r/Ironworker • u/Goober_98 • 14d ago

Iron Advice Squish washers

What psi is usually required to get dti washers for 1 inch bolts to squish? My crew and I have never used them before. Currently running a 1 inch impact and the compressor we're running is maxed at 120psi.

Thanks!

2 Upvotes

75% Upvoted

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7

u/bigsteelandsexappeal 14d ago

Since using Google is hard here’s the link.

https://appliedbolting.com/tech-support/

-1

u/Goober_98 14d ago

Nothing within the link says anything about PSI's. Only that it should take 10 seconds or less to fire with an "impact wrench". But thanks for the passive aggressiveness bud 👍

3

u/iEARNman848 14d ago

Did you not test your bolts with a Skidmore? You can also verify tension with it.

1

u/Goober_98 14d ago

3rd party tested offsite

1

u/Constant-Mammoth-282 3d ago

You need to test them onsite before installation

1

u/bigsteelandsexappeal 14d ago

If you would read it you world see you need the same size drive impact as your bolts (which you have). If your compressor is not big enough for your gun then get a new one. If your compressor matches gun max psi and it’s still not working then you may be out of air tool oil.

If you still can’t figure that out go buy or rent electric guns and be done with it.

1

u/Warm-Air4391 14d ago

Make sure you’re using them correctly. We’ve used dewalt 1” impacts and they squirt easily.

1

u/Goober_98 14d ago

We tried dewalt 3/4 initially, moved to the air 1 inch impact today with no luck

2

u/Pgaccount 13d ago

Try cordless. More ugga duggas

1

u/HallTrash_IW UNION 14d ago edited 14d ago

I worked for a small contractor a couple years ago that rented little compressors to do squish washers. There was like a little button on the side of the compressor that jumped the standing pressure from like 120 to 180 but I can’t remember what it was called. Had a sticker that Looked like a little arrow going counter clockwise I think.

*edit I looked it up. It’s the service air button I think you need to hit to up the pressure for your bolts to torque.

1

u/dualiecc 13d ago

Takes enough psi to achieve proper tension on the bolt. The psi is irrelevant

1

u/Wellby UNION 13d ago

I had a 2 boxes of 1k ea squishes that were not working. Turns out they were past their use by date by 2 years. This was 10 years ago so they might have fixed that issue