S-91185A815 1/4"-20 x 1 1/2" Thumb Screws

Key Features & Benefits at a Glance

• Effortless hand-tightening with a multi-lobe head design for superior grip and torque without tools
• Corrosion-resistant performance thanks to 18-8 Stainless Steel construction, ideal for harsh environments
• Durable, non-marring head made from black Acetal Plastic to protect surfaces and resist wear
• Reliable coarse threading with UNC 1/4"-20 and Class 3A fit for quick assembly and vibration resistance
• Wide temperature tolerance with a head operating range of 32° to 180° F for versatile applications
• Secure partial threading ensuring precise engagement and reduced risk of cross-threading
• Compliance with global standards including RoHS 3 and REACH for safe, environmentally conscious use

Professional Applications & Engineering Value

These 1/4"-20 thumb screws combine the strength of 18-8 Stainless Steel with the ergonomic advantages of a black Acetal Plastic multi-lobe head, addressing common industrial challenges like frequent adjustments and corrosion in machinery, electronics, and assembly fixtures. The UNC coarse thread and Class 3A fit enable rapid, secure fastening without specialized tools, reducing downtime. The plastic head resists chemicals and impact, while the stainless body ensures longevity in temperatures from 32° to 180° F, making these screws ideal for hand-tightening applications in maintenance panels, prototyping, and equipment requiring regular access.

Specification Summary & Compliance

This product features a 1/4"-20 UNC coarse thread with Class 3A thread fit for precise dimensional accuracy, partial threading up to a minimum of 1", and a right-hand thread direction. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for industrial use without hazardous substances.