Feb 23, 2018 2500 Series Flanges Pipe Diameter# of StudsStud DiameterStud LengthNut Size 1″47/8″5-1/2″1-7/16″ 2″81″7″1-5/8″ 3″81-1/4″8-3/4″2″ 4″81-1/2″10″2-3/8″ 6″82″13-1/2″3-1/8″ 8″122″15″3-1/8″ 10″122-1/2″19-1/4″3-7/8″ 12″122-3/4″21-1/4″4-1/4″ by PipeAdmin