Spiral Flute CNC Style

Spiral Flute CNC Style

Spiral Fluted Semi-Bottoming - ANSI Threads
Spiral Fluted Semi-Bottoming - ANSI Threads
Spiral Fluted Semi-Bottoming - Metric Threads
Spiral Fluted Semi-Bottoming - Metric Threads

Spiral fluted semi-bottoming taps are cutting tools designed for creating threads in holes that are not blind. These taps are equipped with a unique spiral fluted design that provides several advantages over traditional straight fluted taps. The spiral fluted design allows for the efficient evacuation of chips, reduces heat buildup, and provides a smoother and more accurate tapping operation.

One of the key benefits of spiral fluted semi-bottoming taps is their ability to prevent the tap from bottoming out in the hole, which can cause damage to both the tap and the workpiece. These taps have a shortened thread length, which allows for the creation of threads close to the bottom of the hole, without the risk of the tap going too far. This makes them ideal for applications where a partial thread is required, or where a through-hole must be tapped to a specific depth.

  • Compare SKU Vendor Size Shank Diameter Overall Length H Limit D Limit NC / NF Square Size Square Length Thread Length Number of Lube Grooves Number of Flutes Style Material Coating In Stock Price Quantity
    A55161 ACT 7/16-20 0.323 3-5/32 H5 4 Spiral Fluted Powdered Metal ALTiN 1
    $42.47
  • A78368 ACT M12 X 1.75 0.3670 3-3/8 D3 3 Spiral Fluted Powdered Metal Uncoated 42
    $63.37
  • A55179 ACT 7/16-14 0.323 3-5/32 H3 4 Spiral Fluted Powdered Metal STEAM OXIDE 64
    $50.67
  • A78377 ACT M12 X 1.75 0.3670 3-3/8 D3 3 Spiral Fluted Powdered Metal STEAM-OXIDE 6
    $68.15
  • A55180 ACT 7/16-20 0.323 3-5/32 H5 4 Spiral Fluted Powdered Metal STEAM OXIDE 23
    $50.55
  • A78227 ACT 7/16-14 0.3230 3.1563 H3 3 Spiral Fluted Powdered Metal Uncoated 34
    $35.46
  • A57667 ACT M14 X 2.0 0.429 3-19/32 D7 3 Spiral Fluted Powdered Metal Uncoated 19
    $89.84
  • A78228 ACT 7/16-20 0.3230 3.1563 H3 3 Spiral Fluted Powdered Metal Uncoated 33
    $47.33
  • A57671 ACT M14 X 2.0 0.429 3-19/32 D7 3 Spiral Fluted Powdered Metal ALTiN 9
    $100.85
  • A78303 ACT M14 X 2.0 0.4290 3.5938 D3 3 Spiral Fluted Powdered Metal ALTiN 8
    $100.85
  • A78262 ACT 7/16-14 0.3230 3.1563 H3 3 Spiral Fluted Powdered Metal TiCN 16
    $54.88
  • A78369 ACT M14 X 2.0 0.4290 3.5938 D3 3 Spiral Fluted Powdered Metal Uncoated 27
    $89.84
  • A78263 ACT 7/16-20 0.3230 3.1563 H3 3 Spiral Fluted Powdered Metal TiCN 13
    $67.74
  • A78378 ACT M14 X 2.0 0.4290 3.5938 D3 3 Spiral Fluted Powdered Metal STEAM-OXIDE 24
    $69.84
  • A78264 ACT 7/16-20 0.3230 3.1563 H5 3 Spiral Fluted Powdered Metal TiCN 15
    $50.79
  • A78279 ACT 7/16-14 0.3230 3.1563 H3 3 Spiral Fluted Powdered Metal ALTiN 17
    $67.74
  • A57668 ACT M16 X 2.0 0.48 3-13/16 D7 3 Spiral Fluted Powdered Metal Uncoated 13
    $105.06
  • A78280 ACT 7/16-20 0.3230 3.1563 H3 3 Spiral Fluted Powdered Metal ALTiN 15
    $56.78
  • A57670 ACT M16 X 2.0 0.48 3-13/16 D7 3 Spiral Fluted Powdered Metal STEAM OXIDE 12
    $108.97
  • A78293 ACT 7/16-14 0.3230 3.1563 H3 3 Spiral Fluted Powdered Metal STEAM-OXIDE 21
    $50.55
  • A57672 ACT M16 X 2.0 0.48 3-13/16 D7 3 Spiral Fluted Powdered Metal ALTiN 10
    $99.44
  • A78304 ACT M16 X 2.0 0.4800 3-13/16 D3 3 Spiral Fluted Powdered Metal ALTiN 3
    $118.41
  • A78294 ACT 7/16-20 0.3230 3.1563 H3 3 Spiral Fluted Powdered Metal STEAM-OXIDE 24
    $50.38
  • A78316 ACT M16 X 2.0 0.4800 3-13/16 D3 3 Spiral Fluted Powdered Metal TiCN 9
    $86.70
  • A55143 ACT 1/2-13 0.367 3-3/8 H5 4 Spiral Fluted Powdered Metal Uncoated 7
    $55.78
  • A78370 ACT M16 X 2.0 0.4800 3-13/16 D3 3 Spiral Fluted Powdered Metal Uncoated 33
    $105.63
  • A55144 ACT 1/2-20 0.367 3-3/8 H5 4 Spiral Fluted Powdered Metal Uncoated 47
    $55.78
  • A78379 ACT M16 X 2.0 0.4800 3-13/16 D3 3 Spiral Fluted Powdered Metal STEAM-OXIDE 5
    $84.56
  • A55162 ACT 1/2-13 0.367 3-3/8 H5 4 Spiral Fluted Powdered Metal ALTiN 13
    $80.36
  • A55163 ACT 1/2-20 0.367 3-3/8 H5 4 Spiral Fluted Powdered Metal ALTiN 15
    $80.36
  • A55181 ACT 1/2-13 0.367 3-3/8 H5 4 Spiral Fluted Powdered Metal STEAM OXIDE 10
    $60.04
  • A55182 ACT 1/2-20 0.367 3-3/8 H5 4 Spiral Fluted Powdered Metal STEAM OXIDE 18
    $60.04
  • A78229 ACT 1/2-13 0.3670 3-3/8 H3 3 Spiral Fluted Powdered Metal Uncoated 23
    $55.78
  • A78230 ACT 1/2-20 0.3670 3-3/8 H3 3 Spiral Fluted Powdered Metal Uncoated 29
    $55.78
  • A78265 ACT 1/2-13 0.3670 3-3/8 H3 3 Spiral Fluted Powdered Metal TiCN 22
    $80.36
  • A78266 ACT 1/2-13 0.3670 3-3/8 H5 3 Spiral Fluted Powdered Metal TiCN Available to Order*
    $80.36
  • A78267 ACT 1/2-20 0.3670 3-3/8 H3 3 Spiral Fluted Powdered Metal TiCN 13
    $80.36
  • A78268 ACT 1/2-20 0.3670 3-3/8 H5 3 Spiral Fluted Powdered Metal TiCN 1
    $60.20
  • A78281 ACT 1/2-13 0.3670 3-3/8 H3 3 Spiral Fluted Powdered Metal ALTiN 18
    $80.36
  • A78282 ACT 1/2-20 0.3670 3-3/8 H3 3 Spiral Fluted Powdered Metal ALTiN 8
    $65.34
  • A78295 ACT 1/2-13 0.3670 3-3/8 H3 3 Spiral Fluted Powdered Metal STEAM-OXIDE 24
    $60.04
  • A78296 ACT 1/2-20 0.3670 3-3/8 H3 3 Spiral Fluted Powdered Metal STEAM-OXIDE 35
    $58.96
  • A55145 ACT 5/8-11 0.48 3-13/16 H6 4 Spiral Fluted Powdered Metal Uncoated 14
    $79.95
  • A55146 ACT 5/8-18 0.48 3-13/16 H5 4 Spiral Fluted Powdered Metal Uncoated 55
    $79.95
  • A55164 ACT 5/8-11 0.48 3-13/16 H6 4 Spiral Fluted Powdered Metal ALTiN 4
    $119.53
  • A55165 ACT 5/8-18 0.48 3-13/16 H5 4 Spiral Fluted Powdered Metal ALTiN 23
    $119.53
  • A55183 ACT 5/8-11 0.48 3-13/16 H6 4 Spiral Fluted Powdered Metal STEAM OXIDE 19
    $114.70
  • A55184 ACT 5/8-18 0.48 3-13/16 H5 4 Spiral Fluted Powdered Metal STEAM OXIDE Available to Order*
    $86.01
  • A78231 ACT 5/8-11 0.4800 3-13/16 H3 3 Spiral Fluted Powdered Metal Uncoated 41
    $107.20
  • A78232 ACT 5/8-18 0.4800 3-13/16 H3 3 Spiral Fluted Powdered Metal Uncoated 20
    $80.36
  • A78241 ACT 5/8-11 0.4800 3-13/16 H3 3 Spiral Fluted Powdered Metal STEAM-OXIDE 22
    $110.99
  • A78242 ACT 5/8-18 0.4800 3-13/16 H3 3 Spiral Fluted Powdered Metal STEAM-OXIDE Available to Order*
    $83.20
  • A78269 ACT 5/8-11 0.4800 3-13/16 H3 3 Spiral Fluted Powdered Metal TiCN 20
    $153.38
  • A78270 ACT 5/8-18 0.4800 3-13/16 H3 3 Spiral Fluted Powdered Metal TiCN 23
    $117.35
  • A78283 ACT 5/8-11 0.4800 3-13/16 H3 3 Spiral Fluted Powdered Metal ALTiN 8
    $153.42
  • A55147 ACT 3/4-10 0.59 4-1/4 H3 4 Spiral Fluted Powdered Metal Uncoated 87
    $125.34
  • A55148 ACT 3/4-16 0.59 4-1/4 H5 4 Spiral Fluted Powdered Metal Uncoated 29
    $93.39
  • A55167 ACT 3/4-16 0.59 4-1/4 H5 4 Spiral Fluted Powdered Metal ALTiN 3
    $140.67
  • A55185 ACT 3/4-10 0.59 4-1/4 H3 4 Spiral Fluted Powdered Metal STEAM OXIDE 19
    $134.08
  • A55186 ACT 3/4-16 0.59 4-1/4 H5 4 Spiral Fluted Powdered Metal STEAM OXIDE 16
    $134.08
  • A78233 ACT 3/4-10 0.5900 4-1/4 H3 4 Spiral Fluted Powdered Metal Uncoated 58
    $93.39
  • A78234 ACT 3/4-16 0.5900 4-1/4 H3 4 Spiral Fluted Powdered Metal Uncoated 23
    $93.39
  • A78243 ACT 3/4-10 0.5900 4-1/4 H3 4 Spiral Fluted Powdered Metal STEAM-OXIDE 24
    $134.08
  • A78244 ACT 3/4-16 0.5900 4-1/4 H3 4 Spiral Fluted Powdered Metal STEAM-OXIDE 13
    $97.46
  • A78271 ACT 3/4-10 0.5900 4-1/4 H3 4 Spiral Fluted Powdered Metal TiCN 23
    $137.42
  • A78284 ACT 3/4-10 0.5900 4-1/4 H3 4 Spiral Fluted Powdered Metal ALTiN 10
    $179.35
  • A78285 ACT 3/4-16 0.5900 4-1/4 H3 4 Spiral Fluted Powdered Metal ALTiN 11
    $140.67
  • A78424 ACT 3/4-16 0.5900 4-1/4 H3 4 Spiral Fluted Powdered Metal TiCN 1
    $103.00
  • A78235 ACT 2-56 0.1410 1-3/4 H2 2 Spiral Fluted Powdered Metal ALTiN 9
    $40.03
  • A78245 ACT 2-56 0.1410 1-3/4 H2 2 Spiral Fluted Powdered Metal TiCN 18
    $31.87
  • A78286 ACT 2-56 0.1410 1-3/4 H2 2 Spiral Fluted Powdered Metal STEAM-OXIDE 83
    $29.90
  • A78341 ACT 2-56 0.1410 1-3/4 H2 2 Spiral Fluted Powdered Metal Uncoated 74
    $27.96
  • A55130 ACT 4-40 0.141 1-7/8 H2 2 Spiral Fluted Powdered Metal Uncoated 6
    $27.96
  • A55149 ACT 4-40 0.141 1-7/8 H2 2 Spiral Fluted Powdered Metal ALTiN Available to Order*
    $40.03
  • A55168 ACT 4-40 0.141 1-7/8 H2 2 Spiral Fluted Powdered Metal STEAM OXIDE 7
    $29.90
  • A78246 ACT 4-40 0.1410 1-7/8 H2 3 Spiral Fluted Powdered Metal TiCN 17
    $40.03
  • A55131 ACT 6-32 0.141 2 H3 2 Spiral Fluted Powdered Metal Uncoated 100
    $27.96
  • A55150 ACT 6-32 0.141 2 H3 2 Spiral Fluted Powdered Metal ALTiN 20
    $40.03
  • A55169 ACT 6-32 0.141 2 H3 2 Spiral Fluted Powdered Metal STEAM OXIDE 79
    $29.90
  • A78247 ACT 6-32 0.1410 2 H3 3 Spiral Fluted Powdered Metal TiCN 27
    $40.03
  • A55132 ACT 8-32 0.168 2-1/8 H3 3 Spiral Fluted Powdered Metal Uncoated 22
    $27.96
  • A55151 ACT 8-32 0.168 2-1/8 H3 3 Spiral Fluted Powdered Metal ALTiN 28
    $40.03
  • A55170 ACT 8-32 0.168 2-1/8 H3 3 Spiral Fluted Powdered Metal STEAM OXIDE 50
    $29.90
  • A78248 ACT 8-32 0.1680 2-1/8 H3 3 Spiral Fluted Powdered Metal TiCN 40
    $40.03
  • A55133 ACT 10-24 0.194 2-3/8 H3 3 Spiral Fluted Powdered Metal Uncoated 34
    $27.96
  • A55134 ACT 10-32 0.194 2-3/8 H3 3 Spiral Fluted Powdered Metal Uncoated 100
    $27.96
  • A55152 ACT 10-24 0.194 2-3/8 H3 3 Spiral Fluted Powdered Metal ALTiN 20
    $40.03
  • A55153 ACT 10-32 0.194 2-3/8 H3 3 Spiral Fluted Powdered Metal ALTiN 10
    $40.03
  • A55171 ACT 10-24 0.194 2-3/8 H3 3 Spiral Fluted Powdered Metal STEAM OXIDE 20
    $30.06
  • A55172 ACT 10-32 0.194 2-3/8 H3 3 Spiral Fluted Powdered Metal STEAM OXIDE 29
    $30.06
  • A78249 ACT 10-24 0.1940 2-3/8 H3 3 Spiral Fluted Powdered Metal TiCN 17
    $32.94
  • A78250 ACT 10-32 0.1940 2-3/8 H3 3 Spiral Fluted Powdered Metal TiCN 19
    $40.03

* Lead times can vary from 1–10 business days. Call (908) 98-ATLAS or email sales@atlascuttingtools.com for details.

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