Chicago Latrobe 69892 2550 Series Cobalt Steel Jobber Length Drill Bit Set Wi...

Description

Chicago Latrobe 69892 2550 Series Cobalt Steel Jobber Length Drill Bit Set With Metal Case, TiN Coated, 135 Degree Split Point, Inch, 21-piece, 1/16" - 3/8" in 1/64" increments
Set of 21 jobber length drill bits includes inch sizes 1/16" through 3/8" in 1/64" increments
Cobalt steel provides extended tool life compared to high-speed steel drill bits when drilling hard materials
Titanium nitride (TiN) coating offers high hardness for increased tool performance and extended tool life compared to an uncoated drill bit on ferrous and nonmetallic materials
Self-centering 135-degree split point penetrates hard material without a pilot hole and produces small chips to reduce clogging
Extra thick web for increased strength and rigidity compared to standard drill bits
Made in the USA
This Chicago-Latrobe 2550 series jobber length drill bit set contains 21 cobalt steel drill bits, including inch sizes 1/16" through 3/8" in 1/64" increments, with a TiN coating and a 135-degree split point for use in heavy-duty drilling applications on hard ferrous and nonmetallic materials. The cobalt steel provides extended tool life compared to high-speed steel drill bits and maintains the tool's toughness and hardness even in high drilling temperatures. The titanium nitride (TiN) coating withstands higher drilling speeds, increases drill bit hardness, and extends tool life when compared to uncoated tools. The self-centering 135-degree split point penetrates hard material without a pilot hole and produces smaller chips that reduce clogging compared to a 118-degree point. Compared to standard drill bits, these tools have a thicker web for increased strength and rigidity. These jobber length drill bits have a versatile midrange drilling depth that is a common choice for general-purpose drilling applications. The round shank accommodates most drill chucks. The set comes in a gray epoxy-coated steel index case with labeled compartments for identification and organization. Case measures 6-1/4 x 4-1/4 x 1-1/4 inches (H x W x D). (H is height, the vertical distance from lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.) Drill bits are cutting tools used to make holes in a range of materials using machines such as handheld portable drills, machining centers, and lathes. Drill bits come in a variety of lengths and types, the most common of which is the twist drill bit. The round, twisted shaft of the twist drill bit typically has two cutting edges and flutes. The helical twist of the flutes brings chips up and away from the cutting edges and allows for coolant to reach the cutting edges. Jobber length twist drill bits, the most common length of twist drill bit, offer a good compromise of length and reach to work with the widest range of materials and applications. Mechanic's length twist drill bits (also called maintenance length) are a little shorter than jobber length and less prone to deflection when drilling. Short length twist drill bits (also called stub or screw-machine length) are the shortest and stiffest twist drill bits, helping to reduce the chance of deflection or breakage when drilling. Reduced shank drill bits (also called Silver and Deming drill bits) have a shank that is smaller in diameter than its shaft, permitting drilling machines with either a 1/2" or 3/4" drill chuck to create large holes. Long length twist drill bits (also called taper length) are a little longer than jobber length, allowing for deeper holes and longer reach. Extra long twist drill bits (also called extension) are longer than long length twist drill bits for greater reach or for drilling deeper holes. Chicago-Latrobe manufactures drill bits and accessories, reamers, countersinks, and blanks. The company, founded in 1890 and headquartered in Clemson, SC, meets International Organization for Standardization (ISO) standard 9001. What’s in the Box? 21 drill bits, inch sizes 1/16" through 3/8" in 1/64" increments Steel case
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