Pinball leg bolts, extended silver bolt. 2-3/4". Set of 8.  Price includes shipping
 
Extended-length replacement silver "acorn head" (rounded top) leg bolts for Williams, Bally, Data East, Sega, and Stern pinball machines.
These bolts are 1/4" (3 threads) longer than the standard leg bolt to accommodate the extra length needed for leg protectors, cabinet protectors, drink caddies, leg light ups, etc..
Williams/Bally reference #4322-01125-40 & 4322-01125-44.
Data East/Sega/Stern reference #231-5001-01.
Jersey Jack Pinball reference #90-008038-40.
Multimorphic reference #HDWR-Z001-0000.