Product information:
20 x 5/16 inch-18 stainless steel rivet nut.
Thread spacing: 5/16 ''-18,5/16-18unc.
Body diameter: 0.4 inches, application drilling size: 0.4-0.4 inches.
Head diameter.: 1.5cm/head height: 0.07cm.
Total length: 0.75 inches (about 1.8cm),/grip range: 0.00-0.10 inches (about 0.1-0.3cm).