Join metal parts, with a nut or in a tapped hole, so they can be taken apart.

Torx keys with plastic handle, Fervi C855/T40
What it is
The hex key is an L-shaped or T-shaped male key, hexagonal or Torx, that fits into the recess in the screw head to tighten or loosen it.
A hex key is an L- or T-shaped male key, hexagonal or Torx, that fits into the recess in the screw head to tighten or loosen it.
What it is for
Used for repetitive screwdriving into wood, metal and plasterboard, where torque and consistency matter, in mechanical maintenance of machinery and plant, during scheduled shutdowns or breakdowns and for tightening nuts and bolts where torque must be accurate and repeatable.
How to use it
Choose the exact size and profile of the recess and insert the key fully so as not to damage the head. To break loose or tighten, put the short arm in the screw and lever on the long arm; for fast driving or awkward spots, use the long arm or the ball end. Do not extend the leverage with tubes, and replace the key when its edges are rounded.
Where it is used
- Building services
- Mechanical engineering industry
- Mechanical workshops
Who it is for
Designed for electricians, industrial maintenance technicians and mechanics.
Related products
- Torx keys with plastic handle, Fervi C855/T50
- Torx keys with plastic handle, Fervi C855/T30
- Long bi-hex socket, Fervi BN4P3L027A — from the category Hand Tightening Tools
- Diamond head screw FCS Fischer — from the category Bolts and Metric Screws
- Torx bits Fervi — from the category Bits
- Browse the whole category: Hex Keys (Allen Keys)
Before you order
Tell us the quantities you need and the intended use: if there is a more suitable version, or an equivalent available sooner, we will let you know.
For prices and availability, request a quote from AMES Srl: we will reply with our quotation, delivery times and, where needed, an equivalent technical alternative.
The perfect setup for this job
Everything you need in one place, from functionality to safety.
For the job
Lubricate, free up and protect against rust when sprayed directly onto the part.
Keep tools and small parts organised and secure during transport.
Tighten and loosen nuts and bolts with the open end or the polygonal ring end.
For safety
Protect hands from abrasion, dirt, liquids and minor cuts while keeping a firm grip.





