V-tech VT 843, Loctite 243 Blue, and Everbuild GP Blue to Secure Screw in Watch Pins and Bracelet Screws

SKU Code: 1370534

V-tech VT 843, Loctite 243 Blue, and Everbuild GP Blue are all medium-strength, self-curing thread-locking adhesives designed for applications where secure fixing is essential but future disassembly is still required.

These fast-acting thread lockers are ideal for watches  pins, rotors and bracelets, helping to them from gradually loosening due to vibration and daily wear. They also seal the threads, offering protection against moisture ingress and corrosion, while remaining easy to remove using standard watchmaking tools or precision screwdrivers.

Beyond horology, these adhesives are widely used in precision instruments such as cockpit clocks, as well as in electronic devices including computers, smartphones and robot vacuum cleaners where vibration can otherwise cause fasteners to work loose over time.

Because availability can vary, we normally stock all three products and supply whichever is currently in stock. In practical terms, there is no functional difference between them—they are all designed to perform exactly the same task to the same standard. 

Key Features

• Medium strength, allowing easy disassembly when required
• Gap-filling capability up to 0.25 mm
• Quick initial bond time of 5–10 minutes

Important Note
While it is sometimes possible for bracelet screws or screw-in lug pins to remain secure without thread locker if tightened excessively, our watchmakers strongly advise against relying on this. If a pin works loose, the watch can detach from the wrist, potentially resulting in serious and costly damage—or, in extreme cases, a watch that is beyond economical repair. A small drop of thread locker is cheap insurance.

Worth noting that this is a product you’ll often find in most automotive stores, tool shops, and even many motorcycle dealerships. The catch isn’t availability—it’s quantity.

For watch work, you only need around 5–10 mL, which is enough for multiple jobs over a long period. However, motorcycle and tool shops typically sell it in 50 mL or larger bottles. That’s not only unnecessarily expensive, but also massively more than you’d ever need for watches—or even clocks.

Europe, UK, and Rest of World

Tracked Mail:

• Europe: €11.75 / £9.99 / US$12.95
• UK: £7.95 / €9.50 / US$10.50
• Rest of World: US$22.75 / €20.50 / £17.50

Express Courier (UPS or FedEx):

• Europe: €23.50 / £19.99 / US$25.95
• UK (UPS/DPD):  £12.95 / €15.25 / US$16.95
• Rest of World: US$45.50 / €41.25 / £34.95

Note: The exact shipping cost may vary slightly depending on the weight and dimensions, but it will only differ by a small amount and will be shown at checkout. The above rates cover approximately 85% of parcels.

For more details click here

If you are not satisfied with your purchase or it does not meet your requirements, you can return it within 14 days of receipt. The item must be in its original condition and packaging. To return a watch, please notify us using the form at the link below.

Please note that the watch, strap, or other purchased item must be in new and resalable condition. The returns policy will not apply if the item has been worn, the plastic protectors on the dial and/or caseback have been removed, or if there are other signs of usage, such as a worn strap. Essentially, the goods should not have been used beyond what would be expected if you had handled or examined an item in a shop before purchase.

To request a return authorization number, please visit this link.

Read our full returns policy here