The Park Tool TNS-1 Threadless Nut Setter, click to enlarge
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Item # TNS-1

/ Tools / Frame & Fork / Headset

Threadless Nut Setter

The TNS-1 is used to install star-fangled nuts found on threadless headsets. Thread the nut onto the TNS-1, insert into the steering column, and drive it in with a hammer. Sets the star-fangled nut to 15 mm and keeps it straight. Long handle helps prevent pinched fingers.

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TNS-1 Features

  • Compatible with 1" and 1 1/8" headset systems that use a standard M6 threaded star-fangled nut
  • Replaceable set screw — part #822


Parts & Accessories


Replacement Parts