Handheld tool structure

A handheld tool structure, comprising:

• a tool member, made of a metal material, and having a substantially slab-shaped end, at least one penetrating hole, and at least one notch disposed proximate to both lateral edges of the penetrating hole;
• a handle, substantially barrel-shaped, and made of a metal material, and having an opening disposed at an end of the handle;
• a connecting peg, made of a thermoplastic material, and the thermoplastic material having a high plasticity when heated to a specific temperature and resuming a fixed solid shape when cooled to room temperature, and the connecting peg having a slender groove disposed at an end of the connecting peg;
• and
• a cover, having a slender slot disposed at the top of the cover;
• such that an end of the tool member is passed through the slot, and inserted into the groove, and coupled with the cover and the connecting peg, and another end of the connecting peg is plugged into the handle from an opening at an end of the handle, and the cover is plugged into the handle for installing the connecting peg and the cover together into the handle in a packing way, and the top of the cover is aligned evenly with a distal surface of the handle, and when the handheld tool is assembled, a portion of the handle corresponding to the connecting peg is heated, such that contact positions of the connecting peg with the handle and the tool member with the cover are deformed to allow a portion of the connecting peg to be squeezed partially into each notch and each penetrating hole of the tool member, and the heated and deformed portion of the connecting peg is shaped when cooled.