FIXINGS & FASTENERS 207 www.perrytrade.co.uk +44 (0)1384 414001 sales@perrytrade.co.uk Fixings & Fasteners Guide Aluminium Black Organic Green Sheradised Yellow Passivated Zinc Plated Stainless Steel Galvanised Bright Self Colour Corrosion Resistance Rating Plating & Finishes Head Types Recess Style Gauge / Diameter CORROSIONRESISTANCE UNTREATED 5 1 2 4 3 5 1 2 4 3 CORROSIONRESISTANCE MODERATE 5 1 2 4 3 CORROSIONRESISTANCE HIGH CORROSIONRESISTANCE SUPERIOR 5 1 2 4 3 CORROSIONRESISTANCE ULTIMATE 5 1 2 4 3 HEX COUNTERSUNK POZI TORX Standard recess for woodscrews, chipboard screws etc. The gauge of the screw is determined by the size of the outside thread diameter. High performance recess. For a flush finish. Positive hex drive. Metric (mm) Imperial (Inch) 3.17 (3.0) 1/8” 7.94 (8.0) 5/16” 9.52 (10.0) 3/8” 12.70 (12.0) 1/2” 19.05 (19.0) 3/4” 25.40 (25.0) 1” 31.75 (32.0) 1 1/4” 38.10 (38.0) 1 1/2” 45.45 (45.0) 1 3/4” 50.80 (50.0) 2” 57.15 (57.0) 2 1/4” 63.50 (63.0) 2 1/2” 69.85 (70.0) 2 3/4” 76.20 (75.0) 3” 101.60 (100.0) 4” 127.00 (125.0) 5” 152.40 (150.0) 6” 177.80 (175.0) 7” 203.20 (200.0) 8” 228.60 (230.0) 9” 254.00 (250.0) 10” Gauge Metric Diameter (mm) approx. Pilot Hole Size (mm) Masonry Rawl Plug Hole Size for Rawl Plug (mm) 3 2.5 1 Yellow 5 4 3 1.5 Yellow 5 6 3.5 2 Red 6 8 4 2.5 Red (or Brown) 6 (or 7) 10 5 3 Brown 7 12 5.5 3.5 Brown 7 14 6.5 4 Blue 10 Thread Length
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