Check Your Shackles

. . . what you DON'T see is what you get.

Two screw pin shackles have the same Working Load Limit (WLL) of 4 3/4 Tons . . .

same 3/4" size, so what's the difference?

These are also known as bow shackles, anchor shackles, clevis or D-Ring shackle.

Generic import, no manufacturer markings, only the Working Load Limit and size.

Not much more to say about this one, we don't know who made it, what country it was made in,

what it is made of, or it's Minimum Ultimate Strength. Some will just say China, this one does not even

have that marking. 

Here is a Crosby® G-209 3/4" screw pin anchor shackle. The back is marked USA and the front shows the

manufactures name and the CE Marking. The letters "CE" are the abbreviation of the French phrase

"Conformité Européene" which means 'European Conformity'. All Crosby shackles meet the performance 

requirements of Federal Specification RR-C-271D Type IVA, Grade A Class 2. The Minimum Ultimate 

Strength is 6 times the Working Load Limit, for this shackle that would be 28.5 tons.

This shackle will deform before it breaks.

Above left shows the pin is also marked "CG" for The Crosby Group.

Above right shows two "45" lines on either side of the name, they are at 45° angles from vertical. 

45° from in-line (vertical) only provides 70% of the rated Working Load Limit.

This is the "Mile High Swinging Bridge" at Grandfather Mountain, North Carolina.

The term "mile high" refers to the structure's 5,305 foot elevation above sea level.

That's me, in the gray shirt, taking a photograph of the suspension system.

The bridge is hung using Crosby 7/8 " shackles and tethered using Crosby 7/8" shackles.

Each shackle has a Working Load Limit of 6 1/2 tons.

This page is not endorsed by, nor affiliated with The Crosby Group, Inc.

All trademarks shown are properties of their respective owners.