S-99607A255 5/16"-24 x 1 1/4" 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
- Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
- Enhanced manual tightening and loosening through the knurled round head with flared collar design
- High load-bearing capacity with 80,000 psi tensile strength and Rockwell B85 hardness for reliable performance
- Precise thread engagement with Class 2A fit and fine UNF threads, ensuring secure connections
- Full-length threading for maximum adjustability and holding power across the entire 1-1/4" length
- Compliance with environmental regulations including RoHS 3 and REACH, meeting global standards
- Right-hand thread direction for standard installation familiarity and efficiency
Professional Applications & Engineering Value
This 18-8 stainless steel thumb screw delivers exceptional value in applications requiring frequent adjustments or tool-free operation. The knurled head texture and flared collar provide a secure grip even with gloved hands, reducing installation time and preventing slippage. Its fully threaded 5/16"-24 UNF fine thread design ensures consistent clamping force across panels, access doors, and machinery guards. The high tensile strength and corrosion-resistant properties make it suitable for industrial equipment, electronic enclosures, and automotive assemblies where durability and regulatory compliance are critical. Engineered to withstand vibration and environmental exposure, this thumb screw eliminates the need for specialized tools while maintaining reliable fastening performance in demanding conditions.
Specification Summary & Compliance
This thumb screw features Class 2A thread fit per UNF standards with precise 5/16"-24 fine threading and right-hand direction. Manufacturing adheres to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety. Dimensions include 1-1/4" length, 41/64" head diameter, and 1/2" collar diameter, providing consistent performance across industrial applications.
