Detail & Specs
SEMS Single Washer Hex Head Phillips Screw / 4.8 Steel
These SEMS screws have an indented hex head with a recessed phillips drive and a captive (permanently attached) flat washer. Length is measured from underneath the head, including the washer.
Yellow Zinc plated finish provides corrosion resistance, commonly used in European automotive restoration, specifically Porsche, Volkswagen, Mercedes, etc.
The washer on this SEMS screw is free spinning. SEMS screws are common in the electronics industry but can be used in automotive, energy, agriculture, etc. This particular head style is common in Porsche and motorsport restoration applications.
SEMS screws are beneficial for a variety of reasons: saving time by eliminating assembly of individual components, reducing loss of loose parts during assembly and compatibility with automated production equipment.
Also known as Cross Recessed Hexagon Head Bolt with captivated washer, phillips drive hex head SEMS screw.