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PHONE HOTLINE: 800-346-4296 E-MAIL: sales@hayn.com
Contact Us
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Swage Aircraft Eyes – MS Style

Hayn Swage Aircraft Eyes (MS Style) are Type 316 stainless steel flat eye swage terminals conforming to MS20668 military specification, providing a standardized, low-profile wire termination for aircraft cable and general rigging applications across wire diameters from 1/16" through 1/2". 

Strong Where It Matters

Swage Aircraft Eyes – MS Style

The MS style flat eye geometry is the standard for aircraft cable terminations where a thin, flush eye head is required for connection to clevis fittings, turnbuckle eyes, and other hardware with shallow jaw clearance. Conformance to MS20668 specification means part numbers cross-reference directly to military and aerospace hardware catalogs, simplifying specification in applications where that standardization matters. Available in 12 configurations with hole diameters from 3/16" through 5/8" and hardware factors from 9/16" through 2-5/8", covering the full range of aircraft cable wire diameters in common use. 
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swage aircraft eyes ms style

Swage Aircraft Eyes – MS Style

Part # MS Style # W-Wire Dia. D-Hole Dia. HT-Head Thickness H-Hardware Factor Weight lbs.
RE2 20668-2 1/16″ 3/16″ 3/32″ 9/16″ 0.01
RE3 20668-3 3/32″ 3/16″ 7/64″ 13/16″ 0.02
RE4 20668-4 1/8″ 3/16″ 3/16″ 13/16″ 0.03
RE5 20668-5 5/32″ 1/4″ 13/64″ 15/16″ 0.05
RE6 20668-6 3/16″ 5/16″ 1/4″ 1″ 0.09
RE7 20668-7 7/32″ 5/16″ 19/64″ 1-1/8″ 0.13
RE8 20668-8 1/4″ 3/8″ 5/16″ 1-1/4″ 0.19
RE9 20668-9 9/32″ 7/16″ 21/64″ 1-3/8″ 0.27
RE10 20668-10 5/16″ 7/16″ 11/32″ 1-1/2″ 0.38
RE12 20668-12 3/8″ 1/2″ 3/8″ 2-1/16″ 0.57
RE14 20668-14 7/16″ 9/16″ 3/8″ 2-3/8″ 0.77
RE16 20668-16 1/2″ 5/8″ 15/32″ 2-5/8″ 1.05
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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