What it is?

What is the specific use of this thing?? Marked 1/2
Joining two chains?? What else. Seems very well made.
View attachment 4782
Coupling link

 
No roll pin,, the center sleeve /pin seems to be the holding part.
5lb hammer and a punch and no movment,, I think some heat maybe.
I just found it amongst my stuff.


Use a big C clamp and a couple of spacers.

Lots of people use them to go on the safety chain attachment points on the newer hitches that the smaller hooks won’t fit on. I put a set on my 2012 Chevy a few weeks ago.

Not mine…

 
No roll pin,, the center sleeve /pin seems to be the holding part.
5lb hammer and a punch and no movment,, I think some heat maybe.
I just found it amongst my stuff.
It's called a hammer lok or hammerlock. Pin will only come out 1 way, no heat required. If you think you're ever gonna want it apart again, blob some never seize on the bushing when you hammer it together
 
hammer locks dont really come apart except with a torch or zip wheel. thats kinda the point of um, permanent.
I used to take them apart, used them for the big chains the plows hang from on the front of the graders. Maybe there's more than one kind? Now they don't come apart easy, but if you got the right size punch, not too bad
 
I used to take them apart, used them for the big chains the plows hang from on the front of the graders. Maybe there's more than one kind? Now they don't come apart easy, but if you got the right size punch, not too bad
meh, melt it and use a new one.

i am doing a little better in the patience dept, i silver soldered a 3/4 nipple on that furd gas filler neck today. eye surprise even myself once in a while.