1/4" - 28 2-Flute, H3 Semi-Bottoming Series/List # 2093 Spiral Flute Tap MT3330085

HPT†- High Performance Tap - Aluminum Recommended for all types of aluminum alloys. CrN coating especially recommended for high-silicon aluminum alloys. Spiral Flute Tapsare designed to lift the chips out of the hole in blind hole tapping, eliminating chip evacuation problems which can result in damaged threads and broken taps. They will also bridge openings, keyways and other interruptions in the tapped hole. Semi-Interrupted Thread(3-Flute taps only) Semi-Bottoming Style(2-3 thread chamfer) allows threading close to the bottom of blind holes but cuts more efficiently than standard bottoming taps due to a slightly longer chamfer which distributes the cutting load over greater number of teeth. CNC Reduced Neck Designenhances chip evacuation and cutting fluid flow to the cutting teeth for reduced friction, heat and galling. Also reduces contact between the tap the work piece. P/M Powder Metallurgy High Speed SteelPremium Steel Engineered For:† Hardness / Wear Resistance / Tool / Heat Resistance / Toughness and Strength / Performance under Difficult Cutting Conditions / Higher Cutting Speeds / Increased ProductivityCountry of OriginUSAWarning-Proposition 65- For Californian Users onlyWARNING: This product contains a chemical known to the State of California to cause cancer or Birth defects. For more information go towww.P65Warnings.ca.gov Thread Diameter Size (TDZ) 1/4" Thread Tolerance Class (TCTR) H3 Threads per Inch (TPI) 28 Tool Type High Performance Tap Overall Length (OAL) u200e2-1/2" Chamfer Semi-Bottoming Thread Cutting Part Length (THL) 7/16" Coating Bright Flute Count (NOF) 2 Flute Type Spiral Flute Helix Angle (FHA) 45 Degrees Style Semi-Bottoming Applicable Material Aluminum / Non-Ferrous Materials Measurement Type Fractional Cutting Edge Material HSSPM Series/List # 2093