This is the cruise control servo out of my '58 Chrysler, which is the first car offered with cruise. It is made by Perfect Circle. Does anyone recognize this screw head? Better yet, does anyone know who sells sockets that fit it? It is about 9/32" diameter.
Years ago 8 point sockets would come with a craftsman tool kit they work great for pipe plugs.. Most that got a set threw them away...
No, a 12 point does not fit. Or if it did I would need something like a 17/64" socket which I have never seen. Note how rounded the corners are, too. An 8 point socket might fit, maybe but again I have never seen one of that size.
E sockets (external Torx) are 6 point, won't fit. I also can't find anyone who sells external Torx 8 point sockets.
That is one of the stupid manufacturer security fasterners. you need to either make a tool or get one from the manufactuere or dealer.
I ordered earlier today some of the 8 point sockets from McMaster, but I am not at all convinced they are correct. They might work...but if you look at the rounded-ness of the screw head they are clearly not a 'normal' 8 point configuration.
Those are known as an 8 point star, just search for 8 point sockets, they are still available, if not common E Sockets don't fit - they are 6 point.
No it is not a Torx....8 points versus 6. While I have found reference to 8 point Torx, I have yet to actually see any screws or sockets that are 8 point.
Looks like an eroded spline fastener.. used a lot in the aviation field.. Snap-on and others do make sockets and wrenches..
How about one of those gator grip sockets with the pins in them? Dad got one for Christmas a few years back, not sure if they work.
Thinking about this, and also being the first marketed part of its kind, good chance it was a MFG specific socket head.
Have you tried asking for a double-square bit anywhere? Sunex makes larger ones in metric. Two alternate solutions come to mind. The drive side of an OTC 7807 socket is 3/8" and has double-patterns. If there's something like that in 1/4" drive, it might work, albeit not in a pretty way but I bet you could vice-grip something like that and make it work. Then, if you had a piece of steel stock drilled through the middle and you ground out 8 grooves, you could probably finagle something to work.
If the Lowes set don't work try one of those new fangeled socket sets on the market that grips any rounded or wore down head.
Snapon F308, F310, BLPS814516, BLPS8141 and Craftsman 44341 & 44342, but you probably have those sizes covered w/ the mcmaster stuff you ordered.
I've always had good luck in situations like this by taking a socket that is close but slightly smaller and tapping it tightly over the head so it jams onto the bolt. Then you can unscrew it while keeping downward pressure on it. Being that the head is 9/32 that is just slightly bigger than 1/4 so maybe that size or a similar metric will work. I have a bunch of 8 point sockets that I keep just for goofy stuff like this and although I don't use them every day they do get me out of a jam now and then. Don
i guess it would come down to weather you want save it or just get it out? for the latter ? just pound a nut on it and fill it with weld and back it out with a standard ..... lol
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