enroberts

Hi. Brand new member here. I have a 1997 Silverado 1500 4x4. The steering box needed to be replaced but when I removed the old one the pitman arm nut was not on the steering box. I cannot for the life of me find the size of the nut so I can get a new one. I've looked in a couple stores for one but nothing fits. Does anyone know the specs of the nut for my steering box output shaft (pitman)? Thanks!