Precision Twist R09 High Speed Steel Long Length Drill Bit, Black Oxide Finis...

Description

Precision Twist R09 High Speed Steel Long Length Drill Bit, Black Oxide Finis...
Product Overview
Size:
9/32"
Size:9/32" The Precision Twist R09 jobber-length drill bit is a 118-degree
conventional point, tanged shank drill bit made of HSS with a steam tempering
finish. With general-purpose geometry, and conforming to automotive industry
standards, the R09 series provides a secure holding drill bit for drilling
into a wide variety of substances with best performance drilling into steel
and cast iron. It is suitable for drilling to a depth up to six times the
diameter of the drill. The R09 series has a type N flute form, with a regular
helix angle of 21 to 34 degrees. Steam tempering finish gives a strongly
adhering blue oxide surface that acts to retain cutting fluid and prevent chip
to tool welding, reducing the formation of a built-up edge. 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
tang at the end of the taper is used for ejecting the drill bit from the
spindle, with the aid of a drift pin. 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) industry standards, which help ensure that drill bits
around the world conform to the same specifications. Dormer Pramet
manufactures cutting tools under the following brands: Precision Twist Drill,
Dormer, Union Butterfield and Pramet. The company has locations around the
world, and provides tools adhering to ANSI, NAS, and DIN standards.
Features
Extra-length, for deeper holes
Tanged shank, for a secure and accurate tool-holding system with positive split-sleeve drivers
Steam tempering (also called black oxide), to retain cutting fluids and to prevent chip-to-tool welding
High-speed steel (HSS), for use on a wide variety of materials
118-degree conventional point angles, for general drilling applications
Details
Package Dimensions : 6.2 x 1.4 x 1.3 inches; 8 Ounces
Item model number : 051918
Date First Available : April 8, 2010
Manufacturer : Precision Dormer
Best Sellers Rank: #1,764,606 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #269 in Long Length Drill Bits
Quality Products
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