Connecting Two Pieces of Chain with a Shackle

[cwyckham]

Originally Posted by Old Swampy

The problem with traditional shackles is that one with strength to match good chain has a pin too fat to fit through the chain links. The only suitable connectors are the ones loggers use which involve two halves which are connected by a pin which has to be peened to keep the pin in place. I haven't seen any that are galvanized. I carry the logger version for use in the event of a big storm. Old Swampy

Welcome to CF, Swampy.

[jongleur]

Orchidius-

You use a shackle to attach your chain to
your anchor, no? Should be about the same
stresses anywhere else.

[svadagio]

Hi
Started using stainless quick links some time back for jobs that were not as critical. Used only high quality like Wichard. Used on the snubber. Slowly started using it more places. Have not had a failure. Have used it in storms etc. Used it in a hurricane but only on the snubber and the connection between the rope and chain on the third anchor. I am careful to buy quick links rated higher than the chain (3/8 HT). Thighten it with a wrench and pry bar. Never had one unscrew.
Bob

[Hudson Force]

Originally Posted by Old Swampy

The problem with traditional shackles is that one with strength to match good chain has a pin too fat to fit through the chain links. ................ .......... Old Swampy

I sometimes need a little help in understanding and here's a case. Say I have 5/16" chain and purchase a shackle with matching 5/16" inch pins. Certainly these pins fit the chain links for each link has the adjacent 5/16" link passing through it. Isn't a quality 5/16" shackle matching the strength of the chain?

In addition, welcome, Old Swampy, the the community

[atoll]

i have found the best way to join 2 lenths of chain is to use one of the links,and re weld it.

this is done by placing the joining link in a vice,cutting it along the existing weld/join on the upper side with a hacksaw,then using a wrench to open up by bending the upper part of the link,each side by 45 degrees untill the chain to be joined will pass,then close using the wrench,then weld the link closed.
a bit of galvanising spray will protect the weld.

much superiour to any c link join in terms of strenth

[geoff3nebel]

The general, and widely accepted practice when joining chain with shackles, is to use a shackle one size greater than the chain. So if your chain is 5/16" or 8mm you should use a 3/8"or 10mm shackle; if it's 3/8" or 10mm chain, use a 1/2" or 12mm shackle; if it's 1/2" chain etc.

[Matt Johnson]

7/16" Crosby shackle will fit in 5/16 HT ACCO chain....just incase anyone cares.

Matt