7/8 6-FLUTE 60 DEGREE COUNTERSINK7/8 6-FLUTE 60 DEGREE COUNTERSINK 79221, 2-3/4" OAL, 1/2" SHANK 7/8" Diameter, 1/2" Shank Diameter (may vary), 2-3/4" Overall Length, 60-Degree Included Angle, .23" 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.
100% Satisfaction Guarantee: At Mansion Tools, we want to be sure that the item you choose is the right one for you. Within 30 days of delivery of your order, you may return any merchandise purchased from Mansion Tools in its original condition with your email order confirmation or packing slip. Restocking fees may apply. On items over $275 shipping within the US, we will even arrange free pick up or pay for returns shipping.