S-91830A301 8-32 x 5/16" Thumb Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and long-term reliability.
• Effortless hand-tightening and adjustment thanks to the knurled round head design, providing excellent grip without tools.
• High tensile strength of 80,000 psi ensures secure fastening under load, reducing the risk of failure in demanding applications.
• Precise and reliable thread engagement with UNC coarse threads and Class 2A fit, enabling quick assembly and consistent performance.
• Durable and wear-resistant with Rockwell B83 hardness, maintaining thread integrity and head texture through repeated use.
• Fully threaded shank allows for maximum adjustability and holding power along the entire 5/16" length.
• Compliance with RoHS 3 and REACH regulations ensures environmental safety and meets global industry standards for hazardous substances.

Professional Applications & Engineering Value

This 8-32 UNC thumb screw in 18-8 stainless steel is engineered to solve common industrial fastening challenges, such as frequent adjustments and exposure to corrosive elements. The knurled head offers a non-slip surface, enabling quick hand operations in tight spaces or where tools are impractical, reducing assembly time and improving workflow efficiency. Its coarse thread design resists cross-threading and allows for faster installation compared to fine threads, while the fully threaded body ensures uniform stress distribution. Ideal for industrial applications like machinery panels, electronic enclosures, and prototyping, this screw provides a reliable, reusable fastening solution that withstands vibration and environmental stressors, minimizing maintenance needs and downtime.

Specification Summary & Compliance

This thumb screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy and ease of assembly. Key specifications include a thread size of 8-32, length of 5/16", and thread diameter of 0.164". It is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from restricted hazardous substances and suitable for global supply chains.