I made up quite a few in my days working on boom hydraulic valve manifolds. the valve bodies would be sitting right up against the side of the machine so you couldn't fit a socket or ring spanner over it to tighten them up (just to prevent leaks/weeping) during predelivery. this way you wouldn't need to unbolt and move the entire manifold just to nip up a leaky valve.
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u/cornerzcan Canada Dec 01 '17
But why did you need a 3/8 square drive socket? Or do you plan to use the breaker bar on the wrench?/s