A cutting tool body includes a first member and a second member, both having a substantially cylindrical shape, and arranged such that a tool body central axis coincides with a central axis of each of the first and the second members. The first member has a tool characteristic of a first magnitude and the second member has the tool characteristic of a second magnitude, different from the first magnitude. The cutting tool body includes a transition member arranged between the first and second members and connected at a first end to the first member and at a second end to the second member. The tool characteristic in the transition member is of the first magnitude at the first end and of the second magnitude at the second end. The transition member has a transition region between the first and the second ends in which the tool characteristic transforms from the first magnitude to the second magnitude.

The invention relates to a thread milling cutter for manufacturing an internal thread, wherein the thread milling cutter has at least one section with multiple teeth, wherein a pitch is arranged between every two adjacent teeth, wherein the predominant number of pitches corresponds to a desired pitch and there is at least one pitch that deviates from the desired pitch.

The invention further relates to a method for manufacturing an external thread on a component or an internal thread in a component, wherein, in one step, a thread milling cutter according to the invention is advanced into the wall of the component and in another step, the thread milling cutter is moved along the extent of the wall once and in this way is moved in the axial direction by one lead of a thread turn.

A cutting tool body includes a first member and a second member, both having a substantially cylindrical shape, and arranged such that a tool body central axis coincides with a central axis of each of the first and the second members. The first member has a tool characteristic of a first magnitude and the second member has the tool characteristic of a second magnitude, different from the first magnitude. The cutting tool body includes a transition member arranged between the first and second members and connected at a first end to the first member and at a second end to the second member. The tool characteristic in the transition member is of the first magnitude at the first end and of the second magnitude at the second end. The transition member has a transition region between the first and the second ends in which the tool characteristic transforms from the first magnitude to the second magnitude.

A split thread die device is disclosed. The device is comprised of a first half and a second half that can be secured to each other around a damaged area of threads of a fastener. The device can then be turned to re-thread the damaged threads. In addition, a top surface of each half is comprised of an opening that extends to the inside surface of each half. The opening allows a cutting lubricant to easily flow from the top surface of each half and onto the threads of the fastener contacting the inside surfaces.

Disclosed is a disassembleable threading die comprised of two half-threading dies held together by two bolts. The threading die can be disassembled and reassembled at any points along the length of a bolt onto which the threading die is screwed.

A die stock comprising a holder, which is symmetrical to a centric holder longitudinal axis, wherein the holder has a plurality of receiving grooves each of which is configured for receiving a cutting insert and a clamping wedge, each of the receiving grooves extending from a first end face of the holder in the axial direction, the first end face running transversely to the axial direction, and wherein each of the receiving grooves extends from an inner side of the holder in a radial direction, the inner side facing toward the holder longitudinal axis. The die stock further comprises a plurality of cutting inserts, wherein each cutting insert has, on a front side that faces substantially toward the holder longitudinal axis, at least one cutting edge. The die stock further comprises a plurality of clamping wedges arranged detachably in the receiving grooves.