1/4 6-FLUTE 90 DEGREE COUNTERSINK1/4 6-FLUTE 90 DEGREE COUNTERSINK 79081, 2" OAL, 1/4" SHANK 1/4" Diameter, 1/4" Shank Diameter (may vary), 2" Overall Length, 90-Degree Included Angle, .06" Maximum Flat on Point. Standard six fluted HSS countersinks are designed for economical, general purpose countersinking, chamfering or deburring. Because of multiple flute design, chip loads are generally smaller. Even at maximun speeds, chatter-free machining is possible! Steam homogeneous surface treatment (blackening) is used to prolong life and prevent galling. Comes standard in 60,82 and 90-degree included angles. Also available in 100 and 120-degree. Carbide, carbide tipped and coated also available.
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