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Eye to Swage – Open Body

The Hayn Eye to Swage Open Body turnbuckle pairs a swage wire terminal with a fixed eye end in a forged bronze open body, offering direct visual confirmation of thread engagement and one of the broadest size ranges in the Hayn turnbuckle lineup. 

Strong Where It Matters

Eye to Swage Open Body

The open body design lets riggers see exactly how much thread is engaged at both ends during tensioning and inspection, which matters on a fitting that carries standing rig loads continuously. The forged bronze body resists corrosion while eliminating galling concerns between dissimilar metals at the threaded interface. Available in 20 imperial configurations covering wire diameters from 3/32" through 1", and 17 metric configurations from 3mm through 26mm, making this one of the most comprehensive turnbuckle options in the Hayn catalog for both marine and architectural applications. 
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Eye to Swage Open Body

Eye to Swage – Open Body

316 Stainless Steel

Eye to swage open body turnbuckle. Available for imperial wire sizes 3/32″ – 1″ and metric wire sizes 3mm – 26mm.

Imperial Wire Sizes
Part # Wire Ø Thread D - Hole Ø O - Open Length C - Closed Length L - Body HT - Head Thickness Weight lbs.
14TFBS332E 3/32″ 1/4-28 1/4″ 8-13/16″ 5-13/16″ 4-1/2″ 7/32″ 0.19
14TFBS18E 1/8″ 1/4-28 1/4″ 8-13/16″ 5-13/16″ 4-1/2″ 7/32″ 0.19
14TFBS532E 5/32″ 1/4-28 1/4″ 8-7/8″ 5-7/8″ 4-1/2″ 7/32″ 0.20
516TFBS532E 5/32″ 5/16-24 5/16″ 9-3/4″ 6-1/2″ 5″ 1/4″ 0.33
516TFBS316E 3/16″ 5/16-24 5/16″ 9-13/16″ 6-9/16″ 5″ 1/4″ 0.35
38TFBS316E 3/16″ 3/8-24 3/8″ 10-15/16″ 7-7/16″ 5-1/2″ 5/16″ 0.52
38TFBS732E 7/32″ 3/8-24 3/8″ 10-15/16″ 7-7/16″ 5-1/2″ 5/16″ 0.54
38TFBS14E 1/4″ 3/8-24 3/8″ 11″ 7-1/2″ 5-1/2″ 5/16″ 0.59
12TFBS14E 1/4″ 1/2-20 1/2″ 1′0-7/8″ 8-7/8″ 6-1/2″ 15/32″ 1.18
12TFBS932E 9/32″ 1/2-20 1/2″ 1′0-15/16″ 8-15/16″ 6-1/2″ 15/32″ 1.24
12TFBS516E 5/16″ 1/2-20 1/2″ 1′0-15/16″ 8-15/16″ 6-1/2″ 15/32″ 1.30
58TFBS516E 5/16″ 5/8-18 5/8″ 1′3-13/16″ 10-13/16″ 8″ 9/16″ 2.01
58TFBS38E 3/8″ 5/8-18 5/8″ 1′3-13/16″ 10-13/16″ 8″ 9/16″ 2.09
34TFBS716E 7/16″ 3/4-16 3/4″ 1′7-5/16″ 1′1-5/16″ 10″ 23/32″ 4.02
34TFBS12E 1/2″ 3/4-16 3/4″ 1′7-5/16″ 1′1-5/16″ 10″ 23/32″ 4.10
78TFBS916E 9/16″ 7/8-14 7/8″ 1′11-9/16″ 1′4-1/16″ 1′0-7/16″ 7/8″ 6.95
1TFBS58E 5/8″ 1-12 1″ 2′2-5/16″ 1′5-5/16″ 1′2-3/16″ 15/16″ 10.10
118TFBS34E 3/4″ 1 1/8-12 1-1/8″ 2′5-1/4″ 1′7-3/4″ 1′4″ 1-1/32″ 14.79
114TFBS78E 7/8″ 1 1/4-12 1-1/4″ 2′8-7/8″ 1′10-3/8″ 1′5-7/8″ 1-3/16″ 19.19
138TFBS1E 1″ 1 3/8-12 1-3/8″ 2′11-3/8″ 1′11-3/8″ 1′7-1/2″ 1-5/16″ 28.24
Metric Wire Sizes
Part # Wire Ø Thread D - Hole Ø O - Open Length C - Closed Length L - Body HT - Head Thickness Weight lbs.
14TFBSM03E 3mm 1/4-28 1/4″ 8-3/4″ 5-3/4″ 4-1/2″ 7/32″ 0.19
14TFBSM04E 4mm 1/4-28 1/4″ 8-7/8″ 5-7/8″ 4-1/2″ 7/32″ 0.20
516TFBSM04E 4mm 5/16-24 5/16″ 9-3/4″ 6-1/2″ 5″ 1/4″ 0.33
516TFBSM05E 5mm 5/16-24 5/16″ 9-13/16″ 6-9/16″ 5″ 1/4″ 0.35
38TFBSM05E 5mm 3/8-24 3/8″ 10-15/16″ 7-7/16″ 5-1/2″ 5/16″ 0.51
38TFBSM06E 6mm 3/8-24 3/8″ 11″ 7-1/2″ 5-1/2″ 5/16″ 0.59
12TFBSM06E 6mm 1/2-20 1/2″ 1′0-7/8″ 8-7/8″ 6-1/2″ 15/32″ 1.19
12TFBSM07E 7mm 1/2-20 1/2″ 1′0-15/16″ 8-15/16″ 6-1/2″ 15/32″ 1.24
12TFBSM08E 8mm 1/2-20 1/2″ 1′0-15/16″ 8-15/16″ 6-1/2″ 15/32″ 1.30
58TFBSM08E 8mm 5/8-18 5/8″ 1′3-13/16″ 10-13/16″ 8″ 9/16″ 2.01
58TFBSM10E 10mm 5/8-18 5/8″ 1′3-13/16″ 10-13/16″ 8″ 9/16″ 2.24
34TFBSM12E 12mm 3/4-16 3/4″ 1′7-5/16″ 1′1-5/16″ 10″ 23/32″ 4.15
78TFBSM14E 14mm 7/8-14 7/8″ 1′11-5/8″ 1′4-1/8″ 1′0-7/16″ 7/8″ 6.95
1TFBSM16E 16mm 1-12 1″ 2′2-5/16″ 1′5-5/16″ 1′2-3/16″ 15/16″ 10.10
118TFBSM19E 19mm 1 1/8-12 1-1/8″ 2′5-1/4″ 1′7-3/4″ 1′4″ 1-1/32″ 14.79
114TFBSM22E 22mm 1 1/4-12 1-1/4″ 2′8-7/8″ 1′10-3/8″ 1′5-7/8″ 1-3/16″ 19.19
138TFBSM26E 26mm 1 3/8-12 1-3/8″ 2′11-3/8″ 1′11-3/8″ 1′7-1/2″ 1-5/16″ 28.24
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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