U-bolts
Bent Bolts
Bolts
Eye Bolts
Hex Nuts
Screws
Socket Products
Washers
Lifting Hardware
Anchors & Pins
A U-shaped piece of metal secured with a clevis pin or bolt across the opening, or a hinged metal loop secured with a quick-release locking pin mechanism. They are used as a connecting link in all manner of rigging systems, from boats and ships to industrial crane rigging. A shackle is also the similarly shaped piece of metal used with a locking mechanism in padlocks.