CNA carpentry joint nails 4.0x75mm (250)

Ring nails for carpentry joints

4x75 mm (250 pcs.)

The most important parameters

• Model: CNA

• Size: 4x75 mm

• Quantity: 250 pcs.

• Material: galvanized steel

Designed for fastening carpentry joints to wood.

Original product of the renowned company SIMPSON Strong-Tie ®

• Total length: 70 mm

• Thread length: 66 mm

• Thread diameter: 4.0 mm

• Head diameter: 7.0 mm

• Quantity in package: 250 pcs

1. Increased durability of the structure

Thanks to the use of carbon steel, our nails provide exceptional strength and stability of connections, which translates into longevity and reliability of the entire structure.

2. Widening under the head

The conical widening of the shank diameter under the nail head significantly reduces initial displacement when load appears. This ensures greater connection stability from the very first stages of assembly.

3. Excellent pull-out protection

The specially profiled rings of our nails significantly increase their pull-out resistance, which is crucial in places where connections are exposed to intense dynamic loads.

4. Corrosion protection

Electrolytic galvanizing with a layer thickness of at least 12 μm protects the nails from harmful atmospheric influences, which is particularly important in outdoor conditions.

5. Usage class 2

Characterized by material moisture corresponding to a temperature of 20°C and relative humidity of the surrounding air exceeding 85% only for a few weeks a year.

6. Service class 3

Corresponds to conditions causing wood moisture content higher than that corresponding to service class 2.

Application and installation method

The use of CNA nails (or CSA screws) is a necessary condition for achieving the full load-bearing capacity of the connection using Simpson Strong-Tie carpentry joints.

• ETA-04/0013 of 2019/11/12

This European Standard specifies requirements and test methods for materials, geometry, strength, stiffness and durability (i.e. corrosion protection) of fasteners used in load-bearing timber structures.

The products we offer are characterized by the highest quality and can be safely used in construction. We make every effort to ensure that the products delivered to our contractors are safe and adapted to specific tasks.

*Measuring cup not included.