S-95536A223 M3.5 x 14.5 mm ASTM A581, ASTM A582 Captive Panel 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.
• Enhanced manual grip and torque application thanks to the fully knurled round head, allowing for quick tool-free adjustments.
• Secure and rapid installation with coarse M3.5 x 0.6 mm metric threads, reducing cross-threading risks in panel assemblies.
• Optimized for captive panel applications featuring a partially threaded shank that prevents over-insertion and maintains alignment.
• Dual drive versatility with a slotted drive style, accommodating both manual thumb operation and standard screwdriver use.
• Compliance with stringent industry standards including ASTM A581, ensuring consistent material quality and mechanical performance.
• Environmentally responsible manufacturing with full RoHS 3 and REACH compliance, meeting global regulatory requirements.

Professional Applications & Engineering Value

This M3.5 thumb screw is engineered to address common challenges in panel mounting and electronic enclosures where frequent access is required. The 18-8 stainless steel offers excellent resistance to oxidation and chemical exposure, prolonging service life in demanding settings. The knurled head provides a non-slip surface, enabling secure handling even with gloved hands, while the coarse thread design ensures fast engagement and reduced assembly time. As a captive panel screw, its partially threaded body prevents loss and simplifies maintenance in telecommunications, industrial control systems, and machinery panels, delivering reliable, repeatable fastening without specialized tools.

Specification Summary & Compliance

This thumb screw features a metric M3.5 x 0.6 mm coarse thread with a right-hand thread direction and a thread length of 5.5 mm. The overall length is 14.5 mm, and the head diameter measures 8 mm. It conforms to ASTM A581 specifications for material consistency 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 supply chains.