![]() ![]() Although ground taps are produced to precision tolerances under closely controlled manufacturing processes and are guaranteed for accuracy of individual elements, there is always the possibility of the presence of unknown factors which can be a detriment to good tap perfomance.Tap limits are designated as L1, H1, H2, H3 etc. Wake skew angle is an adequate general indicator of the. A tap whould be selected which will produce an internal Thread within the desired product limit. lateral extremities of the wake roll up as does any wake trailed by a finite-span lifting surface. Tap limits refer to the various sizes of tap manufactured. ![]() The acceptability of the male part with an external Thread is also determined by a corresponding "GO" or "LO" Thread Ring gage. Thread geometry - Unified Fine (UNF) All dimensions in mm unless otherwise stated.
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