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PHONE HOTLINE: 800-346-4296 E-MAIL: sales@hayn.com
Contact Us
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Lifeline Interlocking Gate Eyes – Swivel Type

Hayn Lifeline Interlocking Gate Eyes (Swivel Type) are Type 316 stainless steel swage terminal fittings with an integrated swivel interlocking eye, allowing two gate ends to connect directly to each other while rotating freely to prevent cable twist at the gate interface.

Strong Where It Matters

Lifeline Interlocking Gate Eyes – Swivel Type

The swivel function is the key differentiator from the standard interlocking gate eye — where a fixed interlocking eye can transmit rotational stress into the lifeline as the gate opens and closes repeatedly, the swivel type allows the eye to rotate independently of the swage body, keeping cable twist out of the assembly over time. Available in machine swage configuration for imperial wire from 1/8" through 1/4" and metric wire from 4mm through 5mm, with Handy Crimp stud options for 1/8" and 3/16" wire. Hardware factor dimensions are published for all sizes to simplify assembly length calculations. 
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lifeline interlocking gate eyes swivel type

Imperial Wire Sizes – Machine Swage

Part # W-Wire ⌀ HD-Head Diameter HT-Head Thickness H-Hardware Factor Weight lbs.
SWELLI18 1/8″ 19/32″ 9/32″ 3 11/16″ 0.23
SWELLI532 5/32″ 19/32″ 9/32″ 3 13/16″ 0.25
SWELLI316 3/16″ 19/32″ 9/32″ 3 15/16″ 0.27
SWELLI14 1/4″ 19/32″ 9/32″ 4 7/16″ 0.32

Metric Wire Sizes – Machine Swage

Part # W-Wire ⌀ HD-Head Diameter HT-Head Thickness H-Hardware Factor Weight lbs.
SWELLIM04 4mm 19/32″ 9/32″ 3 13/16″ 0.25
SWELLIM05 5mm 19/32″ 9/32″ 3 15/16″ 0.27

With Handy Crimp Stud

Part # W-Wire ⌀ HD-Head Diameter HT-Head Thickness H-Hardware Factor Weight lbs.
SWECLLI18 1/8″ 19/32″ 9/32″ 4 1/16″ 0.22
SWECLLI316 3/16″ 19/32″ 9/32″ 3 13/16″ 0.26
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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