S-90282A201 1/4"-20 x 1 1/2" Thumb Screws

Key Features & Benefits at a Glance

• Effortless hand-tightening with a wide 1" knurled head for superior grip without tools
• Prevents surface damage thanks to the permanent swivel tip that adjusts up to 7.5° for secure, mar-free fastening
• Exceptional durability and corrosion resistance provided by the black-oxide steel finish and high Rockwell B85 hardness
• Reliable load-bearing performance with an 80,000 psi tensile strength for demanding industrial applications
• Quick and easy coarse thread engagement with a fully threaded 1/4"-20 UNC Class 2A fit for rapid assembly
• Space-saving low-profile round head design ideal for applications with limited clearance
• Guaranteed regulatory compliance for global markets, meeting RoHS 3 and REACH standards

Professional Applications & Engineering Value

This black-oxide steel thumb screw is engineered to solve common industrial assembly challenges. The permanent swivel tip is a critical feature, accommodating minor misalignments and distributing clamping force evenly to prevent damage to sensitive components or finished surfaces. This is vital in electronics, machinery panels, and frequent-access enclosures. Combined with the coarse UNC thread and full threading, it enables rapid installation and removal, significantly reducing maintenance downtime. The knurled head ensures a firm grip even with greasy hands or when wearing gloves, enhancing worker safety and efficiency. Built from robust steel with a 80,000 psi tensile strength, it delivers the reliability required for heavy-duty fastening tasks without the need for constant retightening.

Specification Summary & Compliance

This thumb screw adheres to UNC coarse thread standards with a precise Class 2A thread fit for consistent performance. Key dimensional specifications include a 1/4"-20 thread size, a 1-1/2" length, and a low-profile round head. The product is manufactured to be RoHS 3 (2015/863/EU) compliant under exemption 6(a)-I and is REACH (EC 1907/2006) compliant, ensuring it meets stringent international environmental and safety regulations for industrial components.