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PHONE HOTLINE: 800-346-4296 E-MAIL: sales@hayn.com
Contact Us
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NAVTEC BY HAYN

The NAVTEC F235 Rod Stemball Micro is machined from Nitronic 50 and delivers the same fatigue life extension as the tapered stemball in a smaller head profile, designed for installations where fitting clearance is limited across NAVTEC rod sizes from -04 through -60.

NAVTEC by Hayn - Strong Where It Matters

NAVTEC F235 Rod Stemball – Micro

The Micro Stemball uses the same ball-seat articulation principle as the tapered version to distribute stress at the rod terminal interface rather than concentrating it at a fixed end fitting, which is the mechanism behind NAVTEC's original stemball development goal of extending rod rigging service life. The smaller head diameter makes it the right choice where the tapered stemball's larger profile creates a clearance problem at the spreader tip or chainplate fitting, and Nitronic 50 construction ensures material compatibility with the rod itself throughout the assembly. Compatible with NAVTEC L500 Spreader Tip Cups and K150/K550 Micro Stemball Tangs, all sold separately.
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NAVTEC F235 Rod Stemball – Micro

NAVTEC F235 Rod Stemball – Micro

Hayn Part # NAVTEC Part # W-Rod Size RAD-Seat Radius L-Length HD-Head Dia. HT-Head Thickness H-Hardware Factor Weight lbs.
HYN-MSB-04 F235-004 -04 1/4″ 1.04″ 0.38″ 0.09″ 0.00″ 0.005
HYN-MSB-06 F235-006 -06 9/32″ 1.20″ 0.43″ 0.107″ 1/32″ 0.010
HYN-MSB-08 F235-008 -08 5/16″ 1.36″ 0.49″ 0.133″ 1/16″ 0.012
HYN-MSB-10 F235-010 -10 11/32″ 1.51″ 0.54″ 0.124″ 1/64″ 0.015
HYN-MSB-12 F235-012 -12 25/64″ 1.70″ 0.60″ 0.146″ 5/64″ 0.024
HYN-MSB-15 F235-015 -15 13/32″ 1.79″ 0.64″ 0.159″ 1/32″ 0.028
HYN-MSB-17 F235-017 -17 15/32″ 2.00″ 0.72″ 0.128″ 0.00″ 0.036
HYN-MSB-22 F235-022 -22 17/32″ 2.27″ 0.81″ 0.150″ 0.00″ 0.054
HYN-MSB-30 F235-030 -30 5/8″ 2.65″ 0.95″ 0.170″ 0.00″ 0.085
HYN-MSB-40 F235-040 -40 11/16″ 3.00″ 1.08″ 0.200″ 0.00″ 0.127
HYN-MSB-48 F235-048 -48 25/32″ 3.40″ 1.22″ 0.215″ 1/32″ 0.186
HYN-MSB-60 F235-060 -60 15/16″ 3.99″ 1.43″ 0.181″ 0.00″ 0.307
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.
NAVTEC ENGINEERING STANDARDS NAVTEC components are engineered to perform under the exact conditions that demand the most from your rigging — offshore passages, high-load racing applications, and everything in between. Every fitting is precision-machined to tight tolerances, built from high-grade stainless steel, and designed to integrate seamlessly into rod rigging systems where failure is not an option. 
YOUR EXCLUSIVE SOURCE FOR NAVTEC Hayn is the sole authorized manufacturer and supplier of NAVTEC rigging components. That means every part you order is made to the original specifications, backed by Hayn's manufacturing expertise, and supported by our team in Rocky Hill. There is no other legitimate source for new NAVTEC product — what you get here is the real thing. 
  • 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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