Hex Flange Nuts - TOOGOO(R) 8mm Height M8 Thread Stainless Steel Serrated Hex Flange Nuts 10 Pcs Product Name : Hex Flange Nut;Fastener Type : Hex Serrated Flange Nut;Thread Diameter : M8/ 5/16" Thread Pitch : 1.25mm;Flange Diameter (d1) : 18mm/1";Width Across Corner Size (e) : 14mm/ 9/16" Width Across Flat Size (s) : 13mm/ 1/2";Nut Height (m) : 8mm/ 5/16" Material : 304 Stainless Steel;Color : Silver Tone