FI Air Cleaner Clamp 3749810 C2 and Others

[Larry M.]

I had a long post on this not long ago but wanted to ask a slightly different question. I want to "manufacture" some slotted pan head screws like the originals to repair stripped screws in a set of originals and to convert service replacement that have hex screws. John DeGregory commented that LIC had done a nice job duplicating the screw in their repro clamps....this is very true and I bought a set but these clamps have other issues. I've spent some time trying to locate a similar screw but everything I've found has a larger diameter and thicker head and the slot is not cut as deeply versus the bottom surface of the head. As such, If I turn the heads down the slot isn't deep enough. I guess I could get them milled but was wondering.....has anyone ever attempted this and do they have a source for screws which are closer to
the originals?

[John D.]

Re: FI Air Cleaner Clamp 3749810 C2 and Others

Larry, You would have to go to a machine shop and have them set up their big bucks screw machine to reproduce the screw. I had to do that with some of the fillister screws for the FI units. Minimum order was 10,000. Have enough of a couple of sizes for 100 years or so.
Or get someone with a lathe in their basement to make you a few.
Repros are zincad plated. Originals are rusty and grayish.