22BB4308 up for sale is a new hex nut made of steel , covered under NSN 5310-00-501-3623 and part numbers 5013623 and 500250 , also FN Herstal number B013623 and Manroy engineering A10434 , new in sealed factory bag , comes as shown in tne photos , see photos for a view of the public owned specifications , also see our store we add more new items weekly, thank you Rwk