S-91035A590 10-32 x 1 1/4" ASTM A581, ASTM A582 Captive Panel Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 stainless steel construction, ideal for harsh industrial environments
• Enhanced manual grip and torque application with a knurled round head, reducing tool dependency and speeding up assembly
• Secure and precise fastening with 10-32 UNF fine thread and Class 2A fit, ensuring reliable performance in panel applications
• Optimized for captive panel use through partial threading, preventing over-insertion and simplifying alignment
• Dual drive versatility with slotted drive style, accommodating both manual and tool-assisted installation
• Compliance with rigorous industry standards including ASTM A581, ensuring material consistency and mechanical reliability
• Environmentally safe manufacturing with RoHS 3 and REACH compliance, meeting global regulatory requirements

Professional Applications & Engineering Value

This 18-8 stainless steel thumb screw is engineered to address common challenges in industrial fastening, such as frequent adjustments and exposure to corrosive elements. The knurled head provides exceptional grip, allowing for quick hand-tightening without slipping, which is crucial in captive panel screw applications where tool access may be limited. Its 10-32 UNF fine thread and Class 2A fit deliver precise engagement, reducing the risk of cross-threading in electronic enclosures, machinery panels, and instrumentation. Made from durable 18-8 stainless steel, it resists rust and wear, ensuring long-term reliability in demanding settings like aerospace, automotive, and telecommunications. The partially threaded design further enhances functionality by preventing over-tightening and simplifying maintenance cycles.

Specification Summary & Compliance

This thumb screw adheres to Class 2A thread fit for consistent dimensional accuracy and features a 10-32 UNF fine thread with right-hand direction. It meets ASTM A581 specifications for material quality and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial use.