drawbolt

noun

1. A type of bolt with a threaded end that can be tightened to pull connected parts closer together and to increase tension.

   “When changing from one diameter to another, it is necessary to change both the drawbolt and outer sleeve.”

   “Then tighten the drawbolt one additional turn to make the punch bite into the metal.”

   “Tough joints for heavy jobs, such as workbenches are obtained by the use of drawbolts (Fig. 13-8).”