Construction screw 8,0×320 mm (countersunk head) - yellow zinc plated, TORX 40

The 8.0×320 mm construction screw is designed for joints in load-bearing wooden structures where high strength and reliable assembly are required. It is made of hardened carbon steel and protected by a yellow electroplating coating with a thickness of 5-8 μm according to ISO 4042 (A2L, CR3+). This ensures corrosion resistance in common construction applications.

The screw has a recessed head with a diameter of 14.5 mm and a TORX 40 chuck, which enables precise guidance and safe torque transmission. Partial threads with a milling cutter in the middle of the shank reduce resistance when screwing.

The product complies with EN 14592:2008+A1:2012 and meets the requirements for use in load-bearing timber structures according to CPR 305/2011/EU.

The package contains 50 screws and a TORX 40 bit.

Technical parameters

• Dimension: 8,0×320 mm

• Material: hardened ASTM-SAE 10B21 steel

• Surface finish: yellow zinc 5-8 μm (ISO 4042 A2L, CR3+)

• Standard: EN 14592:2008+A1:2012

• Head: recessed, Ø 14,5 mm

• Clamping: TORX 40

• Thread: partial, with ribs and milling segment

• Certification: CE, DoP SEVTG001

• Packing: 50 pcs + bit

Selected features according to DoP SEVTG001 (Ø 8 mm)

• Characteristic bending moment My,k: 21.53 Nm

• Pull-out fax,k: 14.8 N/mm²

• Average pull-out force FAZ,max: 11 kN

• Strength of fhead,k: 16,6 N/mm²

• Average breaking force of head FKDZ,max: 5,07 kN

• Tensile strength ftens,k: 25,7 kN

• Torsional strength ftor,k: 29,6 Nm

Application

The screw is particularly suitable for:

• trusses, trusses and load-bearing timber structures,

• pergolas, gazebos and sheds,

• installation of beams and joints with higher loads.