High Wall Rope Thimble

A high wall rope thimble sits inside a spliced eye to keep the rope round and protected where it bears on hardware. The tall side walls hold the rope in the groove better than a standard thimble, which matters on synthetic rope under load.

What a high wall thimble does

Every time a spliced eye is clipped to a shackle or block, the rope at the bearing point takes a tight bend and concentrated pressure. A thimble spreads that load around a curved groove, so the fibers are not crushed or cut, and the eye stays open for the next connection.

Standard thimbles were designed for wire rope, and soft synthetic rope can roll out of a shallow groove. The high wall design gives the rope deeper sides to sit in, which keeps it seated when the load shifts or the rope stretches. That is why you see them on ring slings, block slings, and the working ends of rigging lines.

Sizing and use

Match the thimble to the rope diameter and to the pin or connector it will ride on; a thimble that is too small pinches the rope and one that is too big lets it shift. Find splicing tools and related hardware in rope care and splicing.

Splices must be made following the rope maker's splicing instructions. Inspect thimbles for cracks, sharp edges, and spreading, and replace them when worn. Rig only within the rated strength of every component in the system, inspect gear before each job, and make sure the crew is trained in rigging practice under ANSI Z133 and the manufacturer's instructions.