The job
A guided driver for standardM6 star nuts in the named 1 and 1-1/8-inch systems.
Park Tool · Star-nut setter
Park Tool TNS-4 Guided Star Nut Setter
A guided driver for standardM6 star nuts in the named 1 and 1-1/8-inch systems.
$58.95Nov 7, 26, 01:00 AM · New York
Add to cart Price info
This is a monthly price snapshot supplied by Rainforest, not a live quote. Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.
Opens this product on Amazon. Check the selected offer, contents and current price there.
- Mechanism Driver with surrounding guide
- Named systems 1 and 1-1/8 in
- Nut receiver StandardM6 star-nut thread
Mechanism
Driver with surrounding guide
Choose the approved retention system
A star-nut setter and an expansion-plug tool serve different systems.
What this choice changes
A surrounding guide for the supported star-nut setup
The TNS-4 combines a steel driver with a surrounding guide for installing the supported star-fangled nut. The guide architecture is the useful difference from the simpler TNS-1 driver; both address the same retention-system operation, rather than different types of headset adjustment.
Park Tool lists 1 and 1-1/8-inch headset systems using standardM6 threaded star nuts. Confirm the actual fork’s permitted retention system first. The tool is not an expansion-plug installer, and a nominal steerer size does not establish permission to install a star nut in every material.
The exact TNS-4 page describes controlled setting depth without giving a numerical depth for this model. Do not choose it from the 15 mm figure stated for TNS-1. A star nut and hammer are not established as supplied; replacement set screw 822 is a separately identified service part.
Specifications & supplied details
| Detail | Specification |
|---|---|
| Model | TNS-4 |
| Mechanism | Driver with surrounding guide |
| Named systems | 1 and 1-1/8 in |
| Nut receiver | StandardM6 star-nut thread |
| Service part | Replacement set screw 822 |
| Supplied | Guided setter; nut/hammer not established |
Choose for your actual setup
Choose the approved retention system
A star-nut setter and an expansion-plug tool serve different systems.
Compare guide architecture
The surrounding guide is the feature to compare with TNS-1, not an assumed shared numerical depth.
Fit checks & limits
- No universal carbon-steerer permission or expansion-plug function.
- No numerical TNS-4 depth is imported from TNS-1.
Questions before you choose
Is it an expansion-plug installer?
No. Its stated role is the supportedM6 star-nut setup.
Does it have the same 15 mm depth as TNS-1?
A numerical depth is not established for this exact TNS-4 source. Do not transfer that specification between models.
Why choose it over TNS-1?
TNS-4 adds a surrounding guide architecture. Choose by the required approved setup; the underlying star-nut operation overlaps.
Guides for this choice
Alternatives to compare
Selected listing details, manufacturer information and source images were compared. No hands-on trial or universal fit is claimed. Product identifier: B000QSUWI6.