lindab | fastening materials Steel screw with sharp U51 U52 U55 tip Dimensions Dim Length Sheet t capacity Code mm mm # × mm Material U51 4,2 9,5 2 × 0,9 FZB U52 4,2 13 2 × 0,9 FZB U55 4,2 25 2 × 0,9 FZB Description For assembling of ventilation ducts and thin sheets. For applications where high airtightness are required. Head: Hexagon ¼" + Robertson R2. Surface finish: electro zink plated. Ordering example U51 Product Dimension Length 4,2 9,5 Lindab reserves the right to make changes without prior notice 1 2021-12-13
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