Sizing Guide

The Stud/Stemball Selden Rigging Screw: A Comprehensive Guide

Introduction

The Stud/Stemball Selden Rigging Screw is a high-performance component used in marine rigging, offering superior durability, corrosion resistance, and precise tensioning capabilities. Manufactured by Selden, a leading name in sailing hardware, this rigging screw is designed to withstand extreme loads while ensuring long-term reliability.

Material and Construction

The body of the rigging screw is made from chrome-plated aluminum bronze, a material known for its exceptional strength and resistance to corrosion. The stud terminal and stemball end are crafted from high-grade marine stainless steel, ensuring robustness and longevity. This combination minimizes the risk of thread seizure under heavy loads, a common issue with all-stainless steel rigging screws.

Design Features

• Stud/Stemball Configuration: One end features a stud terminal, designed to connect to wire, while the other end has a stemball fitting, allowing for secure attachment.

• Adjustable Length: The screw allows for precise tensioning, with minimum and maximum lengths varying by size.

• Breaking Load Capacity: Ranges from 1,550 kg to 9,500 kg, depending on the thread and stemball size.

• Thread and Stemball Sizes: Available in multiple configurations, including 1/4" (9mm, 11mm), 5/16" (9mm, 11mm, 14mm), 3/8" (11mm, 14mm), 7/16" (11mm, 14mm), 1/2" (11mm, 14mm), and 5/8" (14mm).

Advantages Over Stainless Steel Rigging Screws

Unlike traditional all-stainless steel rigging screws, the bronze/stainless combination offers several advantages:

• Reduced Risk of Seizing: Stainless steel threads can seize under heavy loads due to galling. The bronze body mitigates this issue.

• Enhanced Corrosion Resistance: Bronze is highly resistant to marine corrosion, making it ideal for long-term use.

• Improved Longevity: The combination of materials ensures a longer lifespan compared to standard stainless steel screws.

Applications

The Stud/Stemball Selden Rigging Screw is widely used in:

• Sailing Yachts: Essential for tensioning standing rigging.

• Architectural Rigging: Used in structural applications requiring high load-bearing capacity.

• Industrial Use: Suitable for heavy-duty tensioning in various engineering fields.

Conclusion

The Stud/Stemball Selden Rigging Screw is a superior choice for marine and industrial rigging applications. Its bronze/stainless steel construction, high load capacity, and adjustable length make it a reliable and durable solution for demanding environments. Whether for sailing, architecture, or industrial use, this rigging screw ensures optimal performance and longevity.