The Park Tool TNS-1 is the star nut setter for threadless headsets: it installs the star-fangled nut inside the fork steerer tube precisely and repeatably. It is compatible with 1" and 1 1/8" headset systems that use a standard M6 threaded star-fangled nut.
Operation is simple: thread the nut onto the TNS-1, insert the tool into the steerer tube and drive it in with a hammer. The setter places the star nut at a depth of 15 mm and keeps it straight during installation, preventing it from tilting in the steerer. The long handle helps prevent pinched fingers.
How to use the Park Tool TNS-1 star nut setter
- Thread the M6 star nut onto the TNS-1.
- Insert the tool into the fork steerer tube, keeping it aligned.
- Strike the handle with a hammer until the star nut is fully set.
- Unthread the TNS-1: the star nut stays straight at a depth of 15 mm.
Why choose Park Tool TNS-1
- Fixed installation depth of 15 mm, always the same.
- Guides the star nut and keeps it straight in the steerer.
- Long handle keeps your hands away from the striking point.
- Compatible with 1" and 1 1/8" steerers with standard M6 star nut.
- Replaceable set screw (Park Tool part #822).
For clean, precise work on threadless forks and headsets, the Park Tool TNS-1 star nut setter is the right tool to keep at the workbench.
TECHNICAL SPECIFICATIONS
General
- Code: TNS-1
- Brand: Park Tool
- Type: Star-fangled nut setter for threadless headsets
- Installation depth: 15 mm
- Spare part: Replaceable set screw, Park Tool part #822
Compatibility
- Headsets: Threadless 1" and 1 1/8"
- Star nut: Standard M6 thread
The Park Tool TNS-1 is the star nut setter for threadless headsets: it installs the star-fangled nut inside the fork steerer tube precisely and repeatably. It is compatible with 1" and 1 1/8" headset systems that use a standard M6 threaded star-fangled nut.
Operation is simple: thread the nut onto the TNS-1, insert the tool into the steerer tube and drive it in with a hammer. The setter places the star nut at a depth of 15 mm and keeps it straight during installation, preventing it from tilting in the steerer. The long handle helps prevent pinched fingers.
How to use the Park Tool TNS-1 star nut setter
- Thread the M6 star nut onto the TNS-1.
- Insert the tool into the fork steerer tube, keeping it aligned.
- Strike the handle with a hammer until the star nut is fully set.
- Unthread the TNS-1: the star nut stays straight at a depth of 15 mm.
Why choose Park Tool TNS-1
- Fixed installation depth of 15 mm, always the same.
- Guides the star nut and keeps it straight in the steerer.
- Long handle keeps your hands away from the striking point.
- Compatible with 1" and 1 1/8" steerers with standard M6 star nut.
- Replaceable set screw (Park Tool part #822).
For clean, precise work on threadless forks and headsets, the Park Tool TNS-1 star nut setter is the right tool to keep at the workbench.
TECHNICAL SPECIFICATIONS
General
- Code: TNS-1
- Brand: Park Tool
- Type: Star-fangled nut setter for threadless headsets
- Installation depth: 15 mm
- Spare part: Replaceable set screw, Park Tool part #822
Compatibility
- Headsets: Threadless 1" and 1 1/8"
- Star nut: Standard M6 thread
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