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Features of a Drill Bit Drill Bits are categorized by: Diameter (Size) Flute Length Overall Length Point Type/Angle Shank Type and Size Material A drill bits categorization and functionality is dependent on these features. To view these products in action check out our product videos! www.drillamerica.net/videos

Flute Length (Cutting Length) Size, Length and Shank Shank Diameter (Size) Flute Length (Cutting Length) Overall Length To view these products in action check out our product videos! www.drillamerica.net/videos

Deeper Look - Overall Length Jobber Length (Standard Length) 118° Conventional Point and 135° Split Point Mechanics Length (Short) Short Black and Gold Drill with 3-Flat Shank 135° Split Point Stub or Screw Machine Shortest Drill Bit Aircraft Extension Drill 6” or 12” long drill bit with jobber length flute Taper Length Drill Long drill bit with long flute length 118° Conventional Point Extra Length (Long Boy) Available in 8”, 12”, 18” or 24” To view these products in action check out our product videos! www.drillamerica.net/videos

Deeper Look - Point/Angle Drill Bit Point Type/Angle: The two most common point types are: 118° Conventional Point 135° Split Point Conventional Point means the drill bit has a 118° point. It is the tip for most standard drill bits Split Point means the drill bit has a 135° point. Split point angle is self centering and prevents the drill from walking during use Also called heavy duty drill bits 118° Conventional Point 135° Split Point

Deeper Look - Shank Drill Bit Shank Describes the end of the bit that is held in the drill chuck. Many types, the most common are: Round (seen to the right) 3-Flat Shank Taper Shank ¼”-28 Threaded Shank SDS Plus Shank Some drill bits may have a reduced shank enabling greater size flexibility. Certain diameters available in ¼”, ⅜” ½” and ¾” To view these products in action check out our product videos! www.drillamerica.net/videos

Deeper Look - Shank (Continued) Round Shank -Most common 3-Flat Shank -Tighter Hold in Drill Chuck Reduced Shank -Can be round or 3-Flat Taper Shank -For larger drills, use on special machinery only Threaded Shank -Used in Aircraft SDS Plus Shank -Used in Masonry

Deeper Look - Material Drill Bit Material The most common materials are: High Speed Steel General purpose drill bit. Most popular material. Cobalt Extra hard for stainless steel 135° Split Point Solid Carbide and Carbide Tipped For non ferrous materials Masonry (Carbide Tipped) For brick, concrete and other masonry work. High Speed Steel Cobalt Solid Carbide Carbide Tipped Masonry

FAQ’s What drill bits do you recommend KFD Drills (Killer Force Drills) are premium grade high speed steel with a 135 degree split point tip. They are our best sellers. What is your most economical drill bit? DWDN drill bits are general purpose, high speed steel with a black oxide finish. What do I need for drilling stainless steel? DWDCO cobalt drill bits (D/ACO for domestic). Do you have large diameter drill bits? For any drill bit over ½” we recommend DWDRSD series reduced shank drill bit with a ½” shank. Do you have long drill bits? The DWDDL series has extra long drill bits with long flute lengths from 8” - 24” long. DWDA/C Aircraft Extension Drills are 6” and 12” long with jobber length flute. Do you have drill sets? Absolutely. Please check catalog for the selection. Do you offer drills for glass and tile? DWDGD series have a tungsten carbide spear point. Suitable for glass, mirrors and very hard ceramic tile. Do you have drill bits for concrete and brick? DAM series are standard round shank masonry drills and SDS series are SDS Plus masonry drill bits. What about wood drills? We have a few pages dedicated to wood drill bits (spade, brad point, forstner etc..) in our catalog.