S-93005A558 1/2"-13 x 1 1/2" 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
- Enhanced manual torque application with a four-arm thumb head design for superior grip and easy hand-tightening without tools.
- Exceptional load-bearing capacity thanks to 180,000 psi tensile strength, ideal for high-stress industrial assemblies.
- Superior corrosion resistance and durability from the black-oxide steel finish, extending service life in harsh environments.
- Reliable and precise thread engagement with Class 2A fit UNC coarse threads, ensuring consistent performance and easy installation.
- Versatile fastening with full threading and extended tip, allowing secure attachment across the entire length for various material thicknesses.
- High hardness for wear resistance with Rockwell C40 rating, minimizing deformation under repeated use.
- Compliance with global environmental standards including RoHS 3 and REACH, making it safe for regulated industries.
Professional Applications & Engineering Value
This black-oxide steel thumb screw is engineered to address common industrial challenges such as frequent adjustments and exposure to corrosive conditions. The four-arm head design provides excellent manual grip, reducing installation time and eliminating the need for tools in maintenance-heavy environments like machinery, electrical enclosures, and automotive assemblies. Its fully threaded UNC coarse spacing and extended tip ensure quick alignment and secure fastening in wood, metal, or plastic components. With a high tensile strength of 180,000 psi and Rockwell C40 hardness, it withstands vibrational loosening and heavy loads, making it a reliable choice for industrial thumb screw applications where durability and ease of use are critical.
Specification Summary & Compliance
This thumb screw adheres to UNC thread standards with a Class 2A thread fit for precise dimensional accuracy. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances. Manufactured from steel with black-oxide finish, it features a right-hand thread direction, coarse thread spacing, and fully threaded design for consistent performance in industrial settings.
