DORMER Taper Length Drill Bits

A940 and A941 heavy-duty taper length drill bits designed to reduce thrust requirements in old-style wood screws. Feature spiral flutes in the size range 29 - 166 mm

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StyleModelDecimal EquivalentDimension TypeFlute LengthOverall LengthSizes IncludedPrice
AA9413/640.0469Fractional Inch29mm57mm3/64€12.65
AA9411/160.0626Fractional Inch44mm76mm1/16€11.30
AA9415/640.0781Fractional Inch51mm95mm5/64€22.59
AA9413/320.0938Fractional Inch57mm108mm3/32€9.46
AA9417/640.1094Fractional Inch64mm117mm7/64€9.00
AA9411/80.1250Fractional Inch70mm130mm1/8€11.21
AA9419/640.1406Fractional Inch76mm137mm9/64€10.57
AA9415/320.1562Fractional Inch76mm137mm5/32€10.72
AA94111/640.1719Fractional Inch86mm146mm11/64€13.20
AA9413/160.1875Fractional Inch86mm146mm3/16€15.26
AA9415.00.1969Metric87mm132mm5.00€13.40
AA94113/640.2031Fractional Inch92mm152mm13/64€16.83
AA9411/40.2500Fractional Inch95mm156mm1/4€19.62
AA9411/20.5000Fractional Inch121mm197mm1/2€63.26
StyleModelDecimal EquivalentDimension TypeFlute LengthOverall LengthSizes IncludedPrice
AA9401.00.0394Metric33mm56mm1.00€7.00
AA9403/640.0469Fractional Inch29mm57mm3/64€8.20
AA9404.90.1929Metric87mm132mm4.90€6.63
AA9405.00.1969Metric87mm132mm5.00€5.89
AA9405.50.2165Metric91mm139mm5.50€14.98
AA9406.90.2717Metric102mm156mm6.90€22.76
AA9407.50.2953Metric102mm156mm7.50€12.39
AA9409.70.3819Metric121mm184mm9.70€24.52
AA94010.00.3937Metric121mm184mm10.00€18.10
AA94010.50.4134Metric121mm184mm10.50€22.23
AA94027/640.4219Fractional Inch117mm184mm27/64€35.71