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Bottom Hand Taps are designed specifically for carrying a full usable thread to the bottom of a tapped hole. Bottom taps have 1 or 2 chamfered threads and are typically used as a secondary tap after the initial threads have been created using a Taper or Plug tap. Bottom taps may be used in both blind or through hole tapping. For a complete thread to the bottom of a blind hole, a Bottom tap will be required.

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Marson Thread-Serts & Installation Tools
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#8-36 UNF Bottom Tap, 4 Flute, H2, Bright Finish
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#8-36 UNF Bottom Tap, 4 Flute, H2, Bright Finish

8FDTB

$6.84 /Each

3/4
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3/4"-16 UNF Bottom Tap, 4 Flute, H3, Bright Finish

75FDTB

$40.86 /Each

1-1/2
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1-1/2"-6 UNC Bottom Tap, 4 Flute, H4, Bright Finish

150CDTB

$237.78 /Each

1/2
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1/2"-20 UNF Bottom Tap, 4 Flute, H3, Bright Finish

50FDTB

$18.73 /Each

5/16
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5/16"-18 UNC Bottom Tap, 4 Flute, H3, Bright Finish

31CDTB

$8.29 /Each

1/4
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1/4"-20 UNC Bottom Tap, 4 Flute, H3, Bright Finish

25CDTB

$6.80 /Each

7/16
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7/16"-14 UNC Bottom Tap, 4 Flute, H3, Bright Finish

43CDTB

$15.89 /Each

7/8
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7/8"-14 UNF Bottom Tap, 4 Flute, H4, Bright Finish

87FDTB

$61.60 /Each

#10-24 UNC Bottom Tap, 4 Flute, H3, Bright Finish
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#10-24 UNC Bottom Tap, 4 Flute, H3, Bright Finish

10CDTB

$6.51 /Each

1/4
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1/4"-28 UNF Bottom Tap, 4 Flute, H3, Bright Finish

25FDTB

$6.80 /Each

9/16
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9/16"-12 UNC Bottom Tap, 4 Flute, H3, Bright Finish

56CDTB

$28.98 /Each

1-1/4
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1-1/4"-12 UNF Bottom Tap, 6 Flute, H4, Bright Finish

125FDTB

$146.45 /Each

3/8
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3/8"-16 UNC Bottom Tap, 4 Flute, H3, Bright Finish

37CDTB

$9.09 /Each

#6-32 UNC Bottom Tap, 3 Flute, H3, Bright Finish
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#6-32 UNC Bottom Tap, 3 Flute, H3, Bright Finish

6CDTB

$5.91 /Each

3/4
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3/4"-10 UNC Bottom Tap, 4 Flute, H3, Bright Finish

75CDTB

$40.86 /Each

1
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1"-14 UNF Bottom Tap, 4 Flute, H4, Bright Finish

100FDTB

$85.78 /Each

1-1/8
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1-1/8"-12 UNF Bottom Tap, 4 Flute, H4, Bright Finish

112FDTB

$132.62 /Each

#10-32 UNF Bottom Tap, 4 Flute, H3, Bright Finish
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#10-32 UNF Bottom Tap, 4 Flute, H3, Bright Finish

10FDTB

$6.51 /Each

7/16
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7/16"-20 UNF Bottom Tap, 4 Flute, H3, Bright Finish

43FDTB

$15.89 /Each

5/16
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5/16"-24 UNF Bottom Tap, 4 Flute, H3, Bright Finish

31FDTB

$8.29 /Each

1-1/8
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1-1/8"-7 UNC Bottom Tap, 4 Flute, H4, Bright Finish

112CDTB

$125.29 /Each

9/16
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9/16"-18 UNF Bottom Tap, 4 Flute, H3, Bright Finish

56FDTB

$28.98 /Each

#2-56 UNC Bottom Tap, 3 Flute, H2, Bright Finish
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#2-56 UNC Bottom Tap, 3 Flute, H2, Bright Finish

2CDTB

$15.60 /Each

7/8
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7/8"-9 UNC Bottom Tap, 4 Flute, H4, Bright Finish

87CDTB

$61.60 /Each

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