S-90282A249 1/2"-13 x 3" Thumb Screws

Key Features & Benefits at a Glance

• Effortless hand-tightening and loosening with a wide 1 1/4" knurled head for superior grip, even with gloves or oily hands.
• Prevents surface marring and distributes load evenly thanks to the permanent swivel tip that accommodates a 7.5° maximum angle.
• Exceptional strength and durability for demanding applications with an 80,000 psi tensile strength and Rockwell B85 hardness black-oxide steel construction.
• Reliable and quick assembly ensured by a fully threaded Class 2A UNC coarse thread, designed for easy starting and rapid installation.
• Low-profile, space-saving design allows for use in confined areas where standard thumb screws might not fit.
• Enhanced corrosion resistance from the black-oxide finish, protecting the screw in various industrial environments.
• Compliance with global environmental standards including RoHS 3 and REACH, ensuring they meet stringent regulatory requirements.

Professional Applications & Engineering Value

This heavy-duty thumb screw is engineered to solve common fastening challenges in industrial maintenance, machinery, and fixture assembly. The black-oxide steel construction provides a robust solution with high tensile strength (80,000 psi) to withstand significant operational stress and vibration. The low-profile, knurled head offers a secure grip for manual adjustments without specialized tools, speeding up assembly and disassembly processes. A key engineering feature is the permanent swivel tip, which compensates for minor misalignments and prevents damage to contact surfaces, making it ideal for applications involving delicate materials or requiring frequent repositioning. Its Class 2A UNC coarse thread ensures a reliable fit and quick engagement, reducing installation time and improving workflow efficiency on the production line.

Specification Summary & Compliance

This thumb screw adheres to precise dimensional standards, featuring a 1/2"-13 UNC thread with Class 2A fit and coarse spacing for reliable performance. Manufacturing and material specifications confirm compliance with RoHS 3 (2015/863/EU) under exemption 6(a)-I and REACH (EC 1907/2006), ensuring environmental responsibility and suitability for global industrial markets.