IMPA: 230501

Heavy-Duty Eye & Eye Turnbuckles for Marine Rigging

Eye and eye turnbuckles are critical components for tensioning wire ropes, cables, and rods in marine environments. Each turnbuckle features a robust forged steel body with eye terminals on both ends, allowing secure connection to shackles, cleats, or rigging hardware. The body is available in hot-dip galvanized or stainless steel finishes, providing excellent resistance to saltwater corrosion and long-lasting durability for offshore and inshore applications.

Whether you are tuning standing rigging on a sailboat, securing cargo, or constructing deck railings, these turnbuckles offer precise adjustability and reliable load-bearing performance. The right-hand and left-hand threaded shafts allow quick and fine tension adjustments under heavy loads. Available in a complete range of sizes, from 1/4 inch to 3/4 inch thread diameters, they suit a wide variety of rigging tasks—from lightweight dinghies to commercial vessels and fixed offshore installations.

Key Features

Technical Specifications

SizeOverall LengthThread LengthWorking Load LimitMaterial
1/4 inch4 in2 in1,000 lbsGalvanized / Stainless
5/16 inch5 in2.5 in1,500 lbsGalvanized / Stainless
3/8 inch6 in3 in2,200 lbsGalvanized / Stainless
1/2 inch8 in4 in4,000 lbsGalvanized / Stainless
5/8 inch10 in5 in6,000 lbsGalvanized / Stainless
3/4 inch12 in6 in8,000 lbsGalvanized / Stainless

Frequently Asked Questions

What is an eye-and-eye turnbuckle used for?

An eye-and-eye turnbuckle connects two components with eye terminals, such as wire ropes or rods, and provides a means to adjust tension. It is commonly used in standing rigging, lifelines, and cargo lashings on boats and offshore structures.

Which material should I choose: galvanized or stainless steel?

Galvanized steel is cost-effective and offers good corrosion protection for most marine environments. Stainless steel provides superior rust resistance and is recommended for long-term exposure in saltwater or for aesthetic requirements on yachts.

How do I determine the correct turnbuckle size for my rigging?

Match the turnbuckle thread diameter to the wire rope or cable size, and ensure the working load limit exceeds your maximum expected load. Always consider a safety factor and consult rigging engineering guidelines for critical applications.

Can these turnbuckles be used for both left-hand and right-hand threads?

Yes, each turnbuckle includes one right-hand thread and one left-hand thread, allowing you to adjust tension by rotating the body in the desired direction without disconnecting the ends.

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