STS Industrial - Bolts & Screws

 

STRAIGHT FLUTE HAND TAPS

Straight flute hand taps are the most popular and versatile style of tap in general tapping applications. The straight flutes have multiple teeth with a sharpened leading edge for cutting the desired threads. The chips that are created are pushed forward into the voids allowing a single, continuous tapping operation. For best results and longest tool life, always use with cutting fluid.

AVAILABLE STYLES:
  • TAPER: 7-10 thread chamfer length. Starts the thread square with the workpiece.
  • PLUG: 3-5 thread chamfer length. General use.
  • BOTTOM: 1-2 thread chamfer length. Cuts threads to the bottom of a blind hole.
  • SET: Contains a taper tap, plug tap, and bottom tap for single diameter and thread pitch.

Bottom, Plug, and Taper Taps

  • HIGH SPEED STEEL HAND TAPS:

    Made in the USA. Available in Taper, Plug or Bottom styles, or as a Tap Set.

    High Speed Steel Hand Tap

    AVAILABLE SIZES:

    SIZE

    THREAD

    OVERALL LENGTH

    LENGTH OF THREADS

    NO. OF FLUTES

    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
     11/16 11 4  1/32 1 13/16 4
     11/16 16 4  1/32 1 13/16 4
      3/4 10 4  1/4 2 4
      3/4 16 4  1/4 2 4
      7/8 9 4 11/16 2  7/32 4
      7/8 14 4 11/16 2  7/32 4
    1 8 5  1/8 2  1/2 4
    1 12 5  1/8 2  1/2 4
    1 14 5  1/8 2  1/2 4
    1  1/8 7 5  7/16 2  9/16 4
    1  1/8 12 5  7/16 2  9/16 4
    1  1/4 7 5  3/4 2  9/16 4
    1  1/4 12 5  3/4 2  9/16 6
    1  3/8 6 6  1/16 3 4
    1  3/8 12 6  1/16 3 6
    1  1/2 6 6  3/8 3 4
    1  1/2 12 6  3/8 3 6

    All dimensions are in inches.

  • METRIC HIGH SPEED STEEL HAND TAPS:

    Made in the USA. Available in Taper, Plug or Bottom styles, or as a Tap Set.

    High Speed Steel Hand Tap

    AVAILABLE SIZES:

    SIZE

    THREAD PITCH

    NO. OF FLUTES

    1.5 0.35 2
    1.6 0.35 2
    1.8 0.35 2
    2 0.40 3
    2 0.45 3
    2.2 0.45 3
    2.3 0.40 3
    2.5 0.45 3
    2.6 0.45 3
    3 0.50 3
    3 0.60 3
    3.5 0.60 3
    4 0.50 4
    4 0.70 4
    4.5 0.75 4
    5 0.50 4
    5 0.80 4
    5 0.90 4
    5.5 0.90 4
    6 0.75 4
    6 1.00 4
    6.3 1.00 4
    7 1.00 4
    8 1.00 4
    8 1.25 4
    10 1.00 4
    10 1.25 4
    10 1.50 4
    11 1.50 4
    12 1.25 4
    12 1.50 4
    12 1.75 4
    14 1.25 4
    14 1.50 4
    14 2.00 4
    16 1.50 4
    16 2.00 4
    18 1.00 4
    18 1.50 4
    18 2.00 4
    20 2.50 4
    20 1.00 4
    20 1.50 4
    20 2.00 4
    22 2.50 4
    22 1.50 4
    24 2.50 4
    24 1.50 4
    24 2.00 4
    27 3.00 4
    27 2.00 4
    30 3.00 4
    30 1.50 4
    30 2.00 4
    32 2.00 4
    33 2.00 4
    33 3.50 4
    36 3.00 4
    36 4.00 4
    39 3.00 6
    39 4.00 6
    42 1.50 6
    42 4.50 6
    45 1.50 6
    45 4.50 6
    48 1.50 6
    48 5.00 6
    52 1.50 6
    52 5.00 6

    All dimensions are in millimeters.

  • NITRO HIGH SPEED STEEL HAND TAPS:

    Made in the USA. Treated with a Nitride surface treatment for increased performance and tool life. Available in Taper, Plug or Bottom styles, or as a Tap Set.

    Nitro High Speed Steel Hand Tap

    AVAILABLE SIZES:

    SIZE

    THREAD

    OVERALL LENGTH

    LENGTH OF THREADS

    NO. OF FLUTES

    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
     11/16 11 4  1/32 1 13/16 4
     11/16 16 4  1/32 1 13/16 4
      3/4 10 4  1/4 2 4
      3/4 16 4  1/4 2 4
      7/8 9 4 11/16 2  7/32 4
      7/8 14 4 11/16 2  7/32 4
    1 8 5  1/8 2  1/2 4
    1 12 5  1/8 2  1/2 4
    1 14 5  1/8 2  1/2 4
    1  1/8 7 5  7/16 2  9/16 4
    1  1/8 12 5  7/16 2  9/16 4
    1  1/4 7 5  3/4 2  9/16 4
    1  1/4 12 5  3/4 2  9/16 6
    1  3/8 6 6  1/16 3 4
    1  3/8 12 6  1/16 3 6
    1  1/2 6 6  3/8 3 4
    1  1/2 12 6  3/8 3 6

    All dimensions in inches.

  • 8 THREAD HIGH SPEED STEEL HAND TAPS:

    Made in the USA. For standard 8 thread per inch tapping applications in diameters above 1″ (“oil field” thread, or stud bolt thread) Available in Taper, Plug or Bottom styles, or as a Tap Set.

    High Speed Steel 8-Thread Hand Tap

    AVAILABLE SIZES:

    SIZE

    THREAD

    NO. OF FLUTES

    1  1/8 8 4
    1  1/4 8 4
    1  3/8 8 4
    1  1/2 8 4
    1  5/8 8 6
    1  3/4 8 6
    1  7/8 8 6
    2 8 6
    2  1/8 8 6
    2  1/4 8 6
    2  3/8 8 6
    2  1/2 8 6
    2  5/8 8 6
    2  3/4 8 6
    2  7/8 8 6
    3 8 6
    3  1/4 8 6
    3  1/2 8 6
    3  3/4 8 6
    4 8 8

    All dimensions in inches.

  • LEFT HAND HIGH SPEED STEEL HAND TAPS:

    Made in the USA. For Left Hand Thread tapping applications. Available in Taper, Plug or Bottom styles, or as a Tap Set.

    High Speed Steel Hand Tap

    AVAILABLE SIZES:

    SIZE

    THREAD

    OVERALL LENGTH

    LENGTH OF THREADS

    NO. OF FLUTES

    6 32 2  11/16 3
    8 32 2  1/8   3/4 4
    10 24 2  3/8   7/8 4
    10 32 2  3/8   7/8 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
      7/8 9 4 11/16 2  7/32 4
      7/8 14 4 11/16 2  7/32 4
    1 8 5  1/8 2  1/2 4
    1 12 5  1/8 2  1/2 4
    1 14 5  1/8 2  1/2 4
    1  1/8 7 5  7/16 2  9/16 4
    1  1/8 12 5  7/16 2  9/16 4
    1  1/4 7 5  3/4 2  9/16 4
    1  1/4 12 5  3/4 2  9/16 6
    1  3/8 6 6  1/16 3 4
    1  3/8 12 6  1/16 3 6
    1  1/2 6 6  3/8 3 4
    1  1/2 12 6  3/8 3 6

    All dimensions in inches.

  • OVERSIZED HIGH SPEED STEEL HAND TAPS:

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

    High Speed Steel Hand 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.