S-95488A312 1/4"-20 x 1" Thumb Screws

Key Features & Benefits at a Glance

• Effortless hand-tightening with a knurled, round head for superior grip without tools, ideal for frequent adjustments.
• Exceptional durability and corrosion resistance thanks to the solid brass construction, ensuring reliable performance in various environments.
• High mechanical strength with a 50,000 psi tensile strength and Rockwell B78 hardness for demanding applications.
• Quick and secure fastening with a coarse UNC 1/4"-20 thread and Class 2A fit, providing easy starts and robust holding power.
• Versatile low-profile design with a 1/2" head diameter and 1" fully threaded length for use in confined spaces.
• Safe for regulated industries as it is RoHS 3 compliant, meeting environmental and safety standards.
• Reliable right-hand thread ensures standard, intuitive installation for consistent operation.

Professional Applications & Engineering Value

This 1/4-20 UNC brass thumb screw is engineered to solve common industrial challenges where tool-free, rapid access and secure fastening are critical. The knurled head provides a non-slip surface, enabling quick hand-tightening in environments like electronic enclosures, machinery panels, and prototyping setups, reducing downtime. Made from brass, it offers excellent corrosion resistance, making it suitable for use in humid or mildly corrosive conditions without compromising integrity. The coarse thread and Class 2A thread fit ensure easy alignment and strong engagement, minimizing cross-threading risks. With a low-profile, round head and full threading, it delivers consistent clamping force in space-constrained applications, enhancing assembly efficiency and maintenance workflows for engineers and technicians.

Specification Summary & Compliance

This thumb screw adheres to UNC thread standards with a Class 2A thread fit for precise dimensional accuracy and reliable performance. It is manufactured to meet RoHS 3 (2015/863/EU) compliance under exemption 6(c) for lead in copper alloys, ensuring it is safe for use in regulated industrial and electronic applications. Key specifications include a 1/4"-20 thread size, 1" length fully threaded, and a right-hand thread direction, providing consistent quality and interoperability in fastening systems.