S-91882A342 8-32 x 7/16" 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 construction, extending service life in demanding environments
- Reliable thread engagement with Class 2A UNC coarse threads ensuring consistent fastening performance
- High mechanical strength with 70,000 psi tensile strength and Rockwell B84 hardness for heavy-duty applications
- Full-threaded design providing maximum holding power across the entire 7/16" length
- Compliant with industry regulations including RoHS 3 and REACH for safe use in regulated industries
- Optimized head geometry with raised profile and 7/16" diameter for comfortable, efficient hand operation
Professional Applications & Engineering Value
This 8-32 UNC thumb screw delivers exceptional engineering value through its black-oxide steel construction and precision Class 2A thread fit. The knurled head texture provides superior grip even with oily hands or gloves, solving the common industrial problem of insufficient torque application in tool-less environments. The coarse UNC threading ensures quick installation and removal while maintaining secure fastening in vibration-prone applications. With fully threaded design and 70,000 psi tensile strength, these thumb screws are engineered for repeated use in industrial equipment, electronic enclosures, machinery access panels, and assembly fixtures where frequent adjustments are required without compromising structural integrity.
Specification Summary & Compliance
This thumb screw features precision 8-32 UNC coarse threads with Class 2A thread fit for consistent dimensional accuracy. The manufacturing complies with RoHS 3 (2015/863/EU) with exemption 6(a)-I for lead as an alloying element in steel and REACH (EC 1907/2006) compliance as of January 17, 2023. The product maintains right-hand thread direction with complete threading along the 7/16" length, supported by collar dimensions of 3/8" diameter and 3/32" height for enhanced stability during operation.
