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Drill America DWDSWD Qualtech 5 Piece High-Speed Steel Silver and Deming Drill Bit Set in Metal Case, Black Oxide Finish, 1/2" Round Shank, Spiral Flute, 135 Degrees Split Point (Pack of 1)
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About Drill America DWDSWD Qualtech 5 Piece High-Speed
Drill America Qualtech 5 piece 135 degrees split point heavy duty drill bit set comes in a metal case. Manufactured to National Aerospace Standard 907. these drills are self-centering and reduces thrust. Ideal for portable or machine drilling. Short, rugged construction performs well in a broad range of materials in the iron and steel families. Screw machine drills are popular in the automotive and construction industries. They are often used in screw machine setup where spindle clearance is limited. Sizes smaller than 1/16-inches have the standard 118 degrees point. High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance. Black oxide treatment adds lubricity and creates small pockets on the surface of the tool that act to hold coolant near the cutting edge. 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. Set include fractional sizes: 9/16", 5/8", 3/4", 7/8, 1". 1/2-inches reduce shank.
