I have another K-member I am going to install in my car and it has a build date of 1966, the steering box bolts are 7/16 does anyone know a source for the 7/16 bolts to attach the steering box. Thanks

I'm assuming you want originals. I would call/go to a yard or put an ad in here & get em sent to your door.

Those are a unique bolt and I don't know of anyone who is reproducing them so you'll have to find used ones.

Thanks I have looked and don't think they make them either, it seems like every time I believe they don't make them someone on MOPARTS breaks the code and finds them.

US Car Tool makes the 12 point bolts 1962-70
521 Restorations makes the 6 point ones 1971-up
I have nice originals .

My 65 Cuda has 6 point bolts. Just bolted the box back in two weekends ago. They look like the US Car Tool bolts, but are 6 points.

I sent U S Car Tool and e-mail I have the 1/2 ,6 point and 12 - point I need either or in the 7/16 version if you have that send me a pvt e-mail.

Yes correct. Thanks for reminding me. 1962-65 use a 7/16" 6 point. Then 66-70 used a 1/2" 12 point. 71-up 1/2" 6 point

Maybe I have this wrong? You say your 66 had the 7/16 6 points? I have a 66 that I'll check today.

Yes my 66 K-member is 7/16.

All good information here, can I ask does it matter manual or PS?
Ron

I have a low mile 1968 Fury here with PS, it has the 6 point type.

Here is a picture of the date , sorry if it is a little blurry.

I don't think so.

And see I have a 68 Coronet 4-dr that looks to be original and it has 12 points.
Have three 70's with 12 point
My 66 Coronet and three 64's have 6 points.Both M/S and P/S,

Also this looks to be another difference in the 66-69 B K-frames beside the idler arm.