1/4 NPT Weld On Bung Female Steel Nut Plug Threaded Weldable Fitting Adapte Description: 1/4" ALUMINUM NPT FEMALE WELD ON FLANGE FITTING BUNG W/ LOW PROFILE Constructed 100% out of 6061-T6 aircraft aluminum - CNC Machined - Total thickness is .425" Outside diameter is 1.00" Flange thickness is .280" insertion diameter is .730" You need to drill a 3/4" hole for it to fit before you weld it in place. AN Size:1/4" NPT High quality, Very well made Package Includes: 1 piece Weld on Bung Fitting Sensor Adapter Note: *No installation Tool & No instruction is Included, Professional Installation is Recommended* Due to light and screen difference, the item's color may be slightly different from the pictures. Please allow 1-5mm deviation due to manual measurement. THANK YOU FOR SHOPPING WITH US! Have a nice day _x000D_