STS Industrial - Bolts & Screws

 

SPIRAL POINT TAPS

Spiral Point Taps are designed with angled flutes at the cutting end. These flutes propel the cuttings forward and down, away from the tool which reduces loading and clogging in the flutes. This feature plus the excellent shearing action of the flutes make the Spiral Point Tap ideal for production tapping thru holes. For best results and longest tool life, always use with cutting fluid.

Spiral Point Taps

  • HIGH SPEED STEEL SPIRAL POINT TAPS:

    Made in the USA. Spiral point design.

    High Speed Steel Spiral Point Tap

    AVAILABLE SIZES:

    SIZE

    THREAD

    OVERALL LENGTH

    LENGTH OF THREADS

    NO. OF FLUTES

    0 80 1  5/8   5/16 2
    1 64 1 11/16   3/8 2
    1 72 1 11/16   3/8 2
    2 56 1  3/4   7/16 3
    2 64 1  3/4   7/16 3
    3 48 1 13/16   1/2 3
    3 56 1 13/16   1/2 3
    4 40 1  7/8   9/16 3
    4 36 1  7/8   9/16 3
    4 48 1  7/8   9/16 3
    5 40 1 15/16   5/8 3
    5 44 1 15/16   5/8 3
    6 32 2  11/16 3
    6 40 2  11/16 3
    8 32 2  1/8   3/4 4
    8 36 2  1/8   3/4 4
    10 24 2  3/8   7/8 4
    10 32 2  3/8   7/8 4
    12 24 2  3/8  15/16 4
    12 28 2  3/8  15/16 4
      1/4 20 2  1/2 1 4
      1/4 28 2  1/2 1 4
      5/16 18 2 23/32 1  1/8 4
      5/16 24 2 23/32 1  1/8 4
      3/8 16 2 15/16 1  1/4 4
      3/8 24 2 15/16 1  1/4 4
      7/16 14 3  5/32 1  7/16 4
      7/16 20 3  5/32 1  7/16 4
      1/2 13 3  3/8 1 21/32 4
      1/2 20 3  3/8 1 21/32 4
      9/16 12 3 19/32 1 21/32 4
      9/16 18 3 19/32 1 21/32 4
      5/8 11 3 13/16 1 13/16 4
      5/8 18 3 13/16 1 13/16 4
      3/4 10 4  1/4 2 4
      3/4 16 4  1/4 2 4

    All dimensions are in inches.

  • METRIC HIGH SPEED STEEL SPIRAL POINT TAPS:

    Made in the USA. Spiral point design.

    High Speed Steel Spiral Point Tap

    AVAILABLE SIZES:

    SIZE

    THREAD PITCH

    NO. OF FLUTES

    1.6 0.35 2
    1.8 0.35 2
    2 0.40 3
    2.2 0.45 3
    2.5 0.45 3
    3 0.50 3
    3.5 0.60 3
    4 0.70 4
    4.5 0.75 4
    5 0.80 4
    5.5 0.90 4
    6 1.00 4
    6.3 1.00 4
    7 1.00 4
    8 1.00 4
    8 1.25 4
    10 1.25 4
    10 1.50 4
    12 1.25 4
    12 1.75 4
    14 1.50 4
    14 2.00 4
    16 1.50 4
    16 2.00 4
    18 2.50 4
    20 2.50 4
    20 1.50 4

    All dimensions are in millimeters.

  • NITRO HIGH SPEED STEEL SPIRAL POINT TAPS:

    Made in the USA. Treated with a Nitride surface treatment for increased performance and tool life.

    Nitro Spiral Point Tap

    AVAILABLE SIZES:

    SIZE

    THREAD

    OVERALL LENGTH

    LENGTH OF THREADS

    NO. OF FLUTES

    0 80 1  5/8   5/16 2
    1 64 1 11/16   3/8 2
    1 72 1 11/16   3/8 2
    2 56 1  3/4   7/16 3
    2 64 1  3/4   7/16 3
    3 48 1 13/16   1/2 3
    3 56 1 13/16   1/2 3
    4 40 1  7/8   9/16 3
    4 36 1  7/8   9/16 3
    4 48 1  7/8   9/16 3
    5 40 1 15/16   5/8 3
    5 44 1 15/16   5/8 3
    6 32 2  11/16 3
    6 40 2  11/16 3
    8 32 2  1/8   3/4 4
    8 36 2  1/8   3/4 4
    10 24 2  3/8   7/8 4
    10 32 2  3/8   7/8 4
    12 24 2  3/8  15/16 4
    12 28 2  3/8  15/16 4
      1/4 20 2  1/2 1 4
      1/4 28 2  1/2 1 4
      5/16 18 2 23/32 1  1/8 4
      5/16 24 2 23/32 1  1/8 4
      3/8 16 2 15/16 1  1/4 4
      3/8 24 2 15/16 1  1/4 4
      7/16 14 3  5/32 1  7/16 4
      7/16 20 3  5/32 1  7/16 4
      1/2 13 3  3/8 1 21/32 4
      1/2 20 3  3/8 1 21/32 4
      9/16 12 3 19/32 1 21/32 4
      9/16 18 3 19/32 1 21/32 4
      5/8 11 3 13/16 1 13/16 4
      5/8 18 3 13/16 1 13/16 4
      3/4 10 4  1/4 2 4
      3/4 16 4  1/4 2 4

    All dimensions in inches.

  • NITRO MULTI-APPLICATION SPIRAL POINT TAPS:

    Made in the USA. These taps are designed for machine tapping operations in a wide range of material groups, including difficult to machine materials such as stainless steel. The Nitro Multi-Application Spiral Point Tap yields improved thread quality, overall finish,  and tool life.

    Nitro Multi Application-Spiral Point Tap

    AVAILABLE SIZES:

    INCH SIZES:

    SIZE

    THREAD

    NO. OF FLUTES

    4 40 2
    4 48 2
    5 40 3
    5 44 3
    6 32 3
    6 40 3
    8 32 3
    8 36 3
    10 24 3
    10 32 3
    12 24 3
    12 28 3
      1/4 20 3
      1/4 28 3
      5/16 18 3
      5/16 24 3
      3/8 16 3
      3/8 24 3
      7/16 14 3
      7/16 20 3
      1/2 13 3
      1/2 20 3
      9/16 12 3
      9/16 18 3
      5/8 11 3
      5/8 18 3
     11/16 11 3
     11/16 16 3
      3/4 10 3
      3/4 16 3
      7/8 9 3
      7/8 14 3
    1 8 3
    1 12 3

    All dimensions in inches.

    METRIC SIZES:

    SIZE

    THREAD PITCH

    NO. OF FLUTES

    3 0.50 3
    3.5 0.60 3
    4 0.70 3
    5 0.80 3
    6 1.00 3
    7 1.00 3
    8 1.25 3
    8 1.00 3
    10 1.50 3
    10 1.25 3
    12 1.75 3
    12 1.25 3
    14 2.00 3
    14 1.50 3
    16 2.00 3
    16 1.50 3
    18 2.50 3
    18 1.50 3
    20 2.50 3
    20 1.50 3
    22 2.50 3
    22 1.50 3
    24 3.00 3

    All dimensions in millimeters.

  • OVERSIZED HIGH SPEED STEEL SPIRAL POINT TAPS:

    Made in the USA. For Oversized tapping applications, usually to tap a hole slightly larger to accommodate coatings such as hot dipped galvanizing.

    High Speed Steel Spiral Point Tap

    AVAILABLE SIZES:

    SIZE

    THREAD

    OVERSIZE

    NO. OF FLUTES

    8 32 0.003″ 3
    10 24 0.003″ 4
    10 32 0.003″ 4
      1/4 20 0.005″ 4
      5/16 18 0.005″ 4
      3/8 16 0.005″ 4
      7/16 14 0.005″ 4
      1/2 13 0.005″ 4
      5/8 11 0.005″ 4

    All dimensions in inches.

    • STANDARD TAP DRILL SIZES

      TAP SIZE

      THREAD

      DRILL SIZE

      % OF THREAD

      0 80   3/64 71-81
      1 64 53 59-67
      1 72 53 67-75
      2 56 50 62-69
      2 64 50 70-79
      3 48   5/64 70-77
      3 56 46 69-78
      4 40 43 65-71
      4 48 42 61-68
      5 40 38 65-72
      5 44 37 63-71
      6 32 36 71-78
      6 40 33 69-77
      8 32 29 62-69
      8 36 29 70-78
      10 24 25 69-75
      10 32 21 68-79
      12 24 16 66-72
      12 28 15 70-78
        1/4 20 7 70-75
        1/4 28 3 72-80
        5/16 18 F 72-77
        5/16 24 1 67-75
        3/8 16   5/16 72-77

      TAP SIZE

      THREAD

      DRILL SIZE

      % OF THREAD

        3/8 24 Q 71-79
        7/16 14 U 70-75
        7/16 20  25/64 65-72
        1/2 13  27/64 73-78
        1/2 20  29/64 65-72
        9/16 12  31/64 68-72
        9/16 18  33/64 58-65
        5/8 11  17/32 75-79
        5/8 18  37/64 58-65
        3/4 10  21/32 68-72
        3/4 16  11/16 71-77
        7/8 9  49/64 72-76
        7/8 14  13/16 62-67
      1 8   7/8 73-77
      1 12  59/64 67-75
      1 14  15/16 61-67
      1  1/8 7  63/64 72-76
      1  1/8 12 1  3/16 66-72
      1  1/4 7 1  7/64 76
      1  1/4 12 1 11/64 72
      1  3/8 6 1  7/32 72
      1  3/8 12 1 19/64 72
      1  1/2 6 1 11/32 72
      1  1/2 12 1 27/64 72

      Drill sizes shown are applicable for taps sold from STS Industrial.

    • METRIC TAP DRILL SIZES

      TAP SIZE

      THREAD

      DRILL SIZE

      % OF THREAD

      1.6 0.35 1.25 MM 69
      1.8 0.35 1.45 MM 69
      2 0.40 1.60 MM 69
        1/16 66
      2.2 0.45 1.75 MM 70
      2.5 0.45 2.05 MM 69
      46 67
      3 0.50 40 70
      3.5 0.60 33 72
      4 0.70 30 73
      4.5 0.75 3.70 MM 74
      26 70
      5 0.80 4.2 MM 69
      19 68
      5.5 0.90 4.6 MM 68
      14 67
      6 0.75 5.30 MM 74
      4 73
      6 1.00 10 71
      7 0.75 6.30 MM 74
      D 72
      7 1.00  15/64 73
      8 1.25 6.70 MM 74
      8 1.00 7.00 MM 69
      J 66

      TAP SIZE

      THREAD

      DRILL SIZE

      % OF THREAD

      9 1.25 7.75 MM 73
      10 1.50 8.40 MM 76-82
      10 1.25 8.7 MM 73
       11/32 71
      11 1.50   3/8 71
      12 1.75 10.20 MM 74
       13/32 71
      12 1.25  27/64 72
      14 2.00 15/32 76-81
      14 1.50 12.50 MM 71
      16 2.00 35/64 76-81
      18 2.50 39/64 74
      18 1.50 16.50 MM 70
      20 2.50  11/16 74-78
      22 2.50 49/64 75
      24 3.00 21.00 MM 73
      53/64 72-76
      27 3.00 24.00 MM 73
      15/16 78
      30 3.50 1  3/64 75
      33 3.50 29.50 MM 74
      1 11/64 72
      36 4.00 1  1/4 82

      Drill sizes shown are applicable for taps sold from STS Industrial.

    • PIPE THREAD TAP DRILL SIZES

      TAPER PIPE NPT

      TAP SIZE

      THREAD

      DRILL SIZE

        1/8 27 Q
        1/4 18   7/16
        3/8 18   9/16
        1/2 14  45/64
        3/4 14  29/32
      1 11  1/2 1  9/64
      1  1/4 11  1/2 1 31/64
      1  1/2 11  1/2 1 23/32
      2 11  1/2 2  3/16
      2  1/2 8 2 39/64
      3 8 3 15/64

      STRAIGHT PIPE NPS

      TAP SIZE

      THREAD

      DRILL SIZE

        1/8 27  11/32
        1/4 18   7/16
        3/8 18  37/64
        1/2 14  23/32
        3/4 14  59/64
      1 11  1/2 1  5/32
      1  1/4 11  1/2 1  1/2
      1  1/2 11  1/2 1  3/4
      2 11  1/2 2  7/32
      2  1/2 8 2 21/32
      3 8 3 15/64

      Drill sizes shown are applicable for taps sold from STS Industrial.

    • TROUBLESHOOTING

      Tap Troubleshooting Guide


Sources: Drillco Cutting Tools Product Catalog 2013, Champion Cutting Tools 2011 Product Catalog, Norseman/CTD Product Catalog 2013 Note: All material included on this page is informational only, and should not be used as one’s sole source for design purposes. STS Industrial, Inc. and its affiliates do not guarantee the accuracy of the information on this site, and retain no liability for the use or misuse of the information contained on this site.