DOI: 10.22184/2499-9407.2026.42.1.74.78
The measure of influence of key technological factors on the accuracy of the mean diameter when cutting threads with screw-­cutting heads with round combs has been considered. The relationship between the tolerances on the forming elements of the cutting part of the threaded tool profile and the thread pitch has been established. The portion of the functional standard tolerance for the mean diameter attributable to thread pitch variation caused by uneven angular spacing of the combs has been determined; the need to standardize the maximum allowed error of the pitch in technical specifications has been justified, which makes it possible to create a certain reserve of accuracy (performance), assessed by a technological indicator, through the expansion of the operational component of the standard tolerance.