#4 MORSE TAPER ROUGHING REAMER, T.S.#4 MORSE TAPER ROUGHING REAMER, T.S. 5380004, #4 MORSE TAPER SHANK, HSS 1.289" Large End Diameter, 1.017" Small End Diameter, 5-1/4" Flute Length, 10-7/8" Overall Length, High Speed Steel, #4 Morse Taper Shank. Morse Taper Roughing Reamers are used to start forming tapers in straight holes and do the heavy stock removal prior to using a finishing morse taper reamer. They are also used to remove heavy nicks and burrs from machine spindles with the appropriate morse taper size, but we would recommend a finishing reamer for that application. The taper is approximately 5/8" per foot and we stock these reamers in a finishing style with either a straight shank or taper shank, then this roughing style with a taper shank. Ask your salesperson for details!
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