S-90079A634 3/8"-16 x 3" Thumb Screws

Key Features & Benefits at a Glance

• Superior hand-tightening capability with a 1 1/4" knurled head for excellent grip and torque application without tools
• Enhanced corrosion resistance due to the black-oxide steel finish, extending service life in various industrial environments
• High mechanical strength with 180,000 psi tensile strength and Rockwell C40 hardness for reliable performance in demanding applications
• Quick and easy coarse thread engagement provided by the 3/8"-16 UNC thread form, reducing installation time
• Secure and precise thread fit ensured by Class 2A thread tolerance for consistent assembly quality
• Versatile tip design with an extended 3/16" tip for improved alignment and easier insertion into components
• Compliance with international environmental standards including RoHS 3 and REACH for safe and sustainable use

Professional Applications & Engineering Value

This black-oxide steel thumb screw is engineered to address common assembly challenges in industrial settings. The knurled head provides exceptional manual grip, eliminating the need for tools in applications requiring frequent adjustments or access panels. Its 3/8"-16 UNC coarse thread enables rapid installation in machinery, electronic enclosures, and fixtures, while the partial threading offers optimal engagement without unnecessary thread length. The extended tip facilitates alignment in blind holes, reducing cross-threading risks. With 180,000 psi tensile strength, it withstands high-stress conditions in automotive, manufacturing, and maintenance operations, ensuring long-term reliability and reduced downtime.

Specification Summary & Compliance

This thumb screw features a 3/8"-16 UNC coarse thread with Class 2A thread fit for standard industrial tolerance. It is manufactured from high-strength steel with a black-oxide surface treatment and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards, ensuring environmental safety and material reliability.