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

Metric TCB screw with nut Unifix
Also known as: metric bolt, machine screw
Key features
- Head diameter5,6, 8, 9,5, 12
- DrivePH1 / CH5,5, PH2 / CH7, PH2 / CH8, PH3 / CH10
- Screw diameter mm x lengthM3x10, M3x16, M3x20, M4x10, M4x16, M4x20, M4x25, M4x30, M4x40, M5x10, M5x16, M5x20, M5x25, M5x30, M…
- L thread9, 15, 19, 8,6, 14,6, 18,6, 23,6, 28,6, 38,6, 8,4, 14,4, 18,4, 23,4, 28,4, 38,4, 48,4, 14, 18, 23…
What it is
The Unifix TCB metric screw with nut (code 1046-3-10-01 and variants) is the reliable solution for precise mechanical fixings in industrial, building and maintenance settings. Designed to ensure stability and strength, it suits assembly needs where the integrity of the connection is essential.
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
- Head diameter: 5,6, 8, 9,5, 12
- Drive: PH1 / CH5,5, PH2 / CH7, PH2 / CH8, PH3 / CH10
Who it is for
Designed for metal fabricators, industrial maintenance technicians and mechanics.
Related products
- Metric TE screw with nut and washer Unifix
- A2 stainless steel screw class 70 Unifix
- Tall dome nut, raw brass, Unifix — from the category Hex Nuts
- Serrated washer Unifix — from the category Flat Washers
- Combination wrench, series B01 Unifix — 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
| Head diameter | 5,6, 8, 9,5, 12 |
|---|---|
| Drive | PH1 / CH5,5, PH2 / CH7, PH2 / CH8, PH3 / CH10 |
| Screw diameter mm x length | M3x10, M3x16, M3x20, M4x10, M4x16, M4x20, M4x25, M4x30, M4x40, M5x10, M5x16, M5x20, M5x25, M5x30, M… |
| L thread | 9, 15, 19, 8,6, 14,6, 18,6, 23,6, 28,6, 38,6, 8,4, 14,4, 18,4, 23,4, 28,4, 38,4, 48,4, 14, 18, 23… |
The perfect setup for this job
Everything you need in one place, from functionality to safety.
For the job
Tighten and loosen nuts and bolts with the open end or the polygonal ring end.
Drive and remove screws with a hex or Torx recess, even in tight spaces.
Tighten and loosen hex nuts and screws of different sizes with a single ratchet.




