This episode refers to stem bolts, a possible homage to numerous self-sealing stem bolt references made in Star Trek: Deep Space Nine (1993).
This was the last episode of the series to air before it was renamed Star Trek: Enterprise.
The crates full of stem bolts that Reed looks at are the same props that were called warp injector casings in The Seventh (2002).
The Enterprise's brig makes its first appearance in this episode, established as one of several upgrades installed during the ship's retrofit in The Expanse (2003).
(at around 23 mins) One of the numbers visible on the screen is 8675309, a number made rather famous by one Tommy Tutone.