S-90113A166 1/4"-20 x 1" Thumb Screws

Key Features & Benefits at a Glance

• High corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments.
• Easy hand-tightening and removal thanks to the external hex thumb head design, reducing tool dependency.
• Reliable thread engagement with UNC coarse threading and Class 2A fit, ensuring secure fastening in various materials.
• Exceptional mechanical strength offering 80,000 psi tensile strength and Rockwell B83 hardness for heavy-duty applications.
• Full threading along the 1" length provides maximum grip and adjustability in assemblies.
• Compliance with environmental regulations including RoHS 3 and REACH, supporting sustainable and safe industrial use.
• Right-hand thread direction for standard installation, compatible with common assembly practices.

Professional Applications & Engineering Value

This 1/4"-20 thumb screw in 18-8 stainless steel delivers robust performance in demanding settings like machinery, electronic enclosures, and automotive components. Its external hex drive and thumb head enable quick manual adjustments without tools, saving time in maintenance and assembly lines. The UNC coarse thread and Class 2A fit prevent cross-threading and ensure consistent clamping force, while the fully threaded design enhances versatility for variable thickness materials. With high tensile strength and corrosion resistance, it addresses common issues of wear and environmental degradation, making it a reliable choice for industrial thumb screws in OEM and MRO applications.

Specification Summary & Compliance

This thumb screw adheres to precise dimensional standards, including a 1/4"-20 UNC coarse thread with Class 2A thread fit for reliable tolerance. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety and regulatory alignment for global industrial use.