S-90210A311 3/8"-16 x 1 1/2" Thumb Screws

Key Features & Benefits at a Glance

• Enhanced grip and torque application with knurled texture on the low-profile round head for secure manual tightening without tools
• Reduced surface damage and marring thanks to the removable swivel tip that distributes pressure evenly and pivots up to 10°
• Superior corrosion resistance and durability from black-oxide steel construction, ideal for industrial environments
• High load-bearing capacity with 70,000 psi tensile strength, ensuring reliable performance in demanding applications
• Quick and easy coarse thread engagement using UNC 3/8"-16 threading for rapid adjustments and secure fastening
• Precise thread fit and interchangeability with Class 2A tolerance, providing consistent performance with standard components
• Environmental and regulatory compliance meeting RoHS 3 standards, suitable for global manufacturing requirements

Professional Applications & Engineering Value

This black-oxide steel thumb screw is engineered to solve common industrial challenges like frequent adjustments and component protection. The low-profile knurled round head delivers exceptional manual grip, reducing slippage in high-vibration settings, while the removable swivel tip prevents surface damage on delicate materials—ideal for electronics, machinery panels, and fixtures. With UNC coarse threads and Class 2A fit, it ensures swift installation and reliable holding power in assembly lines, maintenance access points, and clamping systems. The 70,000 psi tensile strength and corrosion-resistant finish make it a durable choice for OEM and MRO applications, streamlining operations without compromising on security.

Specification Summary & Compliance

This thumb screw adheres to UNC 3/8"-16 coarse thread specifications with a Class 2A thread fit for precise dimensional accuracy. It meets RoHS 3 (2015/863/EU) compliance under exemption 6(a)-I, ensuring it is free of restricted substances except for lead as an alloying element in steel. Manufacturing follows standard inch measurements, with full threading and a right-hand thread direction for consistent performance in industrial fastening systems.