S-90181A199 8-32 x 1" 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
- Easy hand-tightening operation with spade head design requiring no tools for quick assembly and disassembly
- Superior grip and torque application through ergonomic thumb head measuring 15/32" width and 1/4" height
- Exceptional durability with Rockwell B55 hardness steel construction resisting wear in repeated use cycles
- High load-bearing capacity with 40,000 psi tensile strength for demanding mechanical applications
- Reliable thread engagement through Class 2A thread fit ensuring consistent fastening performance
- Versatile coarse threading with 8-32 UNC specification providing excellent grip in various materials
- Environmental compliance meeting RoHS 3 standards for safe use in regulated industries
Professional Applications & Engineering Value
This 8-32 UNC coarse thread steel thumb screw delivers exceptional engineering value across industrial applications where tool-free access and reliable fastening are critical. The spade head design enables rapid manual installation in confined spaces or applications requiring frequent adjustments, while the fully threaded construction ensures maximum holding power along the entire 1" length. Manufactured from high-strength steel with Rockwell B55 hardness, this thumb screw maintains structural integrity under vibration and repeated cycling, making it ideal for industrial equipment panels, electronic enclosures, machinery guards, and prototype assemblies. The right-hand thread direction and coarse thread spacing provide quick installation and superior resistance to loosening in demanding environments.
Specification Summary & Compliance
This thumb screw features precision 8-32 UNC coarse threads with Class 2A thread fit ensuring consistent dimensional accuracy and reliable performance. The fastener maintains 0.164" thread diameter and is fully threaded along its 1" length for maximum engagement. Manufacturing compliance includes adherence to RoHS 3 (2015/863/EU) standards for environmental safety, making it suitable for use in regulated industries and applications requiring hazardous substance restriction compliance.
