Stem bolt

Stem bolts were a type of connective device introduced sometime prior to the 2150s.

In 2153, a group of Osaarians in the Delphic Expanse had appropriated a large number of stem bolts, which they stored in a sphere. 

In early 2375, Worf was annoyed that he and the USS Defiant (2370) had been on an extended convoy mission while the Dominion War was still raging. He preferred to be fighting, not wasting his time "protecting a shipment of stem bolts."