As an experienced and expert repair shop for a wide range of hydraulic and pneumatic equipment, we often get asked about fastener grades for various pieces of equipment. At first glance, this may not seem like such an important question, but hydraulic systems are typically used in extremely rugged and harsh environments and hardware failures can be costly in terms of both time and money.
Operators who experience frequent equipment failures, especially for such critical components as bolted pump flanges may be the victim of hardware that’s simply not meeting their specs. For example, some repair shops may be using SAE Grade 5 hardware when they should be using Grade 8. In some cases, this may be a simple case of “ignorance is bliss” and the repair mechanic may not realize there’s a significant difference between the two grades’ performance. With that in mind, let’s take a look at why it’s important to use Grade 8 hardware to meet your specs.