The Park Tool TNS-15 Threadless Nut Setter, click to enlarge

Item # TNS-15

(discontinued) / Tools / Frame & Fork / Headset

Threadless Nut Setter

The Threadless Nut Setter is used to install star-fangled nuts found on threadless headset systems. Thread the nut onto the TNS-15, insert into the fork stack, and tap it in with a hammer. Sets the starfangled nut to 15mm and keeps it straight. Long handle helps prevent pinched fingers.

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TNS-15 Features

  • Compatible with 1 1/4" and 1.5" threadless headset systems
  • Fits star-fangled nuts with an M6 threaded nut. Not compatible with M10 threaded star-fangled nuts


Parts & Accessories


Replacement Parts