STS Industrial - Bolts & Screws

 

LONG LENGTH TAPS

The extended shank length of long length taps is ideal for reaching otherwise inaccessible holes. The thread length is the same as a standard length tap. For best results and longest tool life, always use with cutting fluid.

Long Length Taps

  • PLUG TAP:

    Made in the USA. Plug tap design for blind or thru holes..

    AVAILABLE SIZES:

    SIZE

    THREAD

    OVERALL LENGTH

    FLUTE LENGTH

    NO. OF FLUTES

      1/4 20 6 1 4
      1/4 20 8 1 4
      5/16 18 6 1  1/8 4
      5/16 18 8 1  1/8 4
      3/8 16 6 1  1/4 4
      3/8 16 8 1  1/4 4
      3/8 16 10 1  1/4 4
      7/16 14 6 1  7/16 4
      7/16 14 8 1  7/16 4
      1/2 13 6 1 21/32 4
      1/2 13 8 1 21/32 4
      1/2 13 10 1 21/32 4
      1/2 13 12 1 21/32 4
      5/8 11 6 1 13/16 4
      5/8 11 8 1 13/16 4
      5/8 11 10 1 13/16 4
      5/8 11 12 1 13/16 4
      3/4 10 10 2 4
      3/4 10 12 2 4

    All dimensions are in inches.

  • BOTTOM TAP:

    Made in the USA. Bottom tap design for reaching the bottom of blind holes.

    AVAILABLE SIZES:

    SIZE

    THREAD

    OVERALL LENGTH

    NO. OF FLUTES

    6 32 6 3
    8 32 6 3
    10 24 6 3
    10 32 6 3
      1/4 20 6 3
      1/4 28 6 3
      5/16 18 6 3
      5/16 24 6 3
      3/8 16 6 3
      3/8 24 6 3
      7/16 14 6 3
      7/16 20 6 3
      1/2 13 6 3

    All dimensions are 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.