Newest FAQs
In theory, one could potentially carve out a groove that would be sufficient for fitting a shear plate or split ring. However the labor and ability to carve an exact fitting grove would be time consuming as well as tedious. All references to the proper installation of shear plates and split rings, such as the... Read more
ANSI/ASME B18.2.1 is the dimensional specification that covers hex bolts and square head bolts. Note 14 of the specification addresses reduced body material that is used in the roll threading process. “14. Reduced Diameter Body. Bolts may be obtained in “reduced diameter body.” Where “reduced diameter body” is specified, the body diameter may be reduced... Read more
There are a variety of different types of construction projects that require domestically manufactured (U.S.-made) products, including bolts. There are three main pieces of legislation that mandate “domestic” products. The American Recovery and Reinvestment Act of 2009 The American Recovery and Reinvestment Act of 2009, also known as “ARRA” or “Stimulus Plan,” was enacted into... Read more
Many manufacturers sell through distributors, who then stock those manufactured goods and sell to the end users of the product. Portland Bolt is a manufacturer, but does not work through these distribution channels. We primarily sell directly to contractors, steel fabricators, and other construction-related end users of the bolts that we manufacture. Due to the... Read more
It is known that the required grade of washer to be used with an A325 or A490 structural bolt is an ASTM F436 hardened washer, however whether or not a washer is required to be used in a given application is often brought into question. The purpose of using a flat washer with a bolt... Read more
Yes. Custom F436 washers can be manufactured to larger sizes per your job’s requirements. Portland Bolt has been involved in many projects where custom F436 washers were specifically called for on a job. However, ASTM F436 does not technically allow for custom sizes and only allows for very specific types and styles that conform to... Read more
Theoretically, this substitution makes sense. However, one should always check with the project engineer before making any alterations to the grade or configuration of product that has been specified for the structure. Please note that for liability reasons, Portland Bolt is not recommending that this substitution be made without appropriate approval. The A307 grade A... Read more
Bolts manufactured to the ASTM A325 specification have a fixed thread length for a given diameter, which is often shorter than other grades of bolts. For example, a 3/4″ diameter A325 has 1-3/8″ of thread and a 1″ A325 has 1-3/4″ of thread, regardless of the overall length of the bolt. Our structural bolts product... Read more
There is no difference between these bolts. The “X”, “SC”, and “N” simply identify the type of connection the bolts are used in. “X” and “N” are bearing type connections, where the bolts are being used in shear. “X” means these particular A325 heavy hex structural bolts will be used in a bearing type connection... Read more
An A325T bolt is a fully threaded version of an F3125 grade A325 heavy hex structural bolt. The F3125 specification is very specific when it addresses thread lengths. Standard A325 bolts have very short thread lengths due to their application as a bolt intended for use in structural steel connections since often it is undesirable... Read more