R-ONR-55/63 Self-drilling screws for fixing sandwich panels to steel construction up to 12 mm, zinc-flake 6.3/5.5x191 mm with washer A19 RAL 9006 - cardboard box - 100 pcs.

Highly effective corrosion protection is provided by a special zinc flake coating. The self-drilling tip's unique approach angle enables direct installation without predrilling, up to 12mm. A self-vulcanizing EPDM washer, resistant to both temperature and UV, ensures a proper seal by seating correctly on the outer cladding material. The thread's shape and height are optimized for use in sandwich panels and steel construction. An additional layer of coloured polyester coating, 45-50um thick, offers further corrosion resistance. Available in various colours to match all metal sheet variants, with UV stabilizers for long-lasting colour quality. Two types of threads are featured: one for steel structures, and an under-head thread to prevent panel dents and aid sealing. The screw's thread surface is hardened, and a high-quality anti-corrosion coating ensures 15 Kesternich cycles of resistance.

• Advanced Corrosion Protection: Special zinc flake coating for superior defense
• Direct Installation: Self-drilling tip allows no predrilling up to 12mm
• Durable Washer: Self-vulcanizing EPDM washer resists temperature and UV, ensures proper seal
• Versatile Design: Thread shape and height optimized for sandwich panels and steel construction
• Extra Corrosion Shield: Colored polyester coating (45-50um) for added protection
• Dual Threads: Two thread types prevent panel dents and enhance connection sealing
• Robust Thread Surface: Hardened thread surface with high-quality anti-corrosion coating (15 Kesternich cycles)
• Anti-Corrosion Defense: Special zinc flake coating for effective protection