Every tool salesman on the planet says their tools are the same as Snap On. The quoted response is from a web store, a distributor of Williams tools, not a representative of the Snap On Corporation.
All we know for sure is:
1) Snap On owns Williams and there appears to be at least some cross pollination in tool design and possible manufacture.
2) There are visible and inspectable differences between similar products that go beyond surface finishes. The Williams HH screwdriver handles appear to be made from Snap On molds. But the Williams screwdriver blades don't have the ACR tips. Sockets and wrenches are different dimensionally. Some of this is documented
here.
3) A video on youtube shows clips from a socket manufacturing process showing both Snap On and Williams products. Many here believe this was filmed in a Williams factory that also makes Snap On sockets and that they are therefore identical or identical up to a certain point. But no serious person can be sure of this without seeing material certs, manufacturing plans etc.
I've spent the last 25 years in product design and manufacture of aerospace products. I've toured countless factories. Manufacturing is complicated; far more than many here seem to think (e.g. made in the same factory=product is same). Product differentiation can take place at virtually any step in the fab process including inspection. That said, I'm not convinced any of this matters. By all accounts Williams tools are excellent in their own right.
But like PJNJ said, there's no reason to slip in the statement that Williams and Snap On tools are the same or equivalent or whatever. This is not relevant to this thread. This "technical misinformation" devalues GJ, this thread, and gives false information for the multitudes of folks looking for truth.
Rest assured, like our shameful sticky Truck tool equivalents thread (looks the same therefore it is the same), there is no truth to be found here. No one on GJ (including and especially me) knows for sure what differentiates Snap On from Williams tools or Snap On from CDI torque wrenches. All we can know is that they are different.
Please PM me questions or responses or create a new thread so as not to derail this thread.