MTFCA Forum

I'm hoping someone out there can help. I am repairing my KR Wilson pan jig. It has 10 locating pins that are 5/16 diameter on one end and 3/8 diameter on the other end They are about 1 inch long. Does anyone make a step-pin or something that has those 2 different diameters. I can machine them myself, but if there is something that is already machined to those 2 different diameters, that will save me a lot of work ... My old equipment will require me to make them one at a time. I do not even know the term to use in searching for something like that. All I can think of is step-pin or step-dowel . ??? Any help will be appreciated.

I Googled "stepped dowel pins"...

https://us.misumi-ec.com/vona2/detail/110300256840/

I found a stepped threaded stud, years ago in the bolt cabinet at a VW dealership I worked at.
The threads were gone in the aluminum head on the rear of my H-D, where the exhaust pipe bolted on. Was an Allen head bolt, 5/16", I found 8mm/10mm stepped studs and rethreaded the head for it and used a lock nut. Still in there 20 years and 60,000 miles later.

Mcmaster Carr

https://www.mcmaster.com/8472a13

I may have not been clear on what I'm needing. I do not need a threaded stud. I need both ends to be smooth. The term may be "step dowel pin". Here is a diagram of what I need. If I could find a machine shop with CNC to make them at a somewhat reasonable price I would got that way...

tooling pins or locating pins . google carr lane

The link I posted was for the pin in your drawing. It's not threaded.

Mark, Thanks for the link... Its he## getting old. I never even saw the link. I just saw Mcmaster Carr. You have made my day, Thanks for telling me to look again .....

McMaster Carr has a mind boggling inventory. Everyone on this forum should bookmark its site.

What Marc R. said. McMaster Carr is mind boggling! Dave

Here is the mcmaster drawing. Note the small end will be a little over 5/16”, while the large end will be slightly under 3/8”.

McMaster Carr Nut & Bolt Company. An original supplier to Ford Motor Co., in the Model T era!

The Mcmaster Carr part and my part I need are "about" 1/2 a thou. (.0005) different. The less than a thou bigger on the 5/16 end is to allow the pin to be driven into place and not fall out. As to the 3/8 end being about 1/2 to 3/4 thou different. I do not think Ill ever be able to "beat into submission, with a BFH." a model T pan anywhere near close enough to worry about a 1/2 a thou.... Straightening a model T pan is a somewhat violent affair.

This is one of the reasons why the forum is so usefull. The wealth of knowledge and contacts to get things, or get things done is amazing. I could not have machined these myself to the tolerance the "store bought parts" have. I can work to .001 pretty easily with my antique/ancient machine shop tools, but a 1/2 a thou is a struggle ... Not to mention the time saved. I bought enough to fix my KR Wilson pan jig and also got a few extra for about 41.00 delivered to my door. Im as frugal as anyone, but sometimes it is best to "choose my battles" Thanks again for all the input ...

When you get that pan jig all purdied up, be sure to share some pictures!