Dual single, hi-lo diamond thread form with corrosion resistant, blue ruspert finish. Hex head with Slot for socket or screwdriver application.

Just drill through the part being fixed to the masonry, then drive the screw in. Dual angle thread with hi-lo threadform. Extra hard steel with chromate finish. Use 4mm pilot for 5.3mm screws and 5mm drill for 6.4mm screws.

Just drill through the part being fixed to the masonry, then drive the screw in. Dual angle thread with hi-lo threadform. Extra hard steel with chromate finish. Use 4mm pilot for 5.3mm screws and 5mm drill for 6.4mm screws.

Just drill through the part being fixed to the masonry, then drive the screw in. Dual angle thread with hi-lo threadform. Extra hard steel with chromate finish. Use 4mm pilot for 4.8mm screws and 5mm drill for 6.4mm screws.

Designed to meet the latest developments in MDF board. Tri-Lock threadform and shank incorporates the benefits of a single coarse thread with a twin thread start on the same screw. Spiral point breaks through the hard, dense surface, allowing the twin thread to engage. The twin thread is reduced to a single coarse thread, enabling high pull-out retention. Underhead ribs for self-countersinking, and Zinc and Yellow-passivated.

Designed to meet the latest developments in MDF board. Tri-Lock threadform and shank incorporates the benefits of a single coarse thread with a twin thread start on the same screw. Spiral point breaks through the hard, dense surface, allowing the twin thread to engage. The twin thread is reduced to a single coarse thread, enabling high pull-out retention. Underhead ribs for self-countersinking, and Zinc and Yellow-passivated.

Designed to meet the latest developments in MDF board. Tri-Lock threadform and shank incorporates the benefits of a single coarse thread with a twin thread start on the same screw. Spiral point breaks through the hard, dense surface, allowing the twin thread to engage. The twin thread is reduced to a single coarse thread, enabling high pull-out retention. Underhead ribs for self-countersinking, and Zinc and Yellow-passivated.

Designed to meet the latest developments in MDF board. Tri-Lock threadform and shank incorporates the benefits of a single coarse thread with a twin thread start on the same screw. Spiral point breaks through the hard, dense surface, allowing the twin thread to engage. The twin thread is reduced to a single coarse thread, enabling high pull-out retention. Underhead ribs for self-countersinking, and Zinc and Yellow-passivated.