S-99926A117 8-32 x 1/2" Stainless Steel Hex Drive Flat Head Screws
Stainless Steel Hex Drive Flat Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
- Precise thread engagement with Class 3A fit and UNC coarse threading for reliable, vibration-resistant fastening
- High mechanical strength offering 70,000 psi tensile strength and Rockwell B70 hardness for demanding applications
- Optimal flush mounting featuring a flat undercut head with 100° countersink angle for seamless surface integration
- Efficient installation using a 5/64" hex drive that prevents cam-out and allows high torque application
- Controlled thread engagement through partially threaded design, preventing over-tightening in precision assemblies
- Regulatory compliance meeting RoHS 3 and REACH standards for safe use across various industries
Professional Applications & Engineering Value
These 8-32 UNC flat head screws deliver exceptional performance in precision machinery, electronic enclosures, and industrial equipment where corrosion resistance and reliable fastening are critical. The 18-8 stainless steel material combined with passivated finish provides superior protection against chemical exposure and environmental factors, while the Class 3A thread fit ensures consistent clamping force in vibration-prone applications. The undercut flat head design with 100° countersink angle allows perfect flush mounting in machined surfaces, eliminating protrusions that could interfere with moving components. The hex drive configuration enables secure tool engagement during installation, reducing the risk of stripped drive heads in high-torque assembly scenarios.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 3A thread fit per UNC specifications, ensuring consistent threading performance. The partially threaded design provides controlled engagement length while maintaining full 70,000 psi tensile strength. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for environmental safety and restricted substance control. Thread specifications include 8-32 UNC coarse spacing with right-hand direction, optimized for rapid assembly in industrial fastening applications.
