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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Call Customer Service at 908-98-ATLAS or email: Sales@atlascuttingtools.com
  • 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
    A55135 ACT 1/4-20 0.255 2-1/2 H3 3 Spiral Fluted Powdered Metal Uncoated 14
    $28.70
  • A55136 ACT 1/4-28 0.255 2-1/2 H3 3 Spiral Fluted Powdered Metal Uncoated 83
    $28.70
  • A55154 ACT 1/4-20 0.255 2-1/2 H3 3 Spiral Fluted Powdered Metal ALTiN 16
    $41.27
  • A55155 ACT 1/4-28 0.255 2-1/2 H3 3 Spiral Fluted Powdered Metal ALTiN 11
    $41.27
  • A55173 ACT 1/4-20 0.255 2-1/2 H3 3 Spiral Fluted Powdered Metal STEAM OXIDE 55
    $30.80
  • A55174 ACT 1/4-28 0.255 2-1/2 H3 3 Spiral Fluted Powdered Metal STEAM OXIDE 63
    $30.80
  • A78236 ACT 1/4-20 0.2550 2-1/2 H3 3 Spiral Fluted Powdered Metal ALTiN 23
    $41.27
  • A78237 ACT 1/4-28 0.2550 2-1/2 H3 3 Spiral Fluted Powdered Metal ALTiN 10
    $41.27
  • A78251 ACT 1/4-20 0.2550 2-1/2 H5 3 Spiral Fluted Powdered Metal TiCN 20
    $41.27
  • A78252 ACT 1/4-28 0.2550 2-1/2 H3 3 Spiral Fluted Powdered Metal TiCN 14
    $41.27
  • A78253 ACT 1/4-28 0.2550 2-1/2 H4 3 Spiral Fluted Powdered Metal TiCN 15
    $33.28
  • A78287 ACT 1/4-20 0.2550 2-1/2 H3 3 Spiral Fluted Powdered Metal STEAM-OXIDE 27
    $30.80
  • A78288 ACT 1/4-28 0.2550 2-1/2 H3 3 Spiral Fluted Powdered Metal STEAM-OXIDE 28
    $30.80
  • A78342 ACT 1/4-20 0.2550 2-1/2 H3 3 Spiral Fluted Powdered Metal Uncoated 100
    $28.70
  • A78343 ACT 1/4-28 0.2550 2-1/2 H3 3 Spiral Fluted Powdered Metal Uncoated 100
    $28.70
  • A55137 ACT 5/16-18 0.318 2-23/32 H3 3 Spiral Fluted Powdered Metal Uncoated 67
    $31.53
  • A55138 ACT 5/16-24 0.318 2-23/32 H3 3 Spiral Fluted Powdered Metal Uncoated 43
    $23.46
  • A55156 ACT 5/16-18 0.318 2-23/32 H3 3 Spiral Fluted Powdered Metal ALTiN 16
    $45.15
  • A55157 ACT 5/16-24 0.318 2-23/32 H3 3 Spiral Fluted Powdered Metal ALTiN 10
    $40.25
  • A55175 ACT 5/16-18 0.318 2-23/32 H3 3 Spiral Fluted Powdered Metal STEAM OXIDE 55
    $33.93
  • A55176 ACT 5/16-24 0.318 2-23/32 H3 3 Spiral Fluted Powdered Metal STEAM OXIDE 80
    $33.77
  • A78224 ACT 5/16-24 0.3180 2.7188 H3 3 Spiral Fluted Powdered Metal Uncoated 28
    $23.46
  • A78238 ACT 5/16-18 0.3180 2.7188 H3 3 Spiral Fluted Powdered Metal ALTiN 15
    $45.15
  • A78239 ACT 5/16-24 0.3180 2.7188 H3 3 Spiral Fluted Powdered Metal ALTiN 20
    $45.10
  • A78254 ACT 5/16-18 0.3180 2.7188 H3 3 Spiral Fluted Powdered Metal TiCN 16
    $45.15
  • A78255 ACT 5/16-18 0.3180 2.7188 H5 3 Spiral Fluted Powdered Metal TiCN 21
    $45.15
  • A78256 ACT 5/16-24 0.3180 2.7188 H3 3 Spiral Fluted Powdered Metal TiCN 2
    $45.15
  • A78257 ACT 5/16-24 0.3180 2.7188 H4 3 Spiral Fluted Powdered Metal TiCN 7
    $33.77
  • A78289 ACT 5/16-18 0.3180 2.7188 H3 3 Spiral Fluted Powdered Metal STEAM-OXIDE 33
    $33.93
  • A78290 ACT 5/16-24 0.3180 2.7188 H3 3 Spiral Fluted Powdered Metal STEAM-OXIDE 21
    $33.77
  • A78344 ACT 5/16-18 0.3180 2.7188 H3 3 Spiral Fluted Powdered Metal Uncoated 100
    $31.53
  • A55139 ACT 3/8-16 0.381 2-15/16 H3 3 Spiral Fluted Powdered Metal Uncoated Available to Order*
    $37.27
  • A55140 ACT 3/8-24 0.381 2-15/16 H3 3 Spiral Fluted Powdered Metal Uncoated 44
    $37.27
  • A55158 ACT 3/8-16 0.381 2-15/16 H3 3 Spiral Fluted Powdered Metal ALTiN 13
    $53.56
  • A55159 ACT 3/8-24 0.381 2-15/16 H3 3 Spiral Fluted Powdered Metal ALTiN Available to Order*
    $40.11
  • A55177 ACT 3/8-16 0.381 2-15/16 H3 3 Spiral Fluted Powdered Metal STEAM OXIDE 32
    $40.03
  • A55178 ACT 3/8-24 0.381 2-15/16 H3 3 Spiral Fluted Powdered Metal STEAM OXIDE 64
    $39.95
  • A78225 ACT 3/8-16 0.3810 2-15/16 H3 3 Spiral Fluted Powdered Metal Uncoated 18
    $37.27
  • A78226 ACT 3/8-24 0.3810 2-15/16 H3 3 Spiral Fluted Powdered Metal Uncoated 64
    $27.84
  • A78240 ACT 3/8-24 0.3810 2-15/16 H3 3 Spiral Fluted Powdered Metal ALTiN 21
    $53.52
  • A78258 ACT 3/8-16 0.3810 2-15/16 H3 3 Spiral Fluted Powdered Metal TiCN 19
    $53.56
  • A78259 ACT 3/8-16 0.3810 2-15/16 H5 3 Spiral Fluted Powdered Metal TiCN 12
    $53.56
  • A78260 ACT 3/8-24 0.3810 2-15/16 H3 3 Spiral Fluted Powdered Metal TiCN 6
    $45.43
  • A78261 ACT 3/8-24 0.3810 2-15/16 H4 3 Spiral Fluted Powdered Metal TiCN 10
    $40.11
  • A78291 ACT 3/8-16 0.3810 2-15/16 H3 3 Spiral Fluted Powdered Metal STEAM-OXIDE 25
    $40.03
  • A78292 ACT 3/8-24 0.3810 2-15/16 H3 3 Spiral Fluted Powdered Metal STEAM-OXIDE 17
    $39.99
  • A55141 ACT 7/16-14 0.323 3-5/32 H3 4 Spiral Fluted Powdered Metal Uncoated 37
    $47.33
  • A55142 ACT 7/16-20 0.323 3-5/32 H3 4 Spiral Fluted Powdered Metal Uncoated 22
    $35.46
  • A55161 ACT 7/16-20 0.323 3-5/32 H3 4 Spiral Fluted Powdered Metal ALTiN 1
    $42.47
  • A55179 ACT 7/16-14 0.323 3-5/32 H3 4 Spiral Fluted Powdered Metal STEAM OXIDE 64
    $50.67
  • A55180 ACT 7/16-20 0.323 3-5/32 H3 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
  • A78228 ACT 7/16-20 0.3230 3.1563 H3 3 Spiral Fluted Powdered Metal Uncoated 33
    $47.33
  • A78262 ACT 7/16-14 0.3230 3.1563 H3 3 Spiral Fluted Powdered Metal TiCN 16
    $54.88
  • A78264 ACT 7/16-20 0.3230 3.1563 H5 3 Spiral Fluted Powdered Metal TiCN 15
    $50.79
  • A78293 ACT 7/16-14 0.3230 3.1563 H3 3 Spiral Fluted Powdered Metal STEAM-OXIDE 21
    $50.55
  • A78294 ACT 7/16-20 0.3230 3.1563 H3 3 Spiral Fluted Powdered Metal STEAM-OXIDE 24
    $50.38
  • A78235 ACT 2-56 0.1410 1-3/4 H2 2 Spiral Fluted Powdered Metal ALTiN 11
    $40.03
  • A78245 ACT 2-56 0.1410 1-3/4 H2 2 Spiral Fluted Powdered Metal TiCN 21
    $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 Available to Order*
    $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 19
    $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 83
    $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 60
    $27.96
  • A55151 ACT 8-32 0.168 2-1/8 H3 3 Spiral Fluted Powdered Metal ALTiN 2
    $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 37
    $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 2
    $40.03
  • A55153 ACT 10-32 0.194 2-3/8 H3 3 Spiral Fluted Powdered Metal ALTiN 16
    $40.03
  • A55171 ACT 10-24 0.194 2-3/8 H3 3 Spiral Fluted Powdered Metal STEAM OXIDE 4
    $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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