Fermacell Screws 3.9 x 40mm (1000/Box)

Fermacell Screws with a 3.9mm diameter and 40mm length, supplied in boxes of 1000. These high-performance self-drilling screws are designed specifically for fixing Fermacell Gypsum Fibre Boards to timber or metal subframes. Manufactured from hardened steel with a corrosion-resistant phosphate coating, they provide secure and durable fastening without the need for pre-drilling. The fine-thread design ensures high pull-out strength, tight board contact, and clean countersinking without surface damage. The 40mm length is suited to double-layer boards and thicker assemblies.