S-90165A412 1/4"-20 x 1 1/4" Thumb Screws
Thumb Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Effortless hand-tightening and adjustment with a four-arm thumb head design requiring no tools
- Superior corrosion resistance from the black-oxide steel finish, extending service life in harsh industrial environments
- High-strength performance for demanding applications with a tensile strength of 180,000 psi and Rockwell C40 hardness
- Secure and reliable fastening ensured by the fully threaded UNC coarse thread with a precise Class 2A fit
- Reduces surface damage and marring thanks to the removable swivel tip that accommodates a 10° maximum angle
- Broad compatibility and easy installation with standard 1/4"-20 right-hand thread coarse spacing
- Safe for use in regulated industries as it is fully compliant with RoHS 3 and REACH environmental standards
Professional Applications & Engineering Value
This heavy-duty thumb screw is engineered to solve critical challenges in industrial assembly and maintenance. The black-oxide steel construction provides excellent durability and resistance to corrosion, making it ideal for machinery, electronic enclosures, and fixtures exposed to operational wear. The removable swivel tip is a key feature that prevents damage to contact surfaces, allowing for repeated adjustments without compromising the integrity of the fastened material. Combined with the UNC coarse thread and Class 2A fit, it delivers a secure, vibration-resistant connection that maintains grip under high stress. Its high tensile strength and hardness ensure it performs reliably in applications requiring frequent manual access, from production jigs to serviceable panels, reducing downtime and tool dependency.
Specification Summary & Compliance
This thumb screw adheres to UNC thread standards with a Class 2A fit for consistent dimensional accuracy and reliable engagement. It is manufactured from high-strength steel and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free of hazardous substances and suitable for global industrial and electronic applications.
