Self Tapping Screw

A self tapping screw is a threaded fastener that forms its own thread in the material. It is used to join thin metal, plastic, or wood.

A self tapping screw cuts its own thread into a drilled or pilot hole in sheet metal, plastic or timber. It often takes a matching washer under the head to spread the load.

This kind of screw is often made in steel or stainless steel. Steel grades are common for general use. Stainless steel grades resist corrosion.

This is a general guide to checking this kind of part. It says nothing about any supplier's parts.

Ask for a certificate of conformance if you need traceability. Check the thread, head dimensions, and length against your requirement. Inspect for cracks, thread damage, or coating defects on receipt.