Square Drive Self Drilling Screws

• Features the Positive Square Drive – with increased torque and less slippage than Phillips Drive
• Wings create a clearance hole thru timber and drilling tip will drill thru steel purlins up to 2.6mm
• Available in Galvanised, Bi-metal and 550 Stainless Steel
• 6 Nibs under head for effective self-embedment

NOTE: Galvanised Self drillers are not suitable for fixing Treated lumber, especially Treated Pine Decking in coastal environments. For these applications we recommend the use of Stainless Steel fasteners.