A contact terminal comprising: a tubular body (Pa) that is made of an electrically conductive material and is tubular; and a central conductor (Pb, Pc) that is made of an electrically conductive material and is in a shape of a stick, wherein the central conductor (Pb, Pc) includes a stick-shaped body (Pb1, Pc1) inserted into the tubular body (Pa), the tubular body (Pa) includes a spring portion (Pe1, Pe2) defined by a helical body configured such that a helical groove (Pg1, Pg2) is formed along a circumference of the tubular body (Pa), and a clasping portion (Pd1, Pd2) that is fitted on a proximal end portion of the stick-shaped body (Pb1, Pc1) to clasp the proximal end portion, the clasping portion (Pd1, Pd2) is defined by a circumferential wall at which portions are separated by a slit (Ph1, Ph2) formed in an end portion of the tubular body (Pa) in a circumferential direction of the tubular body (Pa), the stick-shaped body (Pb1, Pc1) of the central conductor (Pb, Pc) is configured to have an outside diameter less than an inside diameter of the clasping portion (Pd1, Pd2) of the tubular body (Pa), a pressed-in portion (Pb2, Pc2) configured to have an outside diameter greater than the inside diameter of the clasping portion (Pd1, Pd2) of the tubular body (Pa) in a state in which the stick-shaped body (Pb1, Pc1) is not inserted is formed at the proximal end portion of the stick-shaped body (Pb1, Pc1), and wherein in a state in which the stick-shaped body (Pb1, Pc1) is inserted in the tubular body (Pa), the clasping portion (Pd1, Pd2) is spread by the pressed-in portion (Pb2, Pc2) and fixed to a peripheral surface of the pressed-in portion (Pb2, Pc2) by press fit. a tubular body (Pa) that is made of an electrically conductive material and is tubular; and a central conductor (Pb, Pc) that is made of an electrically conductive material and is in a shape of a stick, wherein the central conductor (Pb, Pc) includes a stick-shaped body (Pb1, Pc1) inserted into the tubular body (Pa), the tubular body (Pa) includes a spring portion (Pe1, Pe2) defined by a helical body configured such that a helical groove (Pg1, Pg2) is formed along a circumference of the tubular body (Pa), and a clasping portion (Pd1, Pd2) that is fitted on a proximal end portion of the stick-shaped body (Pb1, Pc1) to clasp the proximal end portion, a spring portion (Pe1, Pe2) defined by a helical body configured such that a helical groove (Pg1, Pg2) is formed along a circumference of the tubular body (Pa), and a clasping portion (Pd1, Pd2) that is fitted on a proximal end portion of the stick-shaped body (Pb1, Pc1) to clasp the proximal end portion, the clasping portion (Pd1, Pd2) is defined by a circumferential wall at which portions are separated by a slit (Ph1, Ph2) formed in an end portion of the tubular body (Pa) in a circumferential direction of the tubular body (Pa), the stick-shaped body (Pb1, Pc1) of the central conductor (Pb, Pc) is configured to have an outside diameter less than an inside diameter of the clasping portion (Pd1, Pd2) of the tubular body (Pa), a pressed-in portion (Pb2, Pc2) configured to have an outside diameter greater than the inside diameter of the clasping portion (Pd1, Pd2) of the tubular body (Pa) in a state in which the stick-shaped body (Pb1, Pc1) is not inserted is formed at the proximal end portion of the stick-shaped body (Pb1, Pc1), and wherein in a state in which the stick-shaped body (Pb1, Pc1) is inserted in the tubular body (Pa), the clasping portion (Pd1, Pd2) is spread by the pressed-in portion (Pb2, Pc2) and fixed to a peripheral surface of the pressed-in portion (Pb2, Pc2) by press fit.