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PHONE HOTLINE: 800-346-4296 E-MAIL: sales@hayn.com
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PHONE HOTLINE: 800-346-4296 E-MAIL: sales@hayn.com
Contact Us
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Dome Nut – Through Hole

Hayn Dome Nuts (Through Hole) are Type 316 stainless steel caps that thread onto Concealed Thread Termination Stud hardware at the end vertical or post, with a wire clearance hole through the dome that allows the cable to pass through the fitting to the other side. 

Strong Where It Matters

Dome Nut – Through Hole

The through hole distinguishes this dome nut from the no-hole version — it is the correct choice for intermediate post positions or any installation where the cable continues through the post rather than terminating at it, while still providing the same clean domed finish at the post face. Available in 1/4-28 right hand thread (9/16" outside diameter) and 5/16-24 right hand thread (3/4" outside diameter), both compatible with the Hayn Threaded Termination Stud system for wire up to 1/4". For fixed termination ends where no cable pass-through is needed, see the Dome Nut No Through Hole. 
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dome nut through hole

Dome Nut – Through Hole

Part # Thread Size Outside Dia. Thickness
DN6 1/4-28 RH 9/16″ 1/4″
DN8 5/16-24 RH 3/4″ 9/32″
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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