Description
Cobalt – Aircraft Type J Jobber Length DrillsHeavy duty constructionCobalt steel offers increased hardness, toughness, wear resistance and heat resistanceRecommended for drilling tough, high tensile strength materials that generate higher cutting temperatures including high alloy steels, ferrous castings, titanium, inconel, stainless steels and other difficult-to-drill materials135Degreesplit pointCountry of OriginUSADrill Bit Size / Cutting Diameter (DC) 21Cutting Depth u200e2-1/8″Decimal Equivalent 0.1590Flute Length u200e2-1/8″Drill Bit Size / Cutting Diameter (DC) – Letter /xa0Wire Gauge 21Point Shape SplitMeasurement Type Wire GageShank Type StraightAngle 135 DegreesConnection Diameter Machine Side (DCONMS) 0.161″Cutting Edge Material HSSCoShape NAS 907, Type JFlute Type StandardTool Radius 135 DegreesCoating Black OxideSeries/List 2340Coolant Supply Property (CSP) ExternalOverall Length (OAL) u200e3-1/4″
