Screws for rafter insulation WKPC-08225 (50)

Double-threaded screws with a cylinder head and a Torx socket for over-rafter insulation.

Screws designed for mounting over-rafter insulation to wooden substrates.

The most important parameters

• Model: WKPC-08225-B-(50)OP

• Size: 8 x 225 mm

• Maximum usable length: 125 mm

• Packaging: 50 pcs.

• Socket: TX-40

• Material: galvanized carbon steel

Original product of the renowned company KLIMAS Wkręt-Met ®

Features and benefits

1. Cylindrical head with TX socket

Allows for quick and invisible countersinking of the screw into the fastened element. The TX socket guarantees optimal torque transfer.

2. Thread under the head

Ensures optimal counterbatten fastening and allows the load to be transferred from the counterbatten through the screw to the rafters, bypassing the insulation. Protects the insulation from damage.

3. Countersinking cutter

Reduces the torque required for screwing by widening the hole in the fastened element.

4. Wax Coating

Thanks to the special wax coating applied during the manufacturing process, the screwdriving torque has been significantly reduced.

5. Double Thread

Additional coils on the tip facilitate screwdriving - they allow for faster "gripping" of wood with less pressure.

6. Milling Tip/Cutting Notches

Special milling tip shape, up to 20% less resistance during screwdriving, which extends the life of the battery and the tools themselves. Cutting notches on the thread cut the fibers of the wood structure during screwdriving.

7. High Torque

Enables screwdriving without pre-drilling in hard types of wood.

1. Wood solid,

2. Glued solid wood (CLT,KVH,BSH/GLT)

3. Laminated laminated timber (LVL)

1. Installation of soft over-rafter insulation (insulating materials with low compressive strength (σ(10%) < 50 kPa - EN 826))

2. Installation of insulation on the facade

3. Installation of hard over-rafter insulationInsulating material with high compressive strength (σ(10%) ≥ 50 kPa - EN 826)

4. Wooden structures.

• [ dw ] outer thread diameter: Ø 8.0 mm

• [ d1 ] inner thread diameter: Ø 5.4 mm

• [ ds ] diameter of the smooth part: Ø 5.8 mm

• [ Dw ] head diameter: Ø 10 mm

• [ Lw ] screw length: 225 mm

• [ Lg ] thread length: 100 mm

• [ L2 ] thread length under the head: 60 mm

• Maximum usable length: 125 mm

• Socket: TX-40

• Quantity in the package: 50 pcs.

• European Certificate ETA-18/0817 07/06/2023 - a guarantee of the highest quality. This European Standard specifies requirements and test methods for the materials, geometry, strength, stiffness and durability (i.e. corrosion protection) of fasteners used in load-bearing timber structures.

The screws we offer are of 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.

The screws do not require pre-drilling.

Screws KLIMAS - the most common choice of professionals

You will find a full range of screw sizes in our other auctions.

*the measuring tape is not included in the auction (it is only used for better presentation of the screws)

Size: (8x225 mm), Packaging: (50 pcs.) Model: WKPC Maximum usable length: 125 mm