Steven's FAQs

RCSC

What is the RCSC?

RCSC is the Research Council on Structural Connections. It is a non-profit, volunteer organization, comprised of over 85 leading experts in the fields of structural steel connection design, engineering, fabrication, erection and bolting. Its goal is to support research and gain knowledge to publish standards in structural steel connections.

Lock Washers with A325

Can I use a lock washer in an A325 structural connection?

Looking through both the ASTM specification F3125 Grade A325 and the Research Council on Structural Connections (RCSC) website, we have found neither mentioning the use of lock washers in a structural steel connection.  We interpret this as neither allowing nor forbidding the use and that it would ultimately be up to the engineer of record... Read more

Stainless Rust

Why are the hex heads of my stainless steel bolts developing rust?

There are two possible causes for this. First is that oxidation can occur due to contamination from equipment that is used to make other carbon steel products. This can leave some iron deposits that will rust over time. This is only aesthetic, but can be unsightly. The second possibility is that the bolts were not manufactured properly... Read more

Locking Tie Rod Assemblies

How do you lock a tie rod assembly in place?

The easiest way to lock a tie rod assembly in place is by including an extra nut that can be run up against either the clevis or the turnbuckle.  Once the nut has been jammed in place the assembly will be unable to move.  These pictures show that the nut has to be placed on... Read more

Clevis

High Strength Clevises & Turnbuckles

Are high strength clevises and turnbuckles available?

High strength clevises can be provided in instances where smaller clevises are needed while keeping a higher safe working load. High strength clevises are also used to develop the full capacity of high strength threaded rods. Since high strength clevises are not readily available in the marketplace, these items and can add significate lead time... Read more

Turnbuckle Drawing

Turnbuckle Dimensions

How are turnbuckles measured?

A turnbuckle body is designated by the diameter of the rod threading into it and the length of the take-up inside the turnbuckle rather than the overall length. For example, a 1” x 6” turnbuckle body has an overall length of 8⅞”, but has an opening or “window” measuring 6”. Common sizes available are 6”,... Read more

Stock Tie Rod Assemblies

Are stock tie rod assemblies available?

Unfortunately not. Due to the custom nature of each assembly’s unique diameter, length, and right hand and left hand thread requirements, we do not have a way to inventory “standard” assemblies. Clevises also have several options per size including tap size, right or left hand threading, pin size, and grip which is the reason these... Read more

20′ All Thread

Are twenty foot lengths (20’) of all thread rod available?

20’ lengths of all thread rod are not commercially available off the shelf and would have to be custom made to order. In most instances, all thread rod is cut to length and it is more economical to use more sticks of standard 12 foot and shorter sizes. If a 20 foot connection is needed,... Read more

Leveling Nuts

Can I use a full size nut as a leveling nut?

In most situations you can. A leveling nut is a term that refers to the application of the nut rather than the physical dimensions of the nut. Many times they are called out as “jam” or “half” nuts because they can be cheaper, do not need to provide structural value, and are just used for leveling purposes. ... Read more

3/8″ F1554 Bolts

Can I order 3/8” diameter F1554 anchor bolts?

No. In 2015, ASTM changed the diameter parameters from 1/4”- 4” to 1/2”- 4”; eliminating 1/4” and 3/8” diameters from the specification.  This was in part due to the lack of material availability that had the test reports or traceability in these smaller diameters that conformed to the F1554 requirements.  If your project requires F1554... Read more