A325 Fasteners, Torquing 2

[JeffLam]

Hello Gents,

Just a basic question, I am trying to connect modular platforms with 5/8" A325 bolts with A194H nuts. There will be a flat washer on the nut end and a direct tension indicator on the head end. Just wondering if it is ok to apply the torque in the nut end? I assume not because the tension washer is on the head end, but what if we put the washer on the nut end? I still don't think it is possible because the torque may mess up the threading? Would like confirmation with someone more experienced as I am a newbie. =)

Cheers,

Jeff

 

[paddingtongreen]

Look up the published information from the maker of the washers, It may say different than you will hear from us. I say put it at the unturned end although one manufacturer did have instructions for the turned end. The washer does not mess with the threads.

I thought everyone used the tension set bolt these days.

Michael.
Timing has a lot to do with the outcome of a rain dance.

 

[azcats]

I'm looking at an Applied Bolting DTI Installation sheet and the show that the DTI is acceptable under either the bolt or the nut. If under the nut, you must use a washer. If under the bolt, you must prevent rotation of the bolt head.

Plus a bunch of other caveats.

 

[JeffLam]

nice! thanks azcats. I guess torque typically applied in the nut end. I didn't know that! And the DTI can be applied on either ends of the fastner. Thanks for all your help!

Good Day!

Cheers,

Jeff

 

[Ron]

Agree with azcats. As long as you don't gall the surface of the DTI, you can place it on either side. Tensioning is normally done from the nut side. A washer between the DTI and the turned item will prevent galling.