Originally Posted by Blimphauler
Let's try this again! Axles replacement question: I've got a '72 dual-axle trailer, and recently received my new axles from Andy. Any idea what the recommended torque is for the axle bolts?
These bolts are in single shear; they're 5/8" grade 8 fine thread: far, far stronger than the plate to which the axles are bolted. Since the loading direction is such that the bolt threads are never subject to any dynamic load, the torque values are not critical - they just need to be good and tight.
Absent official specs, I'd oil the threads and torque to 100 ft-lbs, or as tight as you can get them with a 12" wrench absent a proper torque wrench. Torque values w/ lockwashers are always approximate - but they're required in this application as the transverse loading does tend to loosen things.