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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 071377

    Triumph Twist Drill

    Bottoming Tap, Size 12-24 NC, Triumph 071377

    Triumph 071377 - Bottoming Tap, Size 12-24 NC These Straight Flute Thunder Taps are made from premiu…

    MSRP: $11.92
    $7.08
  • ThunderTap Bottoming Tap from Triumph Twist Drill - Triumph Twist Drill 071376

    Triumph Twist Drill

    Bottoming Tap, Size 10-32 NF, Triumph 071376

    Triumph 071376 - Bottoming Tap, Size 10-32 NF These Straight Flute Thunder Taps are made from premiu…

    MSRP: $11.31
    $6.72
  • ThunderTap Bottoming Tap from Triumph Twist Drill - Triumph Twist Drill 071375

    Triumph Twist Drill

    Bottoming Tap, Size 10-24 NC, Triumph 071375

    Triumph 071375 - Bottoming Tap, Size 10-24 NCThese Straight Flute Thunder Taps are made from premium…

    MSRP: $11.31
    $6.72
  • ThunderTap Bottoming Tap from Triumph Twist Drill - Triumph Twist Drill 071373

    Triumph Twist Drill

    Bottoming Tap, Size 8-32 NC, Triumph 071373

    Triumph 071373 - Bottoming Tap, Size 8-32 NCThese Straight Flute Thunder Taps are made from premium …

    MSRP: $10.61
    $6.30
  • ThunderTap Bottoming Tap from Triumph Twist Drill - Triumph Twist Drill 071371

    Triumph Twist Drill

    Bottoming Tap, Size 6-32 NC, Triumph 071371

    Triumph 071371 - Bottoming Tap, Size 6-32 NCThese Straight Flute Thunder Taps are made from premium …

    MSRP: $10.61
    $6.30
  • ThunderTap Bottoming Tap from Triumph Twist Drill - Triumph Twist Drill 071370

    Triumph Twist Drill

    Bottoming Tap, Size 4-40 NC, Triumph 071370

    Triumph 071370 - Bottoming Tap, Size 4-40 NCThese Straight Flute Thunder Taps are made from premium …

    MSRP: $13.44
    $7.99

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