Threaded Insert Taps

Screw thread insert taps (STI taps) operate in the same manner as “standard” taps, but produce an oversized thread specifically for threaded inserts. During insert installation, the threads cut by an STI tap form the insert into the desired thread size. STI taps are ideal for tapping holes in softer metals that require a strong threaded insert. STI taps are manufactured from high speed steel (HSS) for superior durability. We offer STI taps in a wide range of inch, metric, and spark plug sizes to meet your unique requirements.

SwiftSert Standard Wall Inserts

Available In:

  • Inch sizes from #2 to 3-1/2
  • Metric sizes from M2.2 to M64
  • Manufactured from high speed steel (HSS)
  • Straight flute
  • 4-thread lead
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  1. Product Type Plug Tap Remove This Item
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Product Type  
ID Thread Rotation  
Inside Thread  
  1. M2 x 0.4 1 item
  2. 2-56 1 item
  3. M2.2 x 0.45 1 item
  4. M2.5 x 0.45 1 item
  5. 3-48 1 item
  6. 3-56 1 item
  7. 4-40 1 item
  8. 4-48 1 item
  9. M3 x 0.5 1 item
  10. 1/8-40 1 item
  11. 5-40 1 item
  12. M3.5 x 0.6 1 item
  13. 6-32 1 item
  14. 6-40 1 item
  15. M4 x 0.7 1 item
  16. 8-32 1 item
  17. 8-36 1 item
  18. 3/16-24 1 item
  19. 10-24 1 item
  20. 10-32 1 item
  21. M5 x 0.8 1 item
  22. 12-24 1 item
  23. 12-28 1 item
  24. M6 x 1 2 items
  25. 1/4-20 4 items
  26. 1/4-26 1 item
  27. 1/4-28 2 items
  28. M7 x 1 1 item
  29. 5/16-18 3 items
  30. 5/16-22 1 item
  31. 5/16-24 2 items
  32. M8 x 1 2 items
  33. M8 x 1.25 2 items
  34. M9 x 1 1 item
  35. M9 x 1.25 1 item
  36. 3/8-16 3 items
  37. 3/8-20 1 item
  38. 3/8-24 2 items
  39. 1/8-28 1 item
  40. M10 x 1 1 item
  41. M10 x 1.25 2 items
  42. M10 x 1.5 2 items
  43. 1/8-27 1 item
  44. M11 x 1 1 item
  45. M11 x 1.25 1 item
  46. M11 x 1.5 1 item
  47. 7/16-14 3 items
  48. 7/16-18 1 item
  49. 7/16-20 2 items
  50. M12 x 1 1 item
  51. M12 x 1.25 2 items
  52. M12 x 1.5 1 item
  53. M12 x 1.75 2 items
  54. 1/2-12 1 item
  55. 1/2-13 2 items
  56. 1/2-16 1 item
  57. 1/2-20 2 items
  58. 1/4-19 1 item
  59. 1/4-18 1 item
  60. M14 x 1.25 1 item
  61. M14 x 1.5 2 items
  62. M14 x 2 2 items
  63. 9/16-12 1 item
  64. 9/16-18 2 items
  65. 5/8-11 3 items
  66. 5/8-14 2 items
  67. 5/8-18 2 items
  68. M16 x 1.5 2 items
  69. M16 x 2 2 items
  70. 3/8-19 1 item
  71. 3/8-18 1 item
  72. M18 x 1.5 2 items
  73. M18 x 2 1 item
  74. M18 x 2.5 2 items
  75. 3/4-10 3 items
  76. 3/4-12 1 item
  77. 3/4-16 2 items
  78. M20 x 1.5 2 items
  79. M20 x 2 1 item
  80. M20 x 2.5 2 items
  81. 1/2-14 2 items
  82. M22 x 1.5 2 items
  83. M22 x 2 1 item
  84. M22 x 2.5 1 item
  85. 7/8-11 1 item
  86. 7/8-14 3 items
  87. 7/8-18 1 item
  88. 7/8-9 3 items
  89. M24 x 1.5 1 item
  90. M24 x 2 2 items
  91. M24 x 3 2 items
  92. 1-10 1 item
  93. 1-12 1 item
  94. 1-14 2 items
  95. 1-8 3 items
  96. M26 x 1.5 1 item
  97. 3/4-14 2 items
  98. M27 x 1.5 1 item
  99. M27 x 2 1 item
  100. M27 x 3 1 item
  101. M28 x 1.5 1 item
  102. 1-1/8-12 1 item
  103. 1-1/8-7 1 item
  104. 1-1/8-8 1 item
  105. M30 x 1.5 1 item
  106. M30 x 2 1 item
  107. M30 x 3 1 item
  108. M30 x 3.5 1 item
  109. 1-1/4-12 1 item
  110. 1-1/4-7 1 item
  111. 1-1/4-8 1 item
  112. M33 x 2 1 item
  113. M33 x 3 1 item
  114. M33 x 3.5 1 item
  115. 1-11 1 item
  116. 1-11-1/2 1 item
  117. M34 x 1.5 1 item
  118. 1-3/8-12 1 item
  119. 1-3/8-6 1 item
  120. 1-3/8-8 1 item
  121. M36 x 1.5 1 item
  122. M36 x 2 1 item
  123. M36 x 3 1 item
  124. M36 x 4 1 item
  125. 1-1/2-12 1 item
  126. 1-1/2-6 1 item
  127. 1-1/2-8 1 item
  128. M39 x 3 1 item
  129. M39 x 4 1 item
  130. M42 x 3 1 item
  131. 1-5/8-8 1 item
  132. 1-1/4-11 1 item
  133. M42 x 4.5 1 item
  134. 1-3/4-8 1 item
  135. M45 x 2 1 item
  136. M45 x 4.5 1 item
  137. 1-7/8-8 1 item
  138. M48 x 3 1 item
  139. M48 x 5 1 item
  140. 2 in-8 1 item
  141. M52 x 3 1 item
  142. M52 x 5 1 item
  143. 2-1/8-8 1 item
  144. M54 x 3 1 item
  145. M56 x 3 1 item
  146. M56 x 4 1 item
  147. M56 x 5.5 1 item
  148. 2-1/4-8 1 item
  149. 2-3/8-8 1 item
  150. 2-1/2-8 1 item
  151. M64 x 3 1 item
  152. M64 x 4 1 item
  153. 2-5/8-8 1 item
  154. 2-3/4-8 1 item
  155. 2-7/8-8 1 item
  156. 3 in-8 1 item
  157. 3-1/8-8 1 item
  158. 3-1/4-8 1 item
  159. 3-3/8-8 1 item
  160. 3-1/2-8 1 item
Decimal Outside Diameter  
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Items 1-30 of 259

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  1. 1-1/4-11 STI Plug Tap - High Speed Steel

    Sku #: 35L7H1-1YV17-125P

    1-1/4-11 STI Plug Tap - High Speed Steel
    Special Price $592.50 Regular Price $937.50
  2. 1-11 BSPP STI Plug Tap - High Speed Steel

    Sku #: 35L7H1-1YV17-100P

    1-11 BSPP STI Plug Tap - High Speed Steel
    Special Price $574.96 Regular Price $909.75
  3. 7/8-14 BSPP STI Plug Tap - High Speed Steel

    Sku #: 35L7H1-1YV17-087P

    7/8-14 BSPP STI Plug Tap - High Speed Steel
    Special Price $573.22 Regular Price $907.00
  4. 3/4-14 BSPP STI Plug Tap - High Speed Steel

    Sku #: 35L7H1-1YV17-075P

    3/4-14 BSPP STI Plug Tap - High Speed Steel
    Special Price $324.29 Regular Price $487.50
  5. 5/8-14 BSPP STI Plug Tap - High Speed Steel

    Sku #: 35L7H1-1YV17-062P

    5/8-14 BSPP STI Plug Tap - High Speed Steel
    Special Price $304.00 Regular Price $457.00
  6. 1/2-14 BSPP STI Plug Tap - High Speed Steel

    Sku #: 35L7H1-1YV17-050P

    1/2-14 BSPP STI Plug Tap - High Speed Steel
    Special Price $224.09 Regular Price $336.88
  7. 3/8-19 BSPP STI Plug Tap - High Speed Steel

    Sku #: 35L7H1-1YV17-038P

    3/8-19 BSPP STI Plug Tap - High Speed Steel
    Special Price $174.94 Regular Price $249.13
  8. 1/4-19 BSPP STI Plug Tap - High Speed Steel

    Sku #: 35L7H1-1YV17-025P

    1/4-19 BSPP STI Plug Tap - High Speed Steel
    Special Price $12.38 Regular Price $17.63
  9. 1/8-28 BSPP STI Plug Tap - High Speed Steel

    Sku #: 35L7H1-1YV17-018P

    1/8-28 BSPP STI Plug Tap - High Speed Steel
    Special Price $86.72 Regular Price $123.50
  10. 1-11-1/2 NPT STI Plug Tap - High Speed Steel

    Sku #: 35L7H1-1YV0J-100P

    1-11-1/2 NPT STI Plug Tap - High Speed Steel
    Special Price $295.60 Regular Price $444.38
  11. 3/4-14 NPT STI Plug Tap - High Speed Steel

    Sku #: 35L7H1-1YV0J-075P

    3/4-14 NPT STI Plug Tap - High Speed Steel
    Special Price $179.19 Regular Price $269.38
  12. 1/2-14 NPT STI Plug Tap - High Speed Steel

    Sku #: 35L7H1-1YV0J-050P

    1/2-14 NPT STI Plug Tap - High Speed Steel
    Special Price $128.59 Regular Price $183.13
  13. 3/8-18 NPT STI Plug Tap - High Speed Steel

    Sku #: 35L7H1-1YV0J-037P

    3/8-18 NPT STI Plug Tap - High Speed Steel
    Special Price $104.89 Regular Price $149.38
  14. 1/4-18 NPT STI Plug Tap - High Speed Steel

    Sku #: 35L7H1-1YV0J-025P

    1/4-18 NPT STI Plug Tap - High Speed Steel
    Special Price $85.14 Regular Price $121.25
  15. 1/8-27 NPT STI Plug Tap - High Speed Steel

    Sku #: 35L7H1-1YV0J-018P

    1/8-27 NPT STI Plug Tap - High Speed Steel
    Special Price $71.98 Regular Price $102.50
  16. 7/8-18 STI Plug Tap - High Speed Steel

    Sku #: 35L7H1-1YV0D-087S

    7/8-18 STI Plug Tap - High Speed Steel
    Special Price $169.84 Regular Price $241.88
  17. 1-8 BSW STI Plug Tap - High Speed Steel

    Sku #: 35L7H1-1YV13-100W

    1-8 BSW STI Plug Tap - High Speed Steel
    Special Price $284.37 Regular Price $427.50
  18. 7/8-9 BSW STI Plug Tap - High Speed Steel

    Sku #: 35L7H1-1YV13-087W

    7/8-9 BSW STI Plug Tap - High Speed Steel
    Special Price $231.82 Regular Price $348.50