Tag Archives: partially threaded metric bolts

Fully and Partially Threaded Metric Bolts: Which is Right for Your Job?

metric boltIt’s easy to get confused when deciding whether to use a fully or partially threaded metric bolt for a particular assembly. Often, people simply use whatever bolt is available—assuming that if it fits, it’s probably close enough. However, it’s important to bear in mind that the size of a bolt hole is just one small part of the overall engineering that goes into a completed assembly.

How a bolt grips and how loads are distributed by the bolt, are critical factors in the strength of a union. Bolts grip and distribute differently, depending on variables such as thread pitch, head size and, of course, whether the bolt is fully or partially threaded. To ensure proper grip and resistance to breakage, it’s important to use a bolt that meets the original engineering specs.

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