Best Buy Precision Twist 1290 High Speed Steel Extra Long Length Drill Bit, Uncoated (Bright) Finish, Round Shank, Spiral Flute, 118 Degree Point Angle, 1/8" Sale

Precision Twist 1290 High Speed Steel Extra Long Length Drill Bit, Uncoated (Bright) Finish, Round Shank, Spiral Flute, 118 Degree Point Angle, 1/8" Specification

• Extra-length, for deeper holes
• 118-degree conventional point angles, for general drilling applications
• Round shanks, for use on a variety of tool-holding systems
• Uncoated (bright), economical and useful with a wide range of drilling materials
• High-speed steel (HSS), for use on a wide variety of materials

Precision Twist 1290 High Speed Steel Extra Long Length Drill Bit, Uncoated (Bright) Finish, Round Shank, Spiral Flute, 118 Degree Point Angle, 1/8" Overview

The Precision Twist 1290 jobber drill bit is a conventional point, general-purpose, round shank drill bit made of HSS with an uncoated finish. It is suitable for drilling to a depth up to 12 times the diameter of the drill. Good for portable or machine drilling. The shank diameter is the same as the drill size. It was designed for drilling holes into a wide variety of metals and synthetic materials.

The 1290 series has a type N flute form, with a regular helix angle of 21 to 34 degrees, have best performance drilling into steel or cast iron.The uncoated finish helps keep costs down, yet provides acceptable performance in most situations. The finish helps increase chip flow in soft materials. Spiral flutes act as a passageway for chip extraction from the hole and for coolant to enter the hole. Right-hand twist brings chips up and away from the cutting edge. The extra length allows for more freedom in being able to drill a wider variety of circumstances.

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 DIN 338 industry standards, which 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.

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