Complete the fixing when screwed onto bolts, screws and threaded rods.

White zinc-plated screw class 8.8 Unifix
Key features
- DriveEI3, EI4, EI5, EI6, EI8
- Head diameter7, 8,5, 10, 13, 16
- L thread7,9, 13,9, 17,9, 22,9, 20, 7,6, 13,6, 17,6, 23,6, 22, 7, 9, 13, 17, 27, 24, 12, 16, 21, 26, 28, 15.…
- Screw diameter mm x lengthM4x10, M4x16, M4x20, M4x25, M4x30, M4x40, M5x10, M5x16, M5x20, M5x25, M5x30, M5x40, M5x50, M5x60, M…
What it is
The white zinc-plated TCCEI Class 8.8 metric screw (code 0084-04-10-01) by Unifix is the professional solution for high-strength fixings in industrial and mechanical settings. Designed for applications that require precision and durability, this screw suits sectors where hold and stability are critical.
Metric fasteners include metric-thread screws and bolts, spacers and small parts such as split pins, for joining parts with a nut or into a tapped hole.
What it is for
Used for assembling steel structures, in steel fabrication, from cutting to assembly and for mechanical fixing of structures and components to walls, ceilings and floors.
How to use it
Choose diameter, length, property class and material, zinc-plated or stainless, according to the joint and the environment. Insert the screw into the clearance or tapped hole, add the washer and tighten the nut with a spanner of the correct size, without exceeding the specified torque. Insert split pins through the hole in the pin or bolt and bend them over to stop the nut from working loose.
Where it is used
- Mechanical engineering industry
- Mechanical workshops
Technical data
- Drive: EI3, EI4, EI5, EI6, EI8
- Head diameter: 7, 8,5, 10, 13, 16
Who it is for
Designed for metal fabricators, industrial maintenance technicians and mechanics.
Related products
- Star knob with blind threaded hole Unifix
- Star knob with threaded insert Unifix
- Flanged nut Unifix — from the category Hex Nuts
- Flat washer, galvanised, white, Unifix — from the category Flat Washers
- Set of polished chrome combination spanners Fervi 0199P — from the category Combination Spanners
- Browse the whole category: Bolts and Metric Screws
Before you order
In your request, please state the diameter and the quantities required, so we can give you the right quotation first time.
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.
Specifications 4
| Drive | EI3, EI4, EI5, EI6, EI8 |
|---|---|
| Head diameter | 7, 8,5, 10, 13, 16 |
| L thread | 7,9, 13,9, 17,9, 22,9, 20, 7,6, 13,6, 17,6, 23,6, 22, 7, 9, 13, 17, 27, 24, 12, 16, 21, 26, 28, 15.… |
| Screw diameter mm x length | M4x10, M4x16, M4x20, M4x25, M4x30, M4x40, M5x10, M5x16, M5x20, M5x25, M5x30, M5x40, M5x50, M5x60, M… |
The perfect setup for this job
Everything you need in one place, from functionality to safety.
For the job
Spread the load under nuts and screws and stop the fixing coming loose.
Tighten and loosen nuts and bolts with the open end or the polygonal ring end.
Tighten and loosen hex nuts and screws of different sizes with a single ratchet.




