Bag of 10 ( 5 ea 3/8 and 5 ea 1/2)
These stainless steel indented, unslotted hex head screws are great replacements for lost under playfield screws. The shorter ones are for lamp brackets and other thin parts, the longer ones are for thicker brackets such as flipper plates and pop bumpers. Williams used #6 screws on all machines until WPC95. You can use #8 screws in stripped out holes, but a better approach is a piece of bamboo and some glue.
Williams plated the shorter ones a gold color. Use a red Sharpie to mark the heads.