Williams/Bally Cabinet Hinge Pivot Bushing
Ships from US and is sold by Pinball Life$3.75
Williams/Bally pivot bushing.
Used in conjunction with 4322-01139-12B carriage bolt to secure the hinge attaching the backbox to the cabinet.
Specs: 1/2" shaft, 3/4" diameter head, 1/4" hex center and 3/8-16 thread.
Williams/Bally reference #02-4352.