DIN 438 is a set screw with a straight slot and a drilled end. The main difference between the set screw and other types is the absence of a head or cap. At its ends, there are special protrusions or recesses - slots - that strengthen the connection and fixation of structural parts.
Fastening group DIN 438
Set screws with a straight slot and a drilled end DIN 438 are made of stainless steel and belong to the stainless steel fastener group.
Materials for the manufacture of DIN 438 screws
DIN 438 screws are made of stainless steel grade A2. Steel grade A2 or “food grade stainless steel” is one of the most commonly used steel grades. The material is non-toxic and resistant to corrosion, which makes it suitable for use in the food and medical industries. The alloy itself has no magnetic properties, but it can develop them during cold machining of steel.
Applications for DIN 438 screws
The DIN 438 screw is installed in a blind hole and tightened so that the metal of the base is squeezed out by this edge. Thus, due to frictional forces, the metal product stops in the hole. This quality of fastening is used in components subject to alternating and vibration loads, such as gearboxes.
It is widely used in:
- mechanical engineering,
- instrumentation,
- industrial and manufacturing sectors.
