S-90179A192 8-32 x 3/8" Thumb Screws
Thumb Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Effortless manual installation and removal thanks to the spade-shaped thumb head design that provides superior grip without tools
- Exceptional durability and resistance to wear from high-strength steel construction with Rockwell B55 hardness
- Reliable load-bearing capacity with a tensile strength of 40,000 psi, suitable for demanding industrial applications
- Secure and precise thread engagement ensured by the Class 2A thread fit and UNC coarse thread profile
- Enhanced stability and surface distribution from the integrated flange, reducing the risk of loosening under vibration
- Full-length threading for maximum fastening flexibility, allowing the screw to be used at any point along its length
- Environmentally responsible manufacturing with full compliance to RoHS 3 regulations, free from hazardous substances
Professional Applications & Engineering Value
This 8-32 UNC coarse thread steel thumb screw is engineered to address common challenges in industrial maintenance, electronics assembly, and machinery access panels. The spade head design enables quick hand-tightening in tight spaces where tools are impractical, while the fully threaded body and Class 2A thread fit provide consistent clamping force and vibration resistance. Made from hardened steel with a Rockwell B55 rating and 40,000 psi tensile strength, it withstands repeated use without stripping or deformation. The integrated flange increases bearing surface, preventing pull-through in softer materials—making it ideal for securing covers, components, and fixtures in OEM and MRO environments.
Specification Summary & Compliance
This thumb screw adheres to UNC coarse thread standards with a Class 2A thread fit for consistent interchangeability. Dimensions include a thread size of 8-32, 0.164" thread diameter, 3/8" length, and 0.281" flange diameter. Manufacturing complies with RoHS 3 (2015/863/EU) requirements, ensuring environmental safety and material quality for global industrial use.
