Sapim Self Locking Polyax Aluminum Nipples

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Sapim SILS(Sapim Integrated Locking System) Polyax aluminum nipples have a special thread system to prevent loosening under extreme vibration. A SILS nipple uses a deformed thread as a locking mechanism that does not degrade over time. This design allows wheels to be trued or re-tensioned with minimal hassle.

Aluminum nipples have about one-third the mass of a brass nipple for weight savings at the rim/spoke interface.

Wheelbuilder does not recommend using alloy nipples in wet or salty environments due to their limited corrosion resistance.

Technical Information:

  • Weight: 32 nipples weigh 12.2g (14mm length); 0.38g / nipple
  • Material: Aluminum
  • Color: Silver 
  • Length: 14mm
  • Thread gauge: 2.0mm(14g)
  • Wrench interface: standard 0.127" (3.23mm) across flats


  • Minimum order quantity is 20 pieces (price is per nipple).

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