Contact one of the online dealers and price out a reman axle. Get the axle seal too as others mentioned.
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If you intend to reboot that joint, then you'll have to disassemble and inspect the parts. Making sure they're in condition for reuse, like no scoring, heat discoloration and other damage.
But for $50 driver side or $65 passenger side, I'd consider getting a new aftermarket Cardone axle and be done with it. Lifetime warranty. Be aware with rockauto buyer pays return shipping just about on all things. I think they pay to ship out warranty replacements.
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The axle nut will have to be torqued to spec, with the wheel off the ground. A helper on the brakes helps. This is for the longevity of the wheel bearing.