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This is a genuine Bergeon 7965-140 stainless steel dynamometric screwdriver, a Swiss-made precision tool designed for use with removable torque drums (sold separately) from Bergeon’s TorkSpeed series. Featuring a 1.40mm blade width (grey colour code) and a stainless steel shaft with a specialized knurled profile for enhanced grip, it can also be used as a standard screwdriver without the torque drum .
The self-lubricating synthetic head ensures smooth rotation, while the hardened steel blade (54 HRC) provides lasting durability for professional watchmakers .
Torque Control (with optional drum) – Compatible with TorkSpeed torque drums (sold separately) for preset torque limiting, preventing over‑tightening.
Standard Screwdriver Use – Can be used as a conventional precision screwdriver without the torque drum.
1.40mm Hardened Blade – 54 HRC, durable, fits common watch screws.
Stainless Steel Knurled Shaft – Enhanced grip, stable operation.
Self‑Lubricating Synthetic Head – POM material, smooth rotation, no extra lubrication needed.
| Parameter | Details |
|---|---|
| Model | Bergeon 7965-140 |
| Type | Dynamometric (torque) screwdriver |
| Blade Width | 1.40 mm (grey colour code) |
| Blade Hardness | 54 HRC (hardened steel) |
| Shaft Material | Stainless steel with knurling |
| Head Material | Self‑lubricating synthetic (POM) |
| Torque Control | Requires TorkSpeed torque drum (sold separately) |
| Origin | Switzerland |
| Condition | Brand new, genuine |
Watch repair screws requiring precise torque control (e.g., bridge screws, balance bridge screws)
Use with torque drum to prevent thread or brittle part damage
Also functions as a daily precision screwdriver for most movement screws
Professional watch workshops, brand service centers
1. Is this a genuine Bergeon screwdriver?
Yes. It is a Swiss Bergeon factory-original model 7965-140, brand new.
2. Is the torque drum included?
No. The torque drum (TorkSpeed series) is sold separately. This screwdriver can be used as a standard screwdriver without the drum.
3. How do I attach the torque drum?
Insert the drum into the rear of the handle – tool‑free. Refer to Bergeon TorkSpeed instructions.
4. Is the blade replaceable?
This model has a fixed blade, not replaceable. For replaceable blades, see other Bergeon 7965 variants.
5. How should I maintain the screwdriver?
Wipe clean after use to prevent oil buildup. The self‑lubricating head needs no oiling. Store dry.
Fast worldwide shipping within 3 business days.
Competitive pricing on Seiko/Hattori calibers.
3,000+ watch movements and parts in stock.
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