| http://www.w3.org/ns/prov#value | - No. 697,014 1 Claim. (Cl. 151-23) This invention relates generally to inserts which are made in the form of a cylinder with internal and external threads, and which are inserted in holes in machine parts made of aluminum, magnesium, plastic, or other relatively soft material to provide strong threaded connection for steel bolts or screws.
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