JEST Self-Tapping Screw for Gypsum Fiber Board, 3.9 × 25 mm (600 pcs)

Professional self-tapping screw for gypsum fiber board (GVL) designed for fastening gypsum fiber boards to wooden battens and metal profiles up to 0.7 mm thick without pre-drilling. The Hi-Lo thread ensures fast penetration, strong holding power, and secure fastening, while the hardened steel construction with a black phosphate coating provides reliable corrosion resistance in dry indoor environments.

🏷️ Product type: gypsum fiber board screw

📏 Size: 3.9 × 25 mm

🧱 Material: hardened steel

🛡️ Finish: black phosphate

🔩 Head type: bugle countersunk head

🌀 Drive type: Phillips (PH2)

📦 Packaging: 600 pcs

✨ Features: Hi-Lo thread, sharp point, flush countersunk installation, high pull-out resistance, installation without pre-drilling

🛠️ Application: fastening gypsum fiber boards (GVL/Fermacell) to wooden frames and metal profiles in drywall construction