uxcell 25PCS M8 Thread Diameter Stainless Steel Serrated Hex Flange Locknuts Product Name : Hex Flange Nut;Fastener Type : Hex Serrated Flange Nut;Thread Diameter : M8/0.31" Thread Pitch : 0.5mm;Flange Diameter (d1) : 17.5mm/0.68";Width Across Corner Size (e) : 14mm/0.55" Width Across Flat Size (s) : 13mm/0.51";Nut Height (m) : 8mm/0.31" Material : Stainless Steel;Color : Silver Tone Net Weight : 173g;Package : 25pcs x Hex FlangeNut