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    T491 • Form E Bottoming Entry Taper • Through Coolant M6 and Larger • Metric • For Aluminum

    Beyond™ Solid Carbide Forming Taps • Blind Holes

    Material Number5551084

    ISO Catalog IDT491M080X125R6HXANSI Catalog IDT491M080X125R6HX

    T491 Metric Threading - 5551084 - Kennametal
    T491 Metric Threading - 5551084 - Kennametal
    T491 Metric Threading - 5551084 - Kennametal
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    T491 Metric Threading - 5551084 - Kennametal
    T491 Metric Threading - 5551084 - Kennametal
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    • N Non-Ferrous
    • Tapping: Blind HoleTapping: Blind Hole
    • Class of Fit: 6HXClass of Fit: 6HX
    • Chamfer Form E (1.5–2)Chamfer Form E (1.5–2)
    • Through Coolant: Axial: TappingThrough Coolant: Axial: Tapping
    • HMHM
    • Manufacturer’s Specs: MManufacturer’s Specs: M
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    Drawings for 5551084
    Metric
    Inch
    Material Number5551084
    ISO Catalog IDT491M080X125R6HX
    ANSI Catalog IDT491M080X125R6HX
    GradeKCN14
    [D1-TDZ] Thread Diameter SizeM8 X 1.25
    [L] Overall Length 80 mm
    [L] Overall Length 3.15 in
    [L3] Thread Length 10 mm
    [L3] Thread Length 0.39 in
    [L2] Useable Length 32 mm
    [L2] Useable Length 1.26 in
    [D] Adapter / Shank / Bore Diameter8 mm
    [D] Adapter / Shank / Bore Diameter0.315 in
    Number of Lube Grooves2
    Thread Tolerance Class ISO6HX-I
    See all Product Variants

    Workpiece Materials

    • Non-Ferrous

    Uses and application

    • Tapping: Blind HoleTapping: Blind Hole
    • Class of Fit: 6HXClass of Fit: 6HX
    • Chamfer Form E (1.5–2)Chamfer Form E (1.5–2)
    • Through Coolant: Axial: TappingThrough Coolant: Axial: Tapping
    • HMHM
    • Manufacturer’s Specs: MManufacturer’s Specs: M

    Grades

    KCN14

    KCN14

    Coated carbide, PVD — two-layer coating over fine-grain carbide. Coating consists of low-friction CrC/C over wear-resistant TiN. CrC/C resists galling of non-ferrous materials to the tap. Provides superior performance for tapping cast aluminum and other non-ferrous materials.

    Features and benefits

    • KCN14 TiN + CrC/C for aluminum.

    Create Solution to calculate Feeds and Speeds

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    Tolerance

    shank tolerance
    Dtolerance h6 + / -
    6+0, -0,008
    8 10+0, -0,009
    12 16+0, -0,011
    shank tolerance
    Dtolerance h6 + / -
    .250–.375+0, -.0004
    .438–.625+0, -.0004
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    SDS

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    DA Collets
    1014133
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    100DA080M
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    DA Collets
    1014174
    100DA085M
    100DA085M
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    DA Collets
    1014244
    200DA080M
    200DA080M
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    TG100 Series • Metric
    TG100 Series • Metric
    1014462
    100TGHP080M
    100TGHP080M
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    TG100 Series • Metric
    1014699
    100TG080M
    100TG080M
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    ER Standard Collets • Metric
    ER Standard Collets • Metric
    1025838
    20ER080M
    20ER080M
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    ER Standard Collets • Metric
    ER Standard Collets • Metric
    1025839
    20ER090M
    20ER090M
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    TG100 Series • Metric
    TG100 Series • Metric
    1080543
    100TGC080M
    100TGC080M
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    ER Standard Collets • Metric
    ER Standard Collets • Metric
    1084750
    32ER080M
    32ER080M
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    DA Collets
    DA Collets
    1092288
    180DAC080M
    180DAC080M
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