounded “Button” heads possess a broader bearing surface than the standard Socket Head Cap Screw, which allows for solid seating on the mating material.  They have a tall, uniformly domed profile, allowing for good driver engagement. Because of their alloy composition and heat treating that they undergo resulting in extremely high tensile and yield strength, a given size of a Button Head Socket Screw may be comparable in strength to the next larger diameter of a common, low-carbon steel round head machine screw.  This has the unique advantage of potentially fewer screws needed in a particular design to achieve specific clamp loads.  Fewer screws = lighter assemblies and reduced cost.  It is easy to understand the appeal of this versatile, ubiquitous fastener.