Tag Archives: ASME

Fastener Standards Organizations

What standards organizations and specifying committees cover the types of bolts and fasteners Portland Bolt manufactures?

Portland Bolt manufactures a wide range of bolts and fasteners to numerous standards set by many different organizations and specifying committees. There are many different organizations for fasteners, all of which have their own set of standards and guidelines for manufacturing. We, as estimators, are often asked what the acronyms for such organizations and committees... Read more

Thread Pitch for 1-5/8″ Bolts

What is the Unified National Coarse thread pitch for a 1-5/8” diameter bolt?

Currently, the American Society of Mechanical Engineers (ASME) specification B 1.1 does not define a “standard” Unified National Coarse (UNC) thread pitch for 1-5/8” diameter bolts (or 1-7/8” for that matter). The “pseudo standard” coarse thread that is often used in the industry is 5-1/2 threads per inch. The 8UN (eight threads per inch) series... Read more