Machine Screws - Slotted Pan - Metric - Self Colour

A machine screw is a type of screw that is commonly used in industrial and manufacturing applications to secure components within engines, electronic products and general machinery.

This type of machine screw has a raised head with a slotted recess that can be installed with a flat-bladed screwdriver or bit. They are available in zinc plated, brass or stainless steel.

Unlike the domed head of the pozidrive version, slotted pan head machine screws have a head that is flat on top, resembling an upturned frying pan. For a similar type of screw that has a slightly smaller diameter but with a thicker, deeper head take a look at our cheese head slotted machine screws.

About Self Colour Metric Thread

The most common thread type in production today. Usually specified as M then a number x another number. This signifies the thread diameter and the length of the fastener.

For example, M4 x 30 means that the major thread diameter (the external distance across the outside of the thread) is 4mm and the length is 30mm. Length is usually measured from the underside of the fastener head.

Steel products described as having a self colour finish are best suited to internal applications, as they have no additional protection against corrosion. The shade of a self colour finish can vary from bright metal to black, and it will change over time with oxidisation.

If you plan to use self colour finishes outdoors you should paint them to give them a protective coating.


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