Timco Stainless Steel Pan Head Self-Drilling Window Screws PH2 (131SS)

Securing heavy steel friction stays, lock keeps, and hinges into metal-reinforced PVCu frames requires a fastener that can drill through steel without snapping while resisting weather-induced corrosion. Standard carbon steel screws rust over time, while softer austenitic stainless steel can shear under high drilling torque. Timco Martensitic Stainless Steel Pan Window Screws (131SS) bridge the gap. Combining the drill hardened strength of 410-grade stainless steel with a Silver Organic coating and a high-clamping pan head, they drill, tap, and clamp steel hardware into reinforced profiles in a single swift operation.

410 Martensitic Stainless Steel Strength

Standard A2/A4 stainless steel screws are too soft to drill through hard steel reinforcement, often snapping off during installation. Grade 410 martensitic stainless steel is heat-treatable to exceptional hardness. This gives you the strength needed to self-drill and thread directly into internal steel reinforcement bars without shearing or burning out the drill point.

Dual-Layer Silver Organic Coating

Harsh weather, urban pollution, and industrial atmospheres accelerate corrosion on standard fasteners. The Silver Organic finish adds a resilient barrier coating over the stainless steel body. This elevates the fixing to Corrosion Rating 3, preventing red rust, protecting aesthetics, and extending frame lifespan in urban and industrial environments.

High-Clamping Pan Head Design

Countersunk screws can distort thin metal hinge plates or pull through flat hardware brackets under heavy clamp loads. The wide, flat underside of the pan head distributes clamping pressure evenly over the hardware face. This locks steel brackets and friction stay tracks tightly against the PVCu profile without slipping or crushing the hardware.

Self-Drilling Tek Point & Self-Tapping Thread

Pre-drilling pilot holes through both PVCu outer walls and internal steel reinforcing channels slows down fabrication and wears out drill bits. The precision self-drilling tip cuts through the plastic wall and bores through the steel reinforcement bar in seconds. The self-tapping thread immediately forms strong machine threads in the steel, securing a vibration-resistant anchor without pre-drilling.