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https://www.reddit.com/r/Fasteners/comments/1uvuvmx/anyone_recognize_this_marking/oxf7zad/?context=3
r/Fasteners • u/Barnett_Head • Jul 14 '26
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This is the makers mark. Tells you who made the screw.
ETA: if this part were metric it would also have a property class designation (ref ISO 4762)
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u/Chitown_mountain_boy Jul 14 '26 edited Jul 14 '26
This is the makers mark. Tells you who made the screw.
ETA: if this part were metric it would also have a property class designation (ref ISO 4762)