S-97424A740 1/4"-80 x 3" 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
- Superior grip and torque application with knurled black acetal plastic head for slip-resistant manual operation in tight spaces
- Precise thread engagement and fine adjustment capability through 1/4"-80 ultra fine Class 3A thread for critical alignment applications
- Enhanced component protection and secure fastening with ball tip design that minimizes surface damage during installation
- Excellent corrosion resistance and durability from 18-8 stainless steel construction with 60,000 psi tensile strength
- Reliable performance in moderate temperature environments with acetal plastic head rated to 180°F maximum operating temperature
- Full regulatory compliance for global markets meeting RoHS 3 and REACH environmental standards
- Optimized for repeated manual operation featuring right-hand thread direction and fully threaded 3" length for consistent performance
Professional Applications & Engineering Value
This precision thumb screw delivers exceptional value in applications requiring fine thread control and frequent adjustments. The 18-8 stainless steel construction provides corrosion resistance essential for electronics, optical equipment, and laboratory instruments where environmental factors threaten component integrity. The ultra fine 1/4"-80 thread (Class 3A fit) enables microscopic adjustments in positioning systems, while the ball tip prevents marring of sensitive surfaces in calibration equipment and precision machinery. The knurled acetal plastic head offers superior tactile grip for tool-free operation in confined spaces, making it ideal for field service applications and maintenance scenarios where quick adjustments are necessary without compromising tensile strength or thread integrity.
Specification Summary & Compliance
This thumb screw features 1/4"-80 UNS ultra fine threads with Class 3A thread fit for precision applications, manufactured from 18-8 stainless steel with a black acetal plastic knurled head. The 3" length is fully threaded with right-hand direction and ball tip design. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and global market acceptance.
