S-91035A400 8-32 x 5/8" ASTM A581, ASTM A582 Captive Panel Screws

Key Features & Benefits at a Glance

• Effortless manual installation with a knurled round thumb head for secure grip and tool-free operation
• Superior corrosion resistance thanks to 18-8 Stainless Steel construction, ideal for harsh environments
• Reliable coarse UNC threading for quick engagement and strong holding power in panel assemblies
• Precision Class 2A thread fit ensures consistent performance and easy installation
• Durable and compliant material meeting ASTM A581 specifications for quality and performance
• Safe for regulated industries with full compliance to RoHS 3 and REACH environmental standards
• Optimized for captive panel applications with partial threading to prevent over-insertion and loss

Professional Applications & Engineering Value

This 18-8 Stainless Steel Thumb Screw is engineered to solve common challenges in industrial panel assembly, such as the need for quick, tool-free access and resistance to corrosion in demanding conditions. The knurled round head provides excellent manual grip, reducing installation time and eliminating the risk of tool slippage. With its 8-32 UNC coarse thread and Class 2A fit, it offers fast, secure fastening in captive panel screw applications, ensuring panels remain securely mounted while allowing for easy removal. The partially threaded design prevents over-threading and screw loss, enhancing reliability in electronics, machinery, and enclosure systems where frequent maintenance is required.

Specification Summary & Compliance

This thumb screw features a 5/8" length with 8-32 UNC coarse threads and a Class 2A thread fit for precise dimensional accuracy. It is manufactured in compliance with ASTM A581 specifications and adheres to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material quality for professional use.