7.5 x 40 mm Masonry ScrewsIdeal for fixing uPVC and timber frames directly to masonry.

Flat Countersunk T30 Torx Head with 5 x Locking Ribs.Optimised thread design for lower installation torque.Deep High / Low Thread for High Pull-Out Resistance.Self-Drilling.Heat-Treated.Zinc Plated, Yellow PassivationSuitable for Both Domestic & Trade Use.