350861 * 3-1/8 EIA Flange “Top Hat”, 1/8″ NPT Brass Plug, Hardware Kit & O-Ring

350861 * 3-1/8 EIA Flange “Top Hat”, 1/8″ NPT Brass Plug, Hardware Kit & O-Ring

350556A * 3-1/8″ EIA Field Flange (Unflanged Adapter), No Solder Required