Method and system for producing a threaded bolt

A method for producing a threaded bolt comprising:

• providing a mold having a cavity including a thread portion defining a threaded structure, said cavity extending axially beyond the thread portion and including an axial end face axially spaced from said thread portion;
• providing a blank of plastic material with embedded fibers aligned in a longitudinal direction of a cylindrical portion of said blank, said blank having first and second axial ends, said cylindrical portion having a radial periphery and a core inward of said radial periphery, said plastic material having a melting temperature;
• inserting said blank into said cavity so that the first axial end of the blank is axially spaced from said axial end face;
• forming a threaded structure on a circumferential face of said cylindrical portion, said step of forming a threaded structure comprising:
• heating the radial periphery of said cylindrical portion to a temperature beyond said melting temperature, while a temperature of said core remains below said melting temperature;
• and
• exerting pressure on said blank with a die to deform the blank within the cavity after said step of heating the cylindrical portion, whereby a threaded structure is formed on a circumferential face of said cylindrical portion and said first axial end is deformed to bear on said axial end face;
• forming a head of the threaded bolt after forming said threaded structure, said step of forming a head comprising;
• heating said second axial end of said blank to a temperature greater than a melting point of said plastic material;
• and
• exerting pressure against said second axial end of said blank after said step of heating said second axial end to form a head of the threaded bolt.