Simple and reliable, and if necessary, split the loop turns out of the three bent as shown, metal plates and nail as their axis.
The purpose of such loops can be very different. For mounting each of the plates is sufficient to drill two holes for screws or bolts.
V. AVTUKH, p Ozery, Belarus
Recommend to read
THE KEY FOR “LAMB”
It happens that the nut-"lamb" cannot be unscrewed by hand. Will come with original key from the segment of steel pipe with diametrical cuts.
IN HASTE
Beginning homebrew is often the inexperience or negligence cause a wound to themselves, especially on the fingers. Not enough to have in the workshop first aid kit, should still be able...