Pack of 1 Cleveland 2175T Cobalt Steel Jobbers Length Drill Bit 17/32 Pack of 1 Round Shank Greenfield Industries 135 Degree Notch Point TiN Coated 17/32,17/32 Pack of 1 Round Shank Greenfield Industries 135 Degree Notch Point TiN Coated 17/32 Pack of 1 Cleveland 2175T Cobalt Steel Jobbers Length Drill Bit,Cleveland 2175T Cobalt Steel Jobbers' Length Drill Bit, TiN Coated, Round Shank, 135 Degree Notch Point, 17/32" (Pack of 1): Industrial & Scientific,Visit our online shop,Best department store online,Best Price Guarantee Plus Free Shipping. Drill Bit 17/32 Pack of 1 Round Shank Greenfield Industries 135 Degree Notch Point TiN Coated 17/32 Pack of 1 Cleveland 2175T Cobalt Steel Jobbers Length bluntlymatching.com.
Cleveland 2175T Cobalt Steel Jobbers' Length Drill Bit, TiN Coated, Round Shank, 135 Degree Notch Point, 17/32' (Pack of 1): Industrial & Scientific. Cleveland 2175T Cobalt Steel Jobbers' Length Drill Bit, TiN Coated, Round Shank, 135 Degree Notch Point, 17/32" (Pack of 1): Industrial & Scientific. 135-degree angle, notched-point provides ease of penetration when starting holes and prevent walking 。 High-speed steel (HSS) containing cobalt is a good combination of toughness and hardness, for use on drilling through hard substances 。 Screw machine length, for better rigidity and increased strength 。 Titanium nitride (TiN) is a coating to extend cutting tool life and permit faster cutting speeds than with uncoated tools 。 Round shanks, for use on a variety of tool-holding systems 。 Made in the USA 。 The 2175T Q-Cobalt wide land parabolic flute design, screw machine length, high-speed steel (HSS) containing cobalt drill bit has a 38-degree helix angle, with a 135-degree notched-point drill point and Titanium nitride (TiN) surface treatment, which is designed for high performance drilling applications. The shank diameter is the same as the drill size. 。 The 2175T series performs best when drilling into stainless steel, tool steel, low/med/high carbon steel, cast iron, aluminum, brass, plastic, and nickel alloys. TiN is a ceramic coating that combines hardness and low friction to extend cutting tool life and permits faster cutting speeds than with uncoated tools. Spiral flutes act as a passageway for chip extraction from the hole and for coolant to enter the hole. The twist of the flutes brings chips up and away from the cutting edge. The parabolic design allows for smooth and efficient chip, also called swarf evacuation. The higher, also called faster helix provides greater lifting power for chips and works well in deeper holes. 135-degree notched-point drill point works well for hard and tough materials. The lip clearance is very shallow to provide support for the cutting edges. The shorter cutting edge reduces friction and heat during drilling, increasing tool life. The notched point can withstand higher thrust loads and has same benefits as a split-point design. Round shanks allow use with a wide variety of tool holding systems. The screw machine length, also called short or stub length has shorter flute and overall length for more rigidity and accuracy. Designed to reduce deflection and breakage than longer length drill bits. The wider land increases the torsional strength of the drill. 。 Made of cobalt-powder-metal substrate which is many times harder and 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 and DIN industry standards, which help ensure that drill bits around the world, conform to the same specifications. 。 The tolerances for various aspects of the drill bits are: drill diameter range (inches) through 1/8 +0.0000/-0.0005, over 1/8 through 1/4 +0.0000/-0.0007, over 1/4 through 1/2 +0.0000/-0.0010, over 1/2 through 1 +0.0000/-0.0012, over 1 through 2 +0.0000/-0.0015, over 2 through 3 1/2 +0.0000/-0.0020; drill overall length and flute length #80 through 1/8 +0.1250/-0.0626, over 1/8 through 1/2 +0.1250/-0.1250, over 1/2 through 1 +0.2500/-0.1250, over 1 through 2 +0.2500/-0.2500, over 2 through 3 1/2 +0.3750/-0.3750; drill point angle diameter range (inches) 1/16 through 1/2 included angle (degrees) 118 or 135 +/-5 degrees, over 1/2 through 1 1/2 included angle (degrees) 118 +/-3 degrees, over 1 1/2 through 3 1/2 includes angle (degrees) 118 +/- 2 degrees; drill lip height diameter range (inches) 1/16 through 1/8 total indicator variation (inches) 0.0020, over 1/8 through 1/4 total indicator variation (inches) 0.0030, over 1/4 through 1/2 total indicator variation (inches) 0.0040, over 1/2 through 1 total indicator variation (inches) 0.0050, over 1 through 3 1/2 total indicator variation (inches) 0.0060. 。 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 can be used in hand-operated drills, standalone drill presses, or a lathe. 。 Greenfield Industries, which are a part of Top-Eastern Group, is one of the largest manufacturers of twist drills. They also manufacture cutting tools and related products under the following brands: , Chicago-Latrobe, Cle-Line, Vermont Tap & Die, Bassett, Putnam Tools, Geo Met RJC, H & G, Vers-O-Tool, and Acme-Fette. The company has locations around the world, and provides tools adhering to ANSI, NAS, and DIN standards.。 。 。 。
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