S-91035A570 10-32 x 1 1/8" ASTM A581, ASTM A582 Captive Panel Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh industrial environments
• Enhanced manual grip and torque application thanks to the knurled round head design, eliminating the need for tools in many applications
• Precise and secure fastening ensured by the Class 2A thread fit and 10-32 UNF fine thread for reliable panel attachments
• Optimized for captive panel applications with partial threading to prevent over-insertion and simplify alignment
• Dual drive compatibility featuring a slotted drive for additional tool use alongside the primary thumb operation
• Compliance with major industry standards including ASTM A581 for material quality, ensuring consistent mechanical properties
• Environmentally responsible manufacturing with full RoHS 3 and REACH compliance, meeting global regulatory requirements

Professional Applications & Engineering Value

This 10-32 UNF thumb screw is engineered to solve critical challenges in captive panel and electronic enclosure assembly. The 18-8 stainless steel material provides excellent resistance to oxidation and corrosion, which is vital for maintaining integrity in environments with moisture or chemical exposure. The knurled head offers a non-slip surface, allowing operators to apply sufficient torque by hand, which speeds up installation and maintenance cycles while reducing the risk of cross-threading. The partially threaded design is specifically tailored for captive panel screw applications, preventing the screw from being over-tightened or lost, thereby enhancing operational safety and reducing assembly time in high-volume production lines for industrial machinery, telecommunications equipment, and computer chassis.

Specification Summary & Compliance

This thumb screw adheres to precise dimensional standards, featuring a 10-32 UNF thread with Class 2A fit for consistent engagement and a fine thread spacing for secure fastening. The manufacturing and material specifications conform to ASTM A581, ensuring high tensile strength and durability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and suitable for use in regulated global markets.