S-90181A197 8-32 x 3/4" 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
- Tool-free operation with spade head design enables quick manual adjustments without tools, reducing assembly time
- Exceptional durability from Rockwell B55 hardened steel construction resists wear in high-frequency applications
- Reliable load-bearing capacity with 40,000 psi tensile strength ensures secure fastening under mechanical stress
- Precision threading with Class 2A UNC coarse threads provides consistent engagement and vibration resistance
- Full-length threading allows maximum adjustment range and versatile positioning options
- Environmental compliance with RoHS 3 standards ensures safe use in regulated industries
- Optimized grip surface with 15/32" head width delivers superior torque application and user comfort
Professional Applications & Engineering Value
This 8-32 UNC spade thumb screw addresses critical industrial needs for rapid, tool-free fastening solutions where frequent adjustments are required. The steel construction with Rockwell B55 hardness maintains dimensional stability under repeated use, while the coarse thread spacing and Class 2A thread fit prevent cross-threading during quick installations. The spade head profile provides substantial surface area for high-torque manual operation, making it ideal for electronic enclosures, access panels, and prototyping fixtures where tool access is limited. The fully threaded design ensures maximum engagement depth across various material thicknesses, delivering consistent clamping force in maintenance applications and assembly line operations.
Specification Summary & Compliance
Manufactured to precise inch system dimensions with 8-32 UNC coarse threads maintaining Class 2A thread fit tolerances for reliable compatibility. Features 0.164" thread diameter and 3/4" length with fully threaded right-hand orientation. Compliant with RoHS 3 (2015/863/EU) environmental regulations, ensuring restriction-free use in global markets. The steel material meets industrial fastening standards for mechanical applications requiring 40,000 psi tensile strength and consistent performance.
