Swivel Eye Snap Shackle
A swivel eye snap shackle is a quick-release rigging connector that features a spring-loaded plunger pin and an independent attachment eye (bail) that rotates a full 360 degrees.
Unlike the fixed version, the shackle body and the lower attachment loop are separate components connected by a heavy-duty mechanical pivot.
This swivel joint allows the shackle to rotate freely under tension, preventing attached ropes, lines, or cables from twisting, tangling, or hockling.
Key Characteristics & Mechanics 360-Degree Rotation:The bottom eye spins smoothly along its vertical axis. This dynamic movement automatically adjusts to changing load angles, significantly reducing friction and wear on both the line and the hardware.
Quick Release Under Load: It utilizes a spring-loaded plunger pin mechanism. By pulling a split ring or an attached lanyard, the gate instantly snaps open—even when the line is under hundreds or thousands of pounds of tension.
Permanently Attached Eye: The bottom loop is a closed, solid ring ("eye"). Ropes must be permanently spliced, swaged, or knotted directly onto the eye.
Common Applications
Swivel eye snap shackles are the industry standard for dynamic marine running rigging and tactical environments where lines are subject to constant movement:
Spinnaker Halyards & Sheets: Essential for flying sails that constantly shift with the wind direction, allowing the sail to rotate without twisting the halyard.
Towing & Rescue Harnesses: Used in dynamic applications like helicopter rescue gear or marine towing where loads rapidly shift direction.
Trade-Off vs. Fixed Snap Shackles While highly versatile, the swivel joint introduces an extra moving part. Consequently, a swivel eye snap shackle is typically slightly heavier and has a lower ultimate breaking strength than a fixed snap shackle of the exact same size and material.
All our swivel eye snap shackles are made with corrosion-resistant stainless steel (316 grade) and come in a range of sizes 70mm/87mm/128mm. So locating the correct one for you is quick and easy.It should be kept in mind whilst making your purchase exactly what the load is that you need your shackle to bear, and choose the shackle accordingly.
Ordering your swivel eye snap shackle couldn't be easier.
Haifan Rigging stocks shackles in a vast supply of shapes and load bearing requirements.Tell us the shackle you need on our form so we can get it to you as soon as possible.
