A traditional nut used for all bolting and fastening applications. Features Plated in Trivalent Chromium (Cr3) Zinc Standard metric thread Please note boxed are Class 8 to DIN 267-4 Specification Corrosion Rating (1-5) - 1- Clean, dry & low humidity environments Size (mm) - M20 Finish - Zinc & Clear Cr3 Nut Type - Hex Full Thread Ø (mm) - M20 Pack Qty - 50 Salt Spray Resistance (Hrs) Tested to BS EN 9227 - 24 Socket Size (mm) - 30 DIN - DIN 934, DIN 267-4 Thread Type - Metric Pack Type - Box H (mm) 16.0 Standard Equipment 1x Box of TIMCO M20 Zinc Hex Full Nuts Qty 50