Definition of machine bolt
: a metal rod with a usually square or hexagonal wrench head at one end and threads at the other that is commonly available in a size range of from ¹/₄ inch to 3 inches in diameter
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“Machine bolt.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/machine%20bolt. Accessed 19 Aug. 2022.
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