Norhage Self-Drilling Screws – 5.5 × 50 mm

Norhage self-drilling screws, 5.5 × 50 mm, are designed for fastening steel profiles in greenhouse construction and outdoor metal structures. They are manufactured from hardened C1022 steel, combining high hardness with excellent drilling performance.

The hexagonal washer head, manufactured in accordance with DIN 7504K, allows high torque to be applied for secure and reliable fastening. The silver Ruspert® coating provides excellent corrosion protection and has passed a 1,000-hour salt spray test, ensuring long-lasting resistance to rust. No pre-drilling is required when fastening thin steel sheets.

Key Benefits

• Hardened C1022 steel – provides excellent drilling performance and strength.
• DIN 7504K hexagonal washer head – allows high installation torque and secure fastening.
• Ruspert® coating – provides corrosion resistance, proven by a 1,000-hour salt spray test.
• Self-drilling tip – eliminates the need for pre-drilling in thin steel.
• High clamping force – ensures strong and reliable fastening.

Technical Specifications

• Dimensions: 5.5 × 50 mm
• Material: Hardened C1022 steel
• Standard: DIN 7504K
• Coating: Silver Ruspert®
• Corrosion resistance: 1,000-hour salt spray test
• Head type: Hexagonal washer head
• Tip type: Self-drilling
• Applications: Greenhouses, roofing and steel structures
• Packaging: 50 pcs.