Precision Twist R56co Cobalt Steel Reduced Shank Drill Bit, 49/64"

US $84

Boaz, Alabama, United States
Oct 31st

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Precision Twist R56CO Cobalt Steel Reduced Shank Drill Bit, Black and Gold Oxide Finish, 1/2" Reduced Shank, 118 Degree Split Point, 49/64" High-speed steel (HSS) containing cobalt is a good combination of toughness and hardness, for use on drilling through hard substances Combination black oxide and gold finish, improves lubricity, resists corrosion, and will not chip or flake off Half-inch round shank allows larger sized drills to fit into small size chucks Jobber-length drill bits, most common length drill bit, suitable for a wide range of applications 118-degree split-point angles, for general drilling applications The Precision Twist R56CO Jobber-length, combination black (also called steam tempered) and gold oxide, general-purpose, round shank drill bit drills holes into a wide variety of metals and synthetic materials with best performance with steel, stainless steel, cast iron, titanium, nickel, and copper. It can drill to a depth up to four times the diameter of the drill size. Flute length is three inches, overall length is six inches, with a half-inch, reduced shank. The R56CO series has a type N flute form (a regular helix angle of 21 to 34 degrees). The combination black oxide and gold finish improves lubricity, resists corrosion, and will not chip or flake off. Black and gold oxide is an appealing surface treatment which combines the benefits of both black oxide and gold oxide. Black oxide finish gives a strongly adhering blue oxide surface that acts to retain cutting fluid and prevent chip to tool welding, reducing the formation of a built-up edge. Gold oxide is a low temperature heat treatment which reduces grinding stress within the tool, and has an appealing, easy-to-identify gold color. Gold oxide is commonly used to identify cobalt steel tools. Reduced shanks are smaller than the drill diameter, so they can drill holes larger than the typical chuck capacity. These are sometimes called Silver & Deming drills; they used to be made by Silver & Deming in the late 1800s, but now it refers to any reduced shank twist drill bit. Made of HSS with cobalt which is many times harder/stiffer than HSS, will hold an edge longer, and will deflect less than HSS. These are also more resistant to heat than HSS. These qualities allow it to run at higher speeds and feeds. They are made to ANSI (fractional sizing) industry standards, which ensure that drill bits around the world, conform to the same specifications. Drilling, or hole making, is the most common metalworking operation in the world. Twist drill bits are the most common type of drill bit used. Twist drill bits are commonly used to drill holes with hand-operated drills, standalone drill presses, or lathes. The flutes of the drill bit act a passageway for chip extraction from the hole and for coolant to enter the hole. These drill bits have a right-hand twist that brings chips up and away from the cutting edge. Precision manufactures machine tools under the following brands: Precision Twist, Precision Dormer, and Union Butterfield. They have locations around the world, and provide tools adhering to ANSI, NAS, and DIN standards. Seller Notes: I only ship to the connected 48 states. I do not ship to APO's or P.O. Boxes. Please do not ask to ship anywhere else it will not happen. WE ONLY SHIP TO PAYPAL CONFIRMED ADDRESSES!!! If you have a P.O. Box make sure you change your address in paypal before purchasing so that we get the address you want it shipped to. We cannot change ship to address after the fact or Seller Protection is void. Thank you for understanding. ***PLEASE READ BEFORE PURCHASING*** This item was acquired through a bulk load we have purchased of random merchandise. We do not know the history of this item. Please view pictures closely, you are buying as pictured. We have tried to test it to our best ability but are not going to guarantee something is not missing. Items that require bolts may be missing some bolts. Items with small pieces may be missing some small pieces. Items that use electricity may stop working at any time. If this item has a buy it now price it will be on it . If we are accepting offers there will be an option on the listing. If we start it at $.99 on auction it will sell to the highest bidder and does not have a buy it now price. We now list everything as used no matter what the condition . It may look new and be sealed but it is always listed as used unless stated otherwise . If we make a mistake we will try our best to rationally solve the problem . If you have any questions or concerns feel free to send us a message. Check out my other items! Be sure to add me to your favorites list! Have a great day and thanks for checking out our listing!!!