RS PRO M4 x 12mm Zinc Plated Steel Pan Head Sems Screw, External Tooth Washer

RS Pro pan head sems screw made of stainless steel with bright zinc plating for corrosion resistance. This sems screw consists of a pan headed pozidriv screw with integral captive washer for easy and quick installation.

External shake proof washer

Not surprisingly, thanks to high-quality and friendly installation SEMS Screws have their place in:

• Avionic communication systems


• Flight control systems


• Infra-red systems and cameras


• Naval & ground fire control systems


• Battery packs


• PCB (Printed Circuit Board) assembly


• Drone sub-assemblies


• Connector assembly

RS PRO is our family brand to go-to and brings you a wide range for high-quality and high-value products to support your project. Trusted by engineers all over the world, every part of every RS PRO product is always rigorously tested against demanding industry standards. We are only giving the RS PRO seal of approval if we are confident of their exceptional quality, which means you can be convinced too.

All these are metric coarse thread. The fine thread pitch would normally start at M8 diameter.
Thread pitch as follows.
M3 x 0.5mm pitch.
M4 x 0.7mm pitch.
M5 x 0.8mm pitch.
M6 x 1.0mm pitch.