Eye bolt

Machinery eye bolts are fully threaded and may have a collar, making them suitable for use with angular loads up to 45°.

[1] The loose ring is articulated, such that it can rotate in at least one axis, and can thus reduce bending forces on the bolt when loaded and will present the minimum obstruction when "flat".

'Pigtail' eye bolts are a form of bent loop where the ends are not closed, but multiple turns are used to prevent a rope slipping out.

[2] Members of the Feminist Studio Workshop of 1978-79 also made 500 of these necklaces to celebrate the 5th anniversary of the Woman's Building in Los Angeles.

"[3] Sisters of Jam also did the installation "Hello Sheila", which features an eyebolt on a chain, at the Survival Kit Festival in Umeå in 2014.