Spiral Fluted Semi-Bottoming - ANSI Threads

Spiral Fluted Semi-Bottoming - ANSI Threads

Atlas High Performance Spiral Fluted Semi-Bottoming - ANSI Thread Taps

Spiral Flute Semi Bottoming - ANSI Threads - High Vanadium Powdered Metal

  • Best used for blind hole tapping applications
  •  Optimized for steel, steel alloys, stainless steels, and a variety of other steels up to 32 Rc
  • Steam Oxide finish provides decreased galling and increased lubricity in low carbon steels and gummy materials  
  • Features a 2 -2 1/2 thread chamfer
  • Semi-bottoming 45° helix
  • ALTIN is a high performance coating for milling, tapping and drilling in stainless steels, carbon steels, alloy steels, titanium and cast iron. This coating is extremely heat resistant and can be used with or without coolant. 

Speeds and Feed Info

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  • Size OAL H Limit # of Flutes Coating In Stock Sku Price Quantity
    4-40 1-7/8 H2 2 Uncoated 54
    A55130
    $22.72
  • 4-40 1-7/8 H2 2 STEAM OXIDE 13
    A55168
    $24.30
  • 4-40 1-7/8 H2 2 ALTiN 36
    A55149
    $32.48
  • 6-32 2 H3 2 Uncoated 19
    A55131
    $22.72
  • 6-32 2 H3 2 STEAM OXIDE Call
    A55169
    $24.30
  • 6-32 2 H3 2 ALTiN 20
    A55150
    $32.48
  • 8-32 2-1/8 H3 3 Uncoated 73
    A55132
    $22.72
  • 8-32 2-1/8 H3 3 STEAM OXIDE 48
    A55170
    $24.30
  • 8-32 2-1/8 H3 3 ALTiN 19
    A55151
    $32.48
  • 10-24 2-3/8 H3 3 Uncoated 63
    A55133
    $22.72
  • 10-24 2-3/8 H3 3 STEAM OXIDE 5
    A55171
    $24.30
  • 10-24 2-3/8 H3 3 ALTiN 15
    A55152
    $32.48
  • 10-32 2-3/8 H3 3 Uncoated 100
    A55134
    $22.72
  • 10-32 2-3/8 H3 3 STEAM OXIDE 57
    A55172
    $24.30
  • 10-32 2-3/8 H3 3 ALTiN 12
    A55153
    $32.48
  • 1/4-20 2-1/2 H3 3 Uncoated 89
    A55135
    $23.30
  • 1/4-20 2-1/2 H3 3 STEAM OXIDE 48
    A55173
    $25.05
  • 1/4-20 2-1/2 H3 3 ALTiN 25
    A55154
    $33.52
  • 1/4-28 2-1/2 H3 3 Uncoated 53
    A55136
    $23.30
  • 1/4-28 2-1/2 H3 3 STEAM OXIDE 11
    A55174
    $25.05
  • 1/4-28 2-1/2 H3 3 ALTiN 12
    A55155
    $33.52
  • 5/16-18 2-23/32 H3 3 Uncoated 41
    A55137
    $25.63
  • 5/16-18 2-23/32 H3 3 STEAM OXIDE 67
    A55175
    $27.54
  • 5/16-18 2-23/32 H3 3 ALTiN 7
    A55156
    $36.68
  • 5/16-24 2-23/32 H3 3 Uncoated 58
    A55138
    $25.55
  • 5/16-24 2-23/32 H3 3 STEAM OXIDE 83
    A55176
    $27.46
  • 5/16-24 2-23/32 H3 3 ALTiN 4
    A55157
    $32.69
  • 3/8-16 2-15/16 H3 3 Uncoated 100
    A55139
    $30.20
  • 3/8-16 2-15/16 H3 3 STEAM OXIDE 15
    A55177
    $32.48
  • 3/8-24 2-15/16 H3 3 Uncoated 56
    A55140
    $30.20
  • 3/8-24 2-15/16 H3 3 STEAM OXIDE 75
    A55178
    $32.40
  • 7/16-14 3-5/32 H3 4 Uncoated 24
    A55141
    $38.42
  • 7/16-20 3-5/32 H3 4 Uncoated 23
    A55142
    $38.42
  • Total: items /

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