Drill America – DWD29J-CO-PC 29 Piece M35 Cobalt Drill Bit Set in Round Case (1/16" – 1/2" X 64ths), DWDCO Series

Description

The Drill America DWD29J-CO-PC Qualtech jobber length drill bit set contains
29 cobalt steel drill bits with gold oxide finish in inch sizes 1/16″ to 1/2″
(1/64″ increments). A self-centering 135-degree split point penetrates hard
material without a pilot hole and produces smaller chips that reduce clogging
compared to a 118-degree point. Cobalt steel provides extended tool life
compared to high-speed steel drill bits, and maintains the tool’s toughness
and hardness in high drilling temperatures. A gold oxide finish acts as a
lubricant and provides wear resistance, and the round shank accommodates most
drill chucks. The set comes in a plastic index case with labeled compartments
for identification and organization. Drill bits conform to American National
Standards Institute (ANSI) standards.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 to work with 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 drill bits (also called
Silver and Deming drill bits) have a shank that is smaller in diameter than
its shaft, permitting drilling machines with either a 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 twist drill bits (also called extension) are longer than
long length twist drill bits for greater reach or for drilling deeper
holes.Drill America manufactures cutting tools such as drill bits, taps, dies,
counterbores, countersinks, end mills, and reamers. The company, founded in
1927, is headquartered in Miami, FL.What’s in the Box?(29) drill bits, sizes
1/16″ to 1/2″ in 1/64″ increments(1) plastic case

Features:

• Set of 29 jobber length drill bits includes inch sizes 1/16" to 1/2" in 1/64" increments
• Cobalt steel provides extended tool life compared to high-speed steel drill bits when drilling hard materials
• Gold oxide finish lubricates the drill bit and provides wear resistance
• Self-centering 135-degree split point penetrates hard material without a pilot hole and produces small chips to reduce clogging
• Meets ANSI specifications

Product Details:

• Material: Cobalt
• Finish Type: Gold Oxide
• Shank Type: Round
• Cutting Angle String: 135 Degrees
• Brand: Drill America
• Is Discontinued By Manufacturer ‏ : ‎ No
• Package Dimensions ‏ : ‎ 6.54 x 3.43 x 3.31 inches; 2.2 Pounds
• Item model number ‏ : ‎ DWD29J-CO-PC
• Date First Available ‏ : ‎ October 22, 2013
• Manufacturer ‏ : ‎ Drill America
• Country of Origin ‏ : ‎ China
• Best Sellers Rank: #27,911 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #142 in Screwdriver Bit Sets
• #142 in Screwdriver Bit Sets
• Customer Reviews: 4.5 4.5 out of 5 stars 947 ratings