Stainless Steel Fasteners 3

[dik]

Can you get headed studs in stainless? Are they designed like a normal headed stud? or can normal carbon steel headed studs be welded to stainless steel without problem?

In addition is there a fastener like Tapcon that is available in stainless steel?

Thanks, Dik

 

[jhnblgr]

410 Stainless Steel Tapcon Concrete Screw | Tapcon

Tapcon Concrete AnchorsProviding the ultimate in corrosion, rust, stain and temperature resistance, the 410 Stainless Steel Tapcon is the most universal screw for almost any application.

www.tapcon.com

Shear Studs | BACO Enterprises Inc

Get stainless steel shear studs and other fasteners quickly. Submit an RFQ for a rapid response and rely on Baco Enterprises to swiftly meet your needs.

www.bacoent.com

1" Shear Connector Stainless Steel

These general purpose concrete anchors are used in all types of concrete connections. They can be welded to a flat surface or to the inside or outside of an angle.

truweldstudwelding.com

https://www.sciencedirect.com/science/article/pii/S0141029624014925

 

[dik]

Thanks... I didn't know that Tapcons come in SS.

Can carbon steel headed studs be welded to SS plate? The movie shows it can be done. Thanks, again...

Is there a commercial product that can be used for passivating stainless steel weld. It's such a 'common' connection that there should be a commercial product.

The connection looks like this:

 

[jhnblgr]

Looks like you can apply this product as directed. https://www.theruststore.com/collections/citrisurf/products/citrisurf-77-plus-liquid-5-gallon-carboy

There are other options but I think this is the least investment required by the contractor.

 

[Rabbit12]

Thanks... I didn't know that Tapcons come in SS.

Can carbon steel headed studs be welded to SS plate? The movie shows it can be done. Thanks, again...

Is there a commercial product that can be used for passivating stainless steel weld. It's such a 'common' connection that there should be a commercial product.

The connection looks like this:
View attachment 10345

Dik, I've had contractors use this stuff before: https://www.derustit.com/products/wonder_gel.php

This was used for field welds. I don't know what is used in the shops on fabricated pieces, but our specifications require P&P on any welded element.

And yes from my understanding SST can be welded to carbon. Can't say I've done it. I usually try to find a way to avoid that. More from my lack of understanding than it really being an issue.

 

[jjl317]

I would recommend Elco (now owned by Dewalt) Bi-Flex 300 series stainless steel screws - Ductile body with hardened tip, better for hydrogen corrosion embrittlement/HSCC

 

[XR250]

I think the SS Tapcons are 410 grade which still rusts pretty easily

 

[dik]

I would recommend Elco (now owned by Dewalt) Bi-Flex 300 series stainless steel screws

Thanks... I'll look into them; I was planning on using Tapcons but these could be better. The client would not like rust.

 

[jhnblgr]

What is the purpose of the screws? Just wondering if there isn’t a better method of attachment, the screws for concrete have a nasty habit of snapping when installing and the heads get beat up on install

 

[dik]

Looks like you can apply this product as directed.

Thanks...

 

[dik]

What is the purpose of the screws?

There's another part of the project that requires them...

And yes from my understanding SST can be welded to carbon.

I was talking to a welder and they often use 306 wire; I have to check what this product is and what the actual spec for it is.

 

[jhnblgr]

I wonder if you could use flush concrete insert anchors and a flush machine screw.

 

[dik]

I wonder if you could use flush concrete insert anchors and a flush machine screw.

I haven't asked, but I suspect the architect doesn't want to see fasteners.

 

[jjl317]

FWIW - The Biflex screws come in under-cut head (though the number of options is somewhat limited)

 

[jhnblgr]

Buy 1/2-13 x 1-1/4 Inch 100 Degree Socket Countersunk Screws - Passivated Stainless Steel (18-8 / 304) - Accu

Order 1/2-13 UNC x 1.25 Inch Thread Length 100 Degree Socket Countersunk Screws - Passivated Stainless Steel (A2) from Accu. No minimum order quantity and same-day dispatch.

accu-components.com

Bolt Depot - Drop-in anchors, Stainless steel 18-8, 1/2"-13

boltdepot.com

 

[Harbringer80]

Simpson has a stainless steel anchor for that. Goes down to a minimum of 1/4"Ø.

 

[dik]

Thanks for the info, gentlemen... I didn't realise there were so many available...

 

[jjl317]

I just realized I gave you a metal to metal "Tek style" screw. But Dewalt does make the Agge-gator, which is similar to the Bi-flex, but for concrete / masonry. My apologies for the confusion.