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    T680 • Metric DIN 371, and 376 • Form C Semi-Bottoming Chamfer

    Beyond™ Spiral-Flute HSS-E Taps • Blind Holes

    Material Number4159940

    ISO Catalog IDT680M040X070R6H-D1ANSI Catalog IDT680M040X070R6H-D1

    T680 RHSF mm Threading - 4159940 - Kennametal
    T680 RHSF mm Threading - 4159940 - Kennametal
    T680 RHSF mm Threading - 4159940 - Kennametal
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    T680 RHSF mm Threading - 4159940 - Kennametal
    T680 RHSF mm Threading - 4159940 - Kennametal
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    • N Non-Ferrous
    • Threading: Blind HoleThreading: Blind Hole
    • Class of Fit: 6HClass of Fit: 6H
    • DIN number 371DIN number 371
    • DIN number 376DIN number 376
    • Chamfer Form C (2–3)Chamfer Form C (2–3)
    • 3861838618
    • Manufacturer’s Specs: MManufacturer’s Specs: M
    • Flood Coolant: TappingFlood Coolant: Tapping
    • Tapping Helix Angle: 45°Tapping Helix Angle: 45°
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    Drawings for 4159940
    Metric
    Inch
    Material Number4159940
    ISO Catalog IDT680M040X070R6H-D1
    ANSI Catalog IDT680M040X070R6H-D1
    GradeKSN38
    [D1-TDZ] Thread Diameter SizeM4 X 0,7
    [L] Overall Length 63 mm
    [L] Overall Length 2.48 in
    [L3] Thread Length 7 mm
    [L3] Thread Length .276 in
    [L2] Useable Length 21 mm
    [L2] Useable Length .8268 in
    [D] Adapter / Shank / Bore Diameter4.5 mm
    [D] Adapter / Shank / Bore Diameter.1772 in
    [Z] Number of Flutes2
    Dimension StandardDIN 371
    Thread Tolerance Class ISO6H-I
    See all Product Variants

    Workpiece Materials

    • Non-Ferrous

    Uses and application

    • Threading: Blind HoleThreading: Blind Hole
    • Class of Fit: 6HClass of Fit: 6H
    • DIN number 371DIN number 371
    • DIN number 376DIN number 376
    • Chamfer Form C (2–3)Chamfer Form C (2–3)
    • 3861838618
    • Manufacturer’s Specs: MManufacturer’s Specs: M
    • Flood Coolant: TappingFlood Coolant: Tapping
    • Tapping Helix Angle: 45°Tapping Helix Angle: 45°

    Features and benefits

    • KSN38 DLC for tapping aluminum.

    Create Solution to calculate Feeds and Speeds

    After creating a solution just choose the Feeds & Speeds icon and our system will provide recommendations. You can customize the information by adding your machine and specifications or make adjustments using the sliders.

    Tolerance

    shank tolerance
    D inchtolerance h9
    .141–.635+0, -.0015
    .635–1.51+0, -.0020
    1.51–2.01+0, -.0030
    shank tolerance
    Dtolerance h9
    1 3+0, -0,025
    3,5 6+0, -0,030
    7 10+0, -0,036
    11 18+0, -0,043
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    Application Data

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    SDS

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    DA K series - Tap Collets
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