S-91882A378 10-32 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
- Superior hand-tightening capability with knurled round head design for enhanced grip and torque application without tools
- Exceptional corrosion resistance thanks to black-oxide steel construction, ideal for industrial environments
- High-strength performance with 70,000 psi tensile strength and Rockwell B84 hardness for reliable load-bearing applications
- Precision threading consistency with Class 2A fit and UNF fine thread profile ensuring secure, vibration-resistant fastening
- Full-thread engagement along the 7/16" length provides maximum holding power and alignment stability
- Compliant with industry regulations including RoHS 3 and REACH for safe use in regulated applications
- Optimized head geometry with 1/2" diameter and raised profile for comfortable, efficient manual operation
Professional Applications & Engineering Value
This black-oxide steel thumb screw delivers exceptional engineering value in applications requiring frequent adjustments or tool-less maintenance. The knurled round head with raised profile provides superior tactile grip, eliminating slippage during hand-tightening in confined spaces or when gloves are worn. Engineered with 10-32 UNF fine threading and Class 2A fit, it maintains precise alignment in machinery, electronic enclosures, and instrumentation panels where vibration resistance is critical. The fully threaded design ensures consistent clamping force across the entire 7/16" length, while the black-oxide finish offers reliable protection in industrial environments. These thumb screws are particularly valuable in assembly lines, maintenance operations, and equipment requiring regular access, reducing installation time and eliminating tool dependency.
Specification Summary & Compliance
This fastener features precision 10-32 UNF threads with Class 2A fit tolerance ensuring consistent engagement and reliable performance. The right-hand thread direction follows standard installation practices. 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 black-oxide steel construction meets industrial standards for corrosion resistance and durability.
