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    T640 • DIN 371 and 376 • Form C Semi-Bottoming Chamfer • Metric • For Cast Iron and Cast Aluminum

    Beyond™ Straight-Flute HSS-E-PM Taps • Through and Blind Holes

    Material Number4035459

    ISO Catalog IDT640M040X070R6HX-D1ANSI Catalog IDT640M040X070R6HX-D1

    T640 STFL mm Threading - 4035459 - Kennametal
    T640 STFL mm Threading - 4035459 - Kennametal
    T640 STFL mm Threading - 4035459 - Kennametal
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    T640 STFL mm Threading - 4035459 - Kennametal
    T640 STFL mm Threading - 4035459 - Kennametal
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    • K Cast Iron
    • N Non-Ferrous
    • Tapping: Through HoleTapping: Through Hole
    • Threading: Blind HoleThreading: Blind Hole
    • Class of Fit: 6HXClass of Fit: 6HX
    • DIN number 371DIN number 371
    • DIN number 376DIN number 376
    • Chamfer Form C (2–3)Chamfer Form C (2–3)
    • HSS-E-PMHSS-E-PM
    • Manufacturer’s Specs: MManufacturer’s Specs: M
    • Flood Coolant: TappingFlood Coolant: Tapping
    • Tapping Helix Angle: 0°Tapping Helix Angle: 0°
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    Drawings for 4035459
    Metric
    Inch
    Material Number4035459
    ISO Catalog IDT640M040X070R6HX-D1
    ANSI Catalog IDT640M040X070R6HX-D1
    GradeKP6525
    [D1-TDZ] Thread Diameter SizeM4 X 0,7
    [L] Overall Length 63 mm
    [L] Overall Length 2.48 in
    [L3] Thread Length 10 mm
    [L3] Thread Length .39 in
    [L2] Useable Length 21 mm
    [L2] Useable Length .83 in
    [D] Adapter / Shank / Bore Diameter4.5 mm
    [D] Adapter / Shank / Bore Diameter.1772 in
    [Z] Number of Flutes3
    Dimension StandardDIN 371
    Thread Tolerance Class ISO6HX-I
    See all Product Variants

    Workpiece Materials

    • Cast Iron
    • Non-Ferrous

    Uses and application

    • Tapping: Through HoleTapping: Through Hole
    • Threading: Blind HoleThreading: Blind Hole
    • Class of Fit: 6HXClass of Fit: 6HX
    • DIN number 371DIN number 371
    • DIN number 376DIN number 376
    • Chamfer Form C (2–3)Chamfer Form C (2–3)
    • HSS-E-PMHSS-E-PM
    • Manufacturer’s Specs: MManufacturer’s Specs: M
    • Flood Coolant: TappingFlood Coolant: Tapping
    • Tapping Helix Angle: 0°Tapping Helix Angle: 0°

    Grades

    KP6525

    KP6525

    Coated HSS-E-PM. PVD — heat- and wear-resistant high vanadium — cobalt powder metal HSS substrate coated with wear-resistant TiCN base layer and low-friction TiN top layer. Use in steel, cast iron, and cast aluminum with silicon.

    Features and benefits

    • KP6525 TiCN + TiN for cast iron and cast aluminum.

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    Tolerance

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