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Old 11-10-21, 03:52
Grant Bowker Grant Bowker is offline
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Join Date: Jul 2006
Location: Ottawa, Canada
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Not directly suitable but indicates that at least someone wants slots and hex heads on the same fastener...
https://www.mcmaster.com/screws/hex-...slotted-drive/
Were fasteners on the 52 set like those on the 19, often BA threads?
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