S-97424A110 3/16"-100 x 3/4" Thumb Screws

Key Features & Benefits at a Glance

• Corrosion-resistant 18-8 stainless steel construction ensures long-term durability in harsh environments, reducing replacement frequency and maintenance costs.
• Ultra-fine 3/16"-100 thread spacing with Class 3A fit delivers precise, secure fastening in delicate assemblies, minimizing the risk of cross-threading and part damage.
• Knurled Acetal plastic head provides a firm, non-slip grip for easy hand-tightening without tools, enhancing operator efficiency and safety.
• High tensile strength of 60,000 psi offers reliable load-bearing capacity, supporting robust performance in demanding mechanical applications.
• Ball tip design facilitates smooth insertion and alignment in pre-tapped holes or components, speeding up installation and reducing assembly errors.
• Full RoHS 3 and REACH compliance ensures environmental safety and regulatory adherence, making it suitable for global supply chains and sensitive industries.
• Right-hand UNS thread with full threading enables consistent engagement and uniform clamping force across the entire length, improving joint integrity.

Professional Applications & Engineering Value

This ultra-fine thread thumb screw is engineered to address common challenges in precision assemblies, such as electronics, optical devices, and instrumentation, where minute adjustments and secure fastening are critical. The 18-8 stainless steel material resists oxidation and chemical exposure, ideal for humid or corrosive settings, while the Class 3A thread fit ensures tight tolerances that prevent loosening under vibration. The Acetal plastic head, rated up to 180°F, combines lightweight handling with thermal stability, reducing heat transfer and electrical conductivity risks. By integrating knurled texture and a ball tip, it streamlines manual operations in confined spaces, enhancing productivity and reducing tool dependency for maintenance and prototyping workflows.

Specification Summary & Compliance

This thumb screw adheres to UNS thread standards with a Class 3A thread fit for high precision and dimensional accuracy. It features a 3/16"-100 ultra-fine thread with a diameter of 0.188" and a length of 3/4", ensuring consistent performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmental and safety standards in industrial use.