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Bottoming Taps

Bottoming Taps

Triumph ThunderTap® bottoming taps are made from premium high speed steel and are suitable for machine or hand threading in holes that are not drilled completely thru the material (blind holes). Used when you need threads as close to the bottom of the hole as possible.

Bottoming taps typically have a 1-2 thread chamfer at the tip.

Size/PitchThread DesignationThread Limit# of FlutesDrill SizePkg QtyPart #
4-40 NC H2 3 43 1 071370
4-40 NC H2 3 43 12 071140
6-32 NC H2 3 36 1 071371
6-32 NC H3 3 36 12 071141
8-32 NC H3 4 29 1 071373
8-32 NC H3 4 29 12 071143
10-24 NC H3 4 25 1 071375
10-24 NC H3 4 25 12 071145
10-32 NF H3 4 21 1 071376
10-32 NF H3 4 21 12 071146
12-24 NC H3 4 16 1 071377
12-24 NC H3 4 16 12 071147
1/4–20 NC H3 4 7 6 071100
1/4–28 NF H3 4 3 6 071101
5/16–18 NC H3 4 F 6 071102
5/16–24 NF H3 4 I 6 071103
3/8–16 NC H3 4 5/16 6 071104
3/8–24 NF H3 4 Q 6 071105
7/16–14 NC H3 4 U 3 071106
7/16–20 NF H3 4 25/64 3 071107
1/2–13 NC H3 4 27/64 3 071108
1/2–20 NF H3 4 29/64 3 071109
9/16–12 NC H3 4 31/64 1 071110
9/16–18 NF H3 4 33/64 1 071111
5/8–11 NC H3 4 17/32 1 071112
5/8–18 NF H3 4 37/64 1 071113
3/4–10 NC H3 4 21/32 1 071114
3/4–16 NF H3 4 11/16 1 071115
7/8–9 NC H4 4 49/64 1 071116
7/8–14 NF H4 4 13/16 1 071117
1"–8 NC H4 4 7/8 1 071118
1"–12 NF H4 4 59/64 1 071119
  • ThunderTap Bottoming Tap from Triumph Twist Drill - Triumph Twist Drill 071119

    Triumph Twist Drill

    Bottoming Tap, Size 1-12 NF, Triumph 071119

    Triumph 071119 - Bottoming Tap, Size 1-12 NFThese Straight Flute Thunder Taps are made from premium …

    MSRP: $124.37
    $73.91
  • ThunderTap Bottoming Tap from Triumph Twist Drill - Triumph Twist Drill 071118

    Triumph Twist Drill

    Bottoming Tap, Size 1-8 NC, Triumph 071118

    Triumph 071118 - Bottoming Tap, Size 1-8 NCThese Straight Flute Thunder Taps are made from premium H…

    MSRP: $124.37
    $73.91
  • ThunderTap Bottoming Tap from Triumph Twist Drill - Triumph Twist Drill 071117

    Triumph Twist Drill

    Bottoming Tap, Size 7/8-14 NF, Triumph 071117

    Triumph 071117 - Bottoming Tap, Size 7/8-14 NFThese Straight Flute Thunder Taps are made from premiu…

    MSRP: $92.80
    $55.14
  • ThunderTap Bottoming Tap from Triumph Twist Drill - Triumph Twist Drill 071116

    Triumph Twist Drill

    Bottoming Tap, Size 7/8-9 NC, Triumph 071116

    Triumph 071116 - Bottoming Tap, Size 7/8-9 NCThese Straight Flute Thunder Taps are made from premium…

    MSRP: $92.80
    $55.14
  • ThunderTap Bottoming Tap from Triumph Twist Drill - Triumph Twist Drill 071115

    Triumph Twist Drill

    Bottoming Tap, Size 3/4-16 NF, Triumph 071115

    Triumph 071115 - Bottoming Tap, Size 3/4-16 NFThese Straight Flute Thunder Taps are made from premiu…

    MSRP: $67.34
    $40.01
  • ThunderTap Bottoming Tap from Triumph Twist Drill - Triumph Twist Drill 071114

    Triumph Twist Drill

    Bottoming Tap, Size 3/4-10 NC, Triumph 071114

    Triumph 071114 - Bottoming Tap, Size 3/4-10 NC These Straight Flute Thunder Taps are made from premi…

    MSRP: $67.34
    $40.01

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