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

Tall dome nut, raw brass, Unifix
Key features
- Height8, 10, 12, 15, 18, 22
- DiameterM4, M5, M6, M8, M10, M12
- DriveCH7, CH8, CH10, CH13, CH17, CH19
What it is
The Unifix raw brass tall acorn nut (code 0350-4-01) is the ideal solution for secure fixing in applications where space is limited or a clean, neat profile is required. Designed for professionals in building, mechanical engineering and plant installation, this fastener component ensures grip and strength in demanding settings, without the need for a lock nut.
The dome nut, also known as a cap nut, is a nut closed at one end that covers and protects the threaded tip of the screw or rod and finishes off the fixing.
What it is for
Used for assembling steel structures, for mechanical fixing of structures and components to walls, ceilings and floors and for erecting steelwork and structural carpentry.
How to use it
Screw it onto the screw or stud of the same thread, after the washer, and tighten with a spanner or socket. The threaded part must not touch the bottom of the cap: it is the nut that clamps the part. Use it where the protruding end is dangerous or unsightly.
Where it is used
- Mechanical engineering industry
- Mechanical workshops
Technical data
- Height: 8, 10, 12, 15, 18, 22
- Diameter: M4, M5, M6, M8, M10, M12
- Drive: CH7, CH8, CH10, CH13, CH17, CH19
Who it is for
Designed for metal fabricators, industrial maintenance technicians and mechanics.
Related products
- Dome nut raw brass Unifix
- Self-locking nut white zinc-plated Class 8 Unifix
- Threaded rod, steel, class 8.8, Unifix — from the category Threaded Rods
- Flat washer, galvanised, white, Unifix — from the category Flat Washers
- Knob with threaded insert, blind hole, Unifix — from the category Bolts and Metric Screws
- Browse the whole category: Hex Nuts
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 3
| Height | 8, 10, 12, 15, 18, 22 |
|---|---|
| Diameter | M4, M5, M6, M8, M10, M12 |
| Drive | CH7, CH8, CH10, CH13, CH17, CH19 |
Compare with similar models
Technical data declared by the manufacturers. An empty cell means the figure is not declared.
| Feature |
This model
Tall dome nut, raw brass, Unifix
|
Dome nut stainless steel A2 AISI 304 Cl.70 Unifix
|
Dome nut white zinc-plated Class 8 Unifix
|
Dome nut white zinc-plated Class 8 M30 Unifix
|
|---|---|---|---|---|
| Brand | Unifix | Unifix | Unifix | Unifix |
| Height | 8, 10, 12, 15, 18, 22 | 8, 10, 12, 15, 18, 22, 25, 28 | 8, 10, 12, 15, 18, 22, 25, 28, 32, 34, 39, 42 | 52 |
| Diameter | M4, M5, M6, M8, M10, M12 | M4, M5, M6, M8, M10, M12, M14, M16 | M4, M5, M6, M8, M10, M12, M14, M16, M18, M20, M22, M24 | M30 |
| Drive | CH7, CH8, CH10, CH13, CH17, CH19 | CH7, CH8, CH10, CH13, CH17, CH19, CH22, CH24 | CH7, CH8, CH10, CH13, CH17, CH19, CH22, CH24, CH27, CH30, CH32, CH36 | CH46 |
| View product → | View product → | View product → |
The perfect setup for this job
Everything you need in one place, from functionality to safety.
For the job
Make tie rods, hangers and chemical anchor fixings together with nuts, washers and connectors.
Tighten and loosen nuts and bolts with the open end or the polygonal ring end.







