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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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Hayn Circular Ring Pins

 Hayn Circular Ring Pins are Type 316 stainless steel retaining pins used to secure clevis and toggle connections in marine rigging and lifeline systems. 

Strong Where It Matters

Hayn Circular Ring Pins

Circular ring pins provide a simple, reliable method of locking a clevis pin in place, preventing withdrawal under vibration or load cycling without requiring tools for installation or removal. Available in four sizes with ring diameters from 7/16" to 7/8" and pin sizes from 3/16" to 3/8", they cover the range of clevis connections common in Hayn lifeline and rigging hardware. Manufactured from Type 316 stainless steel for corrosion resistance in saltwater environments.
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CR1-1-1

Circular Ring Pins

316 Stainless Steel

Circular ring pins are 316 stainless steel. Ring sizes range from 3/4″ – 7/8″.

Circular Ring Pins
Part # Ring Size Pin Size Weight lbs.
CR1 3/4″ 3/16″-5/16″ 0.002
CR2 5/8″ 3/16″-5/16″ 0.002
CR3 7/16″ 3/16″ 0.001
CR4 7/8″ 5/16″-3/8″ 0.004
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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