Bolt Lubrication, Ant Seize Compounds

skpjose

I'm bolting some equipment to a steel beam with grade 8, 3/4" fine thread bolts. Several have nuts and several bolt into threaded studs. Any recommendations for lubrication or anti seize compounds. How do you de-rate the torque, dry vs. lubricated. Found special anti seize compounds and seen articles using white grease and various weights of motor oil. Specific application is bolting shock absorbers to a frame. Any suggestions.

Tnx

Joe

philadelphia

Anti sieze is nice if you plan on removeing them later and they live in a corrove enviroment..Id look into a company called arp..

The have a lube used for torquing cylinder head bolts..

Another route that i use is to use some tap majic..Usually that works great and i torque with that..(the few times where i have to use a T wrench).When i was in industrial maintenance we kept tap majic around for lube on mills and lathes as well as tapping..Started using it like wd40 on steriods..

Anti seize is messy and nasty..But it works great on old hardware and galled threads.

As far as derating tq specs you just do it dry if it calls for dry and vice versa.I do wonder since your asking about a tq spec are you gonna reuse hardware or run new hardware. I never tq dry, at least a drop of lube.I also try not to reuse hardware do to bolt stretch..Remeber its not the twist amount that holds it all together. Its the pulling force and actual stretching on the bolts/studs that keep it tight.Thats a direct effect of the tq spec.So if the hardware is old and has been on off a couple times its probally close to or actually yeilded and thus junk.

Hope this helps.