S-90200A632 3/8"-16 x 2 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 grip with knurled head texture for secure tool-free tightening and loosening in confined spaces
- Superior corrosion resistance thanks to black-oxide steel construction, extending service life in industrial environments
- High-strength performance with 70,000 psi tensile strength and Rockwell B84 hardness for demanding applications
- Quick installation enabled by coarse UNC threading and Class 2A fit, reducing assembly time and labor costs
- Full-thread engagement along the 2 1/2" length ensures maximum holding power and vibration resistance
- Low-profile round head design with 0.875" diameter provides ample turning surface while maintaining clearance
- Regulatory compliance with RoHS 3 and REACH standards for safe use in regulated industries
Professional Applications & Engineering Value
This black-oxide steel thumb screw delivers exceptional value in industrial settings where repeated adjustments and reliable fastening are critical. The knurled head provides superior grip even with oily hands or gloves, eliminating the need for tools in maintenance operations and reducing downtime. With its 3/8"-16 UNC coarse threading and Class 2A fit, it offers quick engagement and consistent performance in machinery, enclosures, and fixtures. The combination of 70,000 psi tensile strength and Rockwell B84 hardness ensures durability against stripping and deformation, making it ideal for vibration-prone environments. The fully threaded design along the 2 1/2" length maximizes contact area, providing secure fastening in applications ranging from electrical panels to production equipment.
Specification Summary & Compliance
This thumb screw features precise Class 2A thread fit with 3/8"-16 UNC coarse threads and right-hand threading direction. Manufacturing complies with RoHS 3 (2015/863/EU) with exemption 6(a)-I for lead as an alloying element in steel, and meets REACH (EC 1907/2006) compliance standards. The product maintains dimensional accuracy with 0.875" head diameter, 5/16" head height, and 2 1/2" fully threaded length.
