Quote Originally Posted by gabe View Post
I received my fittings this morning.

They all mounted fine except as noted below; some were a little tight and needed some more force to screw in by hand, but they went in fine.



Anyone feeling some resistance when installing these fittings, do not be afraid to exert more force.

One of the blocks I picked at random on the other hand had an inlet thread that would not even accept our own fitting: it screwed in by about 2/3 and locked solid (this goes to show that we can never rule out a defect). I forced our fitting in by using a socket wrench, and then all the BP's went in fine, but the TFC's still refused to screw in all the way. I had to use a G 1/4 tap to clean up that thread. After that, the TFC went in fine too.

I checked 20 blocks with the TFC after that, and found none to be defective. Implemented for secerurity one more QC step to check all threads.

So here would be a reasonable guideline to assess whether you have a serious thread issue with your block: if our own fitting doesn't go in, this would be immediate ground for RMA. You may force our fitting in if you want, using a 5/8 socket, and it might fix all the BP's, but it doesn't seem to help with TFC's.

If our fitting goes in normally, but you can't screw in your aftermarket fitting by forcing it by hand, then go ahead and send the block back, we will retap that thread for you.

Note that I did observe some wide variations in major thread OD of these fittings. So if a fitting is at max spec, and our block is at min spec, that's when it becomes very tight to screw in. Here is a link to BSPP (G 1/4) thread specs for reference: http://mdmetric.com/tech/thddat7.htm
Thanks Gabe kinda late for me as i live in South America can't send the block back to retap...my is the case that wont go with hand...so i will have to use the ones with came and not the BP true silver i bought