S-90181A610 5/16"-24 x 1 1/2" Thumb Screws
Thumb Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Material & Strength
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Key Features & Benefits at a Glance
- Easy manual operation with large spade head design requiring no tools for quick installation and adjustments
- Exceptional durability from steel construction with Rockwell B55 hardness resisting wear in demanding environments
- Reliable load-bearing capacity with 40,000 psi tensile strength for secure fastening under mechanical stress
- Precise thread engagement through Class 2A fine UNF threads ensuring consistent fit and vibration resistance
- Full-length threading providing maximum grip and adjustment flexibility across the entire 1-1/2" length
- Standardized compatibility with 5/16"-24 UNF components for seamless integration into existing assemblies
- Right-hand thread direction following conventional installation patterns for intuitive operator use
Professional Applications & Engineering Value
This 5/16"-24 UNF thumb screw delivers critical hand-tightening solutions where tool access is limited or frequent adjustments are required. The steel construction with Rockwell B55 hardness maintains dimensional stability against deformation, while the spade head design provides superior torque application without specialized tools. Engineers specify these fully threaded components for electronic enclosures, machinery access panels, and prototype fixtures where Class 2A fine threads prevent cross-threading in precision assemblies. The 40,000 psi tensile strength ensures reliable performance in vibration-prone environments, making these thumb screws ideal for maintenance-intensive industrial applications.
Specification Summary & Compliance
Manufactured to UNF thread standards with Class 2A thread fit tolerances ensuring precise dimensional accuracy. The 5/16"-24 fine thread configuration maintains consistent pitch control, while the fully threaded 1-1/2" length provides complete fastening coverage. Complies with industry-standard material specifications for steel fasteners and meets general industrial requirements for mechanical components.
