Evolution Black Phosphate Self-Drilling Drywall Screw 25mm x 3.5mm (Pack of 1000) - DWSDZ25

IMPORTANT APPLICATION ADVICE: On rare occasions black phosphate screw coatings can react with some render types, which can damage the coating resulting in corrosion and staining. To reduce the risk of this happening Evolution recommends sealing the drywall screw heads with a PVA bonding solution before render is applied.

Specifications:

• Length: 25mm
• Thickness: 3.5mm
• Box Quantity: 1000
• Material: Metal
• Type: Self Drilling
• Tensile Strength: 7.3kN
• Shear Strength: 5.0kN
• Surface Hardness: 620.0HV
• Core Hardness: 470.0HV
• Ultimate Tensile: ISO 6892-1: 2009
• Ultimate Shear: MIL-STD-1312-13
• Pull Out (Withdrawal Force): EN 14566: 2009
• Pull Over: EN 14592: 2008
• Hardness: ISO 650 7-1: 2005
• Corrosion Resistance: EN ISO 9227: 2012
• Drilling Time Test: EN 14566: 2009
• Effective Thread Length: Fully Threaded