a coupling device usually found on leaf springs, used to attach the frame and the suspension component

the rearmost mount of a leaf spring. A shackle pivots to allow a greater growing rate of the spring. The stock shackle is commonly replaced with a longer aftermarket shackle for better performance. Here is a picture of a stock shackle, and here is a picture of a flipped hanger with Camburg shackle.

an 'H' looking bracket attached to the front or rear of leaf springs

a piece of metal to attach two ropes, or a block to a rope, or a sail to a rope

Typically used on leaf spring suspensions, it is the coupling device used to attach the leafs to the frame. Installing longer shackles is a quick way to get some lift, but it will not increase your clearance.

Part of the indispensable equipment on the boat. It is a small device used for attaching lines to other things, like sails.

A link that connects a leaf spring to the chassis or frame. The shackle allows the length of the spring to change as the suspension moves up and down.