Manufactured from premium materials to exacting standards
Chicago-Latrobe 69848 1/2" Reduced Shanks Drills w/Flatted Shank 33-Piece Set
This Chicago-Latrobe 190F Series High-Speed Steel 1/2" Reduced Shank Set contains 33 drills, including sizes 1/2"-1" by 1/64" increments. Industrial quality High-Speed Steel provides hardness for wear resistance, and are an ideal choice for alloyed steel, carbon steel, cast iron and wood. The bits feature self-centering 118° split points to penetrate material without a pilot hole. 3 flats on the shank help prevent drills from slipping under high torque. The set includes a metal index case.
190C 8PCS 9/16-1X16TH | 190F 33PC 1/2-1X64TH | |
---|---|---|
Brand | Chicago-Latrobe | Chicago-Latrobe |
Drill Point | Self-Centering 118° Split Point | Self-Centering 118° Split Point |
Surface Treatment/Coating | Gold Oxide | Black Oxide |
Material | Cobalt | High Speed Steel |
Length | Silver & Deming | Silver & Deming |
Flats on Shank | Yes | Yes |
Drills Included | 9/16" - 1" x 1/16" | 1/2" - 1" x 1/64" |
# of Drills | 8 | 33 |
Case | Metal Case | Metal Stand |
This Chicago-Latrobe 190F series reduced shank drill bit set contains 33 high-speed steel drill bits, including inch sizes 1/2-Inches through 1-Inches in 1/64-Inches increments, with a black oxide finish and a 118-degree split point for use with drilling machines with a 1/2-Inches chuck to create large holes in ferrous materials. High-speed steel (HSS) provides hardness for wear resistance, and the black oxide finish acts as a lubricant to reduce wear while promoting chip and coolant flow. The self-centering 118-degree split point penetrates material without a pilot hole. Commonly called Silver and Deming drill bits, these reduced shank drill bits have a standardized 1/2-Inches diameter shank. The shank has three flats for better tool grip than a standard round shank.The drill bits are stamped with their size for identification. The set comes in a gray epoxy-coated steel stand, measuring 16-1/4 x 7 x 5-7/8 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-Inches or 3/4-Inches 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? 33 drill bits, inch sizes 1/2-Inches through 1-Inches in 1/64-Inches increments Steel stand
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