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Chicago Latrobe 120DHT High-Speed Steel Long Length Drill Bit, TiN Coated, Round Shank with Tang, Parabolic Flute, 135 Degree Notched Point

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Product Specifications
Finish Types
TiN
Material Type
High-Speed Steel
Drill Point
Split
Cutting Angle
135  Degrees
Brand Name
Chicago Latrobe
Flute Type
Parabolic
Mfg Series #
120DHT
Shank Type
Round with Tang
UNSPSC Code
20121600
System of Measurement
Inch

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Currently showing 1-20 of 21 Next 1 »
1/16" 1-3/4" 3" 12 55236 B00462RKJW 1 $63.94 Buy Options
5/64" 2" 3-3/4" 12 55237 B00462RKKQ 1 $64.98 Buy Options
7/64" 2-1/2" 4-5/8" 1 55239 B00462RKME 1 $70.91 Buy Options
23/64" 5-3/8" 6-3/4" 1 55255 B000LEU79O 6 $21.24 Buy Options
3/8 " 5-3/8" 6-3/4" 1 55256 B000LEY0QU 6 $21.32 Buy Options
25/64" 5-5/8" 7" 1 55257 B000LER23I 1 $25.38 Buy Options
13/32" 5-5/8" 7" 1 55258 B000LEZQ68 1 $24.31 Buy Options
27/64" 5-11/16" 7-1/4" 1 55259 B000LF0J2I 1 $25.08 Buy Options
7/16" 5-11/16" 7-1/4" 1 55260 B000LF2TQC 1 $25.17 Buy Options
29/64" 5-3/4" 7-1/2" 1 55261 B000LES2B4 1 $27.23 Buy Options
15/32" 5-3/4" 7-1/2" 1 55262 B000LED69M 1 $28.36 Buy Options
31/64" 5-3/4" 7-3/4" 1 55263 B002E8VR4Y 1 $28.48 Buy Options
1/2 " 5-3/4" 7-3/4" 1 55264 B000LE511S 1 $29.70 Buy Options
33/64" 6" 8" 1 55265 B000LEVGJ4 1 $47.64 Buy Options
17/32" 6" 8" 1 55266 B000LF6R3I 1 $38.44 Buy Options
35/64" 6-1/4" 8-1/4" 1 55267 B000LER7W4 1 $40.89 Buy Options
9/16" 6-1/4" 8-1/4" 1 55268 B000LEORP4 1 $41.07 Buy Options
37/64" 6-1/2" 8-3/4" 1 55269 B000LEYWG8 1 $45.41 Buy Options
19/32" 6-1/2" 8-3/4" 1 55270 B000LERM3S 1 $45.65 Buy Options
39/64" 6-1/2" 8-3/4" 1 55271 B000LEOYP2 1 $49.81 Buy Options

Key Features

  • Parabolic long length drill bit has a drilling depth of 8 to 12 times its diameter and has an extended flute and overall length to drill deeper and reach farther
  • High-speed steel (HSS) provides hardness for wear resistance, and the titanium nitride (TiN) coating offers increased wear resistance, extended tool life, and higher hardness
  • Self-centering 135-degree notched point penetrates material without a pilot hole more easily than a conventional point, and maintains a sharp cutting edge
  • Parabolic flutes are wider than standard flutes for improved rigidity in deep drilling applications, and increased coolant flow and chip evacuation
  • Round shank with tang has a flat shank end for use with positive split sleeve drivers and other drills that accept tanged shanks

Product Description

The Chicago-Latrobe 120DHT series parabolic, long length drill bit is made from high-speed steel with a TiN coating and has a 135-degree notched point for use in deep drilling applications on ferrous and nonmetallic materials. High-speed steel (HSS) provides hardness for wear resistance, and the titanium nitride (TiN) coating offers increased wear resistance, extended tool life, and higher hardness than an uncoated drill bit. A self-centering 135-degree notched point penetrates material without a pilot hole more easily than a conventional point, and maintains a sharp cutting edge longer than a split point. The parabolic flutes are wider than standard flutes for improved rigidity in deep drilling applications, as well as increased coolant flow and chip evacuation to reduce clogging. A long length drill bit reaches farther and drills deeper than a jobber length drill bit because it has longer flutes and overall length. The parabolic flutes enable this bit to drill to a depth of 8 to 12 times its diameter. The round shank with tang has a flat shank end for use with positive split sleeve drivers and other drills that accept tanged shanks.

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 for 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 twist drill bits (also called Silver and Deming drill bits) have a shank that is smaller in diameter than its shaft, permitting drilling machines with a 1/4", 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 length 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.

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