307/308 series are used in hard cutting material, which have thicker, shallower but sharper external threaded. Such insert has three holes which have the function of cutting. The difference between 307and 308 is the insert length and 307H/308H is the same with 307/308 series but with flange.
◆ Provide high strength internal threaded in the soft material for times of maintenance or dismounting.
◆ Can repair the broken internal threaded in the base material effectively.
◆ Can be used after casting, thermosetting or other technological procession, which can simplify the structure of products and increase the production.
◆ Can burden high load, so smaller inserts can be used to make the product structure design more compact.
Such kind of insert can be used on material with low hardness and tensile strength, such as light alloys (Aluminum, Magnesium, Zinc and the alloys), cast irons, bronze/brass, thermosetting plastic, laminated board and wood. The Inserts can easily tap into the soft base materials to provide a high strength internal thread or to repair the broken thread.
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