A direct hair transplanting device enabling sequential harvesting of single hair follicles from a donor region and implantation of the same at a recipient zone of the scalp comprising a tubular housing (30) with a forwardly projecting tubular needle (2) with an outermost end being formed with a conical obliquely cut knife edge cutting surface. A hair follicle is extracted through rotation of the cutting surface of the needle around a selected hair follicle at the target donor region of the scalp and implantation of the same at a selected recipient locus of the scalp being effected through initiating a forward stroke of a push rod (7) slidable within the interior of tubular needle (2) to implant the hair follicle into the scalp. Appropriate regulation and fine adjustment of the depth of intrusion of needle (2) into the scalp is obtained through differentiated depth of screwing of an internally threaded tubular shaft (35) holding the needle around an externally threaded perimeter of a cylindrical member (34) detachably mounted onto the tubular housing (30).