Precision Twist R56 High Speed Steel Reduced Shank Drill Bit, Uncoated (Bright) and Black Oxide Finish, 1/2" Reduced Shank, 118 Degree Conventional Point, 1 1/4"

Precision Twist R56 High Speed Steel Reduced Shank Drill Bit, Uncoated (Bright) and Black Oxide Finish, 1/2" Reduced Shank, 118 Degree Conventional Point, 1 1/4" Review

Precision Twist R56 High Speed Steel Reduced Shank Drill Bit, Uncoated (Bright) and Black Oxide Finish, 1/2" Reduced Shank, 118 Degree Conventional Point, 1 1/4" Feature

• Half inch round shank allows larger sized drills to fit into small size chucks
• Combination black oxide and bright finish, improves lubricity, resists corrosion, and will not chip or flake off
• Jobber-length drill bits, most common length drill bit, suitable for a wide range of applications
• 118-degree conventional point angles, for general drilling applications
• High-speed steel (HSS), for use on a wide variety of materials

The Precision Twist R56 Jobber-length, uncoated, 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, and nickel. 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.

Combination black oxide and bright finish improves lubricity, resists corrosion, and will not chip or flake off. Black oxide also helps to prevent buildup and welding of material on the cutting edge when working with iron and steel.

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 1800’s, but nowadays, it’s come to mean any reduced shank twist drill bit.

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 machine tool called a lathe, to drill a hole. 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 the chips up and away from the cutting edge. They are made to ANSI standards, which ensure that drill bits around the world, confirm to the same specifications.

Together, the Precision and Dormer brands represent a new, streamlined organization that provides a strong North American tool brand for high productivity Carbide and HSS drill and tap products. Precision was founded in 1952 in Crystal Lake, Illinois. Dormer tools, was founded in 1913 in Sheffield, England, is known worldwide for innovative metalworking products.

Precision Twist R58 High Speed Steel Reduced Shank Drill Bit, Uncoated (Bright) and Black Oxide Finish, 3/4" Reduced Shank, 118 Degree Conventional Point, 1 13/32"

Precision Twist R58 High Speed Steel Reduced Shank Drill Bit, Uncoated (Bright) and Black Oxide Finish, 3/4" Reduced Shank, 118 Degree Conventional Point, 1 13/32" Review

Precision Twist R58 High Speed Steel Reduced Shank Drill Bit, Uncoated (Bright) and Black Oxide Finish, 3/4" Reduced Shank, 118 Degree Conventional Point, 1 13/32" Feature

• Three-quarter-inch round shank allows larger sized drills to fit into small size chucks
• Combination black oxide and bright finish, improves lubricity, resists corrosion, and will not chip or flake off
• Jobber-length drill bits, most common length drill bit, suitable for a wide range of applications
• 118-degree conventional point angles, for general drilling applications
• High-speed steel (HSS), for use on a wide variety of materials

The Precision Twist R58 Jobber-length, uncoated, 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, and nickel. It can drill to a depth up to one and a half times the diameter of the drill size. Flute length is three inches, overall length is six inches, with a half-inch, reduced shank.

Combination steam tempered (sometimes called black oxide) and uncoated finish improves lubricity, resists corrosion, and will not chip or flake off. Black oxide also helps to prevent buildup and welding of material on the cutting edge when working with iron and steel.

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 as they were made by Silver & Deming in the late 1800s. Now, this refers to any reduced shank twist drill bit.

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. They are made to ANSI (fractional sizing) standards, which help ensure that drill bits around the world conform to the same specifications.

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.

Chicago Latrobe 150 High-Speed Steel Jobber Drill Bit, Black Oxide Coated, Round Shank, 118 Degree Conventional Point, Letter Size G (Pack of 12)

Chicago Latrobe 150 High-Speed Steel Jobber Drill Bit, Black Oxide Coated, Round Shank, 118 Degree Conventional Point, Letter Size G (Pack of 12) Review

Chicago Latrobe 150 High-Speed Steel Jobber Drill Bit, Black Oxide Coated, Round Shank, 118 Degree Conventional Point, Letter Size G (Pack of 12) Feature

• General purpose geometry for drilling in a wide range of operating conditions and materials
• Manufactured from premium high-speed steel
• 118 degree point, the most popular drill for general-purpose applications
• Metric sizes are manufactured to DIN 338 specifications
• Black oxide surface finish increases wear resistance and adds lubricity, improving chip flow

General purpose jobber length drill. Round shanks allow use with a wide variety of toolholding systems. When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging. General purpose for workign on carbon steel, cast iron and non-ferrous materials.