S-91882A346 8-32 x 1/2" 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
- Enhanced manual operation with knurled round head design for superior grip and torque application without tools
- Exceptional durability from black-oxide steel construction providing corrosion resistance and extended service life
- Reliable thread engagement with Class 2A thread fit ensuring precise installation and vibration resistance
- High strength performance with 70,000 psi tensile strength and Rockwell B84 hardness for demanding applications
- Quick installation through fully threaded 8-32 UNC coarse spacing design for faster assembly cycles
- Secure raised profile design for positive thumb positioning and comfortable repeated use
- Regulatory compliance meeting RoHS 3 and REACH standards for global industrial applications
Professional Applications & Engineering Value
This 8-32 UNC thumb screw with black-oxide steel construction addresses critical industrial fastening challenges where tool-free access and repeated adjustments are essential. The knurled head texture provides exceptional grip even with oily hands or gloves, eliminating slippage during tightening in equipment panels, access covers, and electronic enclosures. The fully threaded design with coarse UNC spacing ensures rapid installation and removal cycles, significantly reducing maintenance downtime. With 70,000 psi tensile strength and corrosion-resistant finish, these thumb screws maintain integrity in manufacturing environments, laboratory equipment, and industrial machinery where frequent component access is required without compromising fastener reliability.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit standards with 8-32 UNC right-hand threads and coarse spacing for reliable engagement. The fastener meets RoHS 3 (2015/863/EU) compliance with exemption 6(a)-I and REACH (EC 1907/2006) standards, ensuring environmental regulatory adherence for industrial applications. The dimensional accuracy includes 1/2" length, 7/16" head diameter, and consistent thread diameter of 0.164" for uniform performance across production runs.
