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PHONE HOTLINE: 800-346-4296 E-MAIL: sales@hayn.com
Contact Us
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Turnbuckle Body – Closed

The Hayn Closed Turnbuckle Body is a Type 316 stainless steel tubular body available in nine thread sizes from 1/4-28 through 1-12, providing the protected tensioning mechanism at the core of Hayn closed body turnbuckle assemblies for marine and architectural cable applications. 

Strong Where It Matters

Turnbuckle Body – Closed

The closed tubular body shields the threaded rod ends from the marine and outdoor environment, reducing corrosion exposure and maintenance requirements compared to an open body design. On 5/8" and larger sizes, a bronze thread insert prevents galling between the stainless steel rod ends and the body during tensioning and adjustment — a critical feature on fittings that may see repeated seasonal adjustment over many years. Available in two body lengths on the 1/4-28 size (2-3/4" and 4-1/4") to accommodate different assembly length requirements, with body diameters from 7/16" through 1-1/2" across the full thread size range. 
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turnbuckle body closed

Turnbuckle Body Closed

Part # P-Thread L-Body Length B-Body ⌀ Weight lbs.
14TB2 1/4-28 2 3/4″ 7/16″ 0.04
14TB 1/4-28 4 1/4″ 7/16″ 0.07
516TB 5/16-24 5″ 35/64″ 0.14
38TB 3/8-24 5 1/2″ 5/8″ 0.18
12TB 1/2-20 6 1/2″ 3/4″ 0.35
58TB 5/8-18 8 1/4″ 1″ 1.03
34TB 3/4-16 9 3/4″ 1 1/8″ 1.36
78TB 7/8-14 11″ 1 3/8″ 2.62
1TB 1-12 1′-1″ 1 1/2″ 3.50

Note: 5/8″ and larger tubular turnbuckle bodies have bronze thread inserts for a non-galling feature.

Engineered In America Every Hayn fitting is designed and manufactured at our facility in Rocky Hill, Connecticut — the same American workmanship that has set the standard for stainless steel rigging hardware since 1950.
Cold-Worked Production Hayn fittings are cold-worked, not cast. That distinction matters: the cold-working process refines grain structure, increases fatigue resistance, and produces a fundamentally stronger component — one built to perform when the load comes on it.
Precision Manufacturing Our Rocky Hill production floor runs CNC vertical mills, CNC lathes, large-capacity mill-turn centers, and waterjet cutting systems — all configured to produce hardware that meets exact specifications, every time.
75+ Years of Excellence Hayn has been engineering and manufacturing marine and architectural rigging hardware since 1950. That track record isn't just history, it's the design knowledge, failure data, and continuous improvement that goes into every product we make. 
  • Type 316 stainless steel construction for superior saltwater corrosion resistance
  • Manufactured in Rocky Hill, Connecticut to Hayn's proprietary tolerances
  • Precision-machined using advanced CNC manufacturing equipment



  • Engineered for seamless integration in marine and architectural rigging systems

  • Short lead times on both standard and custom components

  • Backed by 75 years of marine and architectural hardware expertise

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Let's Build Something Together

 Hayn has been engineering precision rigging hardware since 1950. So whatever your project demands, you're building with hardware that's been proven at sea and on structure for generations. 
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