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Nominal diameter 2.6～6

Tapping screws/bolts, also known as self forming screws/bolts, create internal threads while driving. They are commonly used all over the world. Topura as a pioneer invented many shapes and thread types; standard, construction, plastic material fastener, etc. Topura uses several material grades and sizes to produce these types of threads, carbon and SUS410 stainless which currently used for a razor are two types commonly known.

By selecting the correct product and application this will improve productivity and cost is saved. Furthermore, cost can be saved by standardizing specifications and mass-producing.

Automotives, home electrical appliances, constructions, etc.