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Plug tap has threads for open or through holes
High-speed steel (HSS) provides hardness for wear resistance
Steam-oxide finish prevents tools from welding
Spiral point tap with plug type and general-purpose style is made of high speed steel material, steam oxide finish, number of flutes 3, size 3/8'', pitch 16, thread NC/UNC, pitch diameter limits H3, standard projection, shank diameter 0. 381'', general machining taps, tolerance 3B, ANSI standards 105. Heavy-duty HSS spiral point taps for use for through holes general machining applications. GTD taps are for use with steel and stainless steel.