A multi-functional double-ended socket and magnetic extension bar kit with C-shape retaining rings, comprising a socket body, a magnetic extension bar with a detent ball, an H8-end C-shape retaining ring, and an H10-end C-shape retaining ring;
- wherein
- the socket body is in a hollow cylindrical shape and is made from chrome vanadium steel or S2 alloy steel through a quenching and tempering heat treatment, two axial ends of the socket body are integrally formed with a socket end H8 and a socket end H10, respectively, an internal specification of the socket end H8 is H8, an internal specification of the socket end H10 is H10, and the socket end H8 and the socket end H10 are configured to tighten metallic external hexagon screws, non-metallic external hexagon screws, or external hexagon nuts of different specifications;
- a central internal hexagonal through hole H8 is radially formed in a middle portion of the socket body, a specification of the central internal hexagonal through hole H8 is H8, the central internal hexagonal through hole H8 penetrates through two side walls of the socket body, and the central internal hexagonal through hole H8 is configured to receive an H8-size internal hexagonal driving bar to drive the socket body to rotate;
- and the magnetic extension bar with the detent ball comprises an H1/4 shank, a magnetic head, a detent ball groove, and a driving end detent ball, wherein a tail portion of the H1/4 shank is configured to connect a power tool or a pneumatic tool, to drive the socket body to rotate through the electric tool or the pneumatic tool;
- the magnetic head is made from an NdFeB strong magnet with dimensions of 5×4.5 mm, and the magnetic head is fixedly mounted at an end of the H1/4 shank distal from the tail portion and configured to attract and fix a metallic external hexagon screw or a stainless steel external hexagon screw, to facilitate screw pickup/placement and initial positioning;
- and the detent ball groove is formed in a peripheral surface of a bar body between the H1/4 shank and the magnetic head, and the driving end detent ball is movably embedded in the detent ball groove;
- and
- two H8-end retaining ring grooves are formed in a face of an internal hexagonal edge of the socket end H8, two H10-end retaining ring grooves are formed in a face of an internal hexagonal edge of the socket end H10, a size of each H8-end retaining ring groove matches a size of the H8-end C-shape retaining ring, a size of each H10-end retaining ring groove matches a size of the H10-end C-shape retaining ring, the H8-end C-shape retaining ring is correspondingly snapped in the H8-end retaining ring groove, the H10-end C-shape retaining ring is correspondingly snapped in the H10-end retaining ring groove, and the H8-end C-shape retaining ring and the H10-end C-shape retaining ring are configured to clamp a metallic external hexagon screw, a non-metallic external hexagon screw, or a stainless steel external hexagon screw to prevent the screw from falling off;
- wherein an H8-end yellow-painted groove for specification identification is formed in an outer wall of the socket end H8, an H10-end blue-painted groove for specification identification is formed in an outer wall of the socket end H10, the H8-end yellow-painted groove for specification identification is configured to intuitively identify the specification of the socket end H8, and the H10-end blue-painted groove for specification identification is configured to intuitively identify the specification of the socket end H10.