S-91882A349 8-32 x 9/16" 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 grip and torque application with knurled round head design for secure manual tightening without tools
- Superior corrosion resistance from black-oxide steel finish, extending service life in demanding environments
- High mechanical strength with 70,000 psi tensile strength and Rockwell B84 hardness for reliable load-bearing performance
- Quick installation and removal thanks to coarse UNC threading and Class 2A fit for smooth engagement
- Full-threaded design ensures maximum holding power across the entire 9/16" length
- Raised head profile provides improved clearance and comfortable finger grip during operation
- Regulatory compliance meets RoHS 3 and REACH standards for safe use in regulated industries
Professional Applications & Engineering Value
This 8-32 UNC thumb screw delivers exceptional value in applications requiring frequent adjustments or tool-free maintenance. The black-oxide steel construction provides excellent corrosion protection while maintaining the 70,000 psi tensile strength needed for heavy-duty fastening. The knurled round head with raised profile ensures positive grip even with oily hands or gloves, solving slippage issues in high-vibration environments. Coarse thread spacing and Class 2A thread fit enable rapid installation in machinery, electronic enclosures, and industrial equipment where quick access panels need secure yet removable fastening solutions. The fully threaded design distributes clamping force evenly, preventing loosening under dynamic loads.
Specification Summary & Compliance
This thumb screw features precision 8-32 UNC coarse threads with Class 2A tolerance for consistent fit and reliable performance. Manufacturing complies with RoHS 3 (2015/863/EU) with exemption 6(a)-I and REACH (EC 1907/2006) standards, ensuring environmental responsibility. The fastener maintains dimensional accuracy with 9/16" length, 7/16" head diameter, and 3/8" collar diameter for standardized installation across industrial applications.
