MDF-TITEandreg; Screws 3.9 x 40mm Pack of 200

Designed to meet the latest developments in MDF board. Tri-Lock threadform and shank incorporates th

MDF-TITEandreg; Screws 3.9 x 40mm Pack of 200

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.

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