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Spiralock® Tap WedgeSpiralock® taps are furnished with ramp angles as shown here. This is referred to as style "BT" for bottom tapping. When tapping from the opposite end of a through hole, you must specify Spiralock style "TT" (top tapping), which has the ramp angle facing the opposite direction.

Designed for a wide variety of low-hardness materials that generate long chips. The spiral point pushes chips ahead of the tap in a through hole, while the spiral flute design provides good chip removal from a blind hole. Necked blanks allow better access for lubrication. These taps can be used for hand tapping.

Fast Facts:

  • High speed steel
  • TiN coating
  • Replaces General Purpose taps; can be used for hand tapping
  • Plug chamfer uses spiral point design
  • Bottom chamfer uses a spiral flute design (sizes larger than #3 or M2.5)

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The availability of the products described on this site, and the product descriptions, may vary from country to country. Consult your STANLEY Engineered Fastening Account Executive or your local distributor for specific product information.