Cleaning up in the garage today and ran across these three parts in a small closed plastic tub.
The washers are 0.805" ID, 1.18" OD and about (I forgot to measure) 3/32" thick. There are wear marks on the flat surface of the washers starting at the hole and going about 1/2 way across.
The head of the screw is 0.57" diameter and 0.25" thick.
The threaded part of the screw is 0.43" long and has 3/8"-24 NF thread.
The "pin" on the end of the screw is 0.25" long and 1/8" diameter down to near the tip.
The parts had oil/dirt scum on them. Dirtier than if the were internal engine parts.
I have a partially assembled (and very clean) GMC 302, a bunch of parts pulled from a GMC 228 that was scrapped and my driver '52 GMC with 228.
Other than being in the same container, I have no reason to believe the washers have anything to do with the screw.
'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12 '52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.
