thread on ATT S1

As far as I know the ATT S1 head has standard thread? 

However several handles with standard thread don't fit on the ATT S1 like the BBS-1 handle, all of Bob Quinn's handles. Others like the Tradere ones and customs do fit. 

How is this possible?

(02-10-2016, 11:42 AM)Snuff Wrote: As far as I know the ATT S1 head has standard thread? 

However several handles with standard thread don't fit on the ATT S1 like the BBS-1 handle, all of Bob Quinn's handles. Others like the Tradere ones and customs do fit. 

How is this possible?

I dont know if that is true, i belevie that he fits

This is my theory, and that is what it is,  a theory.  I've not yet found a handle that didn't fit my ATT's. I have 2 top plates, one slant, one regular. Anyway, I was mucking around and discovered this: The post on the att top plate does not fit through the hole in the Wolfman baseplate, but the post on the Wolfman DOES fit through the hole in the att baseplate, and the handles for these two razors are interchangeable. Don't have any accurate measuring tools but I can't think of another reason but the "ridges"  on the att thread are higher than most (if that makes sense) and perhaps the "valleys" within the handles wider. So while threads on the razors meet the same specifications, if they are made with tight tolerances they may not be able to accommodate the (ever so slightly)  wider post of the ATT. Hope my rambling makes sense.

I've used 3 different grips on a 2015 ATT S1 and they all fit. This does not mean of course that no non-fitting-grips exist.

Odd, all three of my UFOs and Weber fits fine. My fat handle tech is a tight fit and won't go down the last 2-3 threads and I don't feel like forcing it. Maybe bob and BBS use the 10-32 standard thread like the old Gillettes instead of the M5x.8 metric or the other way around? The old Gillette heads have some wear so they usually work with the metric size.

Thanks everybody for the answers, Bob and BBS use the M5x.8 metric according to them. A real mystery .... User Rating: 4.65 ( 1 votes)

(02-12-2016, 12:32 AM)Snuff Wrote: Thanks everybody for the answers, Bob and BBS use the M5x.8 metric according to them. A real mystery .... User Rating: 4.65 ( 1 votes)

Don't know about thread sizes but managed to measure the post widths: ATT 5.00 mm, Wolfman 4.70 mm, Bbs1 4.80 mm,  Tradere 4.80 mm (1/20 mm accurate calipers)

Can't measure depth of thread on inside of the handles but it does show ATT post to be 0.2 mm wider than the Bbs1 post. Saying that, my Bbs1 handle certainly fits on both ATT's I have. I think the specs are all the same but some allow for a bit more play/tolerance and some very little (or in this case not enough)

A similar phenomenon exists with FaTip razors...

See HERE

It is always good to know these things

(02-12-2016, 02:23 AM)ben74 Wrote: A similar phenomenon exists with FaTip razors...

See HERE

Agreed. I picked up a fatip grand nickel a few months ago...tried it on my weber bulldog, standard, and a couple of other handles I had lying around...it screws on but is wobbly. It's not till you drop in a blade that it tightens up. I bought the head to try out with different handles so this was rather frustrating.

My ATT S1 fits fine on both my weber handles...my favourite combination being the weber bulldog which has displaced the beautiful ATT atlas handle.