#10-32 x 3/8" Black Socket Head Bolt
Ships from US and is sold by Pinball Life$0.19
This socket head bolt that attaches flipper coil stops to the mounting bracket.
Used with the #10 high collar locking washer (sold separately).
Bally/Williams reference #4010-01066-06.
American Pinball reference #91251A340.
Jersey Jack Pinball reference #90-004010-06.